Drivetrain Components

Shimano Ultegra ST-R8070 Di2 hydraulic disc brake dual control levers. - Intuitive shifting operation - Updated features and more defined click feeling - Clearer separation between shift buttons support quick and precise shifting while operating with thick gloves - Customizable functionality to match the rider's style - Each switch has the option for multi-shift ON or OFF - E-TUBE PROJECT - Programmable function of ST top button remote switch for third party cycle computer and shifting - Greater rider control in all conditions - Hydraulic disc brake provides the next stage of control - Small bracket size improves ergonomics - Customize each SW for multi-shift on or off per SW through E-tube project App. - Greater reach adjust range and free stroke adjuster - Lightweight race-ready materials - More quick and precise shifting while operating with thick gloves - 2x11-speed - Average Weight: 180 grams

- Quick And Intuitive Rear Shifting Operation - Shorter Lever Stroke - Redesigned Internal Shifting Unit - Lighter Front Shifting Operation - Redesign Front System With New Front Derailleur - Comfortable Grip And Operation - More Customizable And Precise Lever Position - Expanded Reach Adjustment Range (14 Mm) Mechanical Brake - Consistent Braking Performance In Any Condition

The FSA SL-K carbon tandem cranks feature an asymmetrical modular compact 2 x 11-speed spider, 30mm spindle, and tons of adjustability. - Hollow carbon arms with UD carbon finish - Asymmetrical 110 A.B.S BCD achieves 4 chainlines (44,47,50,53) - English BB included - 104 BCD timing spider - 653 grams - Number of Chainrings: Single - Crank Intended Use: Tandem - Pedal Spindle: 9/16" - Rings: 38 - Spindle Interface Type: 392 EVO - BB Included: English

The Campagnolo Chorus Ergopower Brake/Shift system features improved ergonomics that can be tailored to the rider's individual preferences. - Ultra-Shift function allows for multiple shifts in one motion and greater control for racing - Aluminum braking lever features reach adjustment mechanism - Technopolymer Ergopower body Specifications: - Rotor Included: No - Pad Compound: Semi-Metallic - Brake Caliper Mount: Flat Mount - Brake Lever Use: Right - Hydraulic Fluid Type: Mineral Oil - Rear Der/Shifter Compatibility: Campy 12-Speed Chorus/Record/Super Record 2019+ - Drivetrain Speeds: 12 - Adjustable Reach: Yes

Dominate your bike at every turn, relax on the long straights, and prepare for the final sprint: whatever your racing position, Ergopower controls, with the exclusive Campagnolo mechanism allows you to shift up 3 sprockets at a time and down 5 sprockets. Make every movement natural, fast and precise. The Super Record series Ergopower Ultra-Shift controls are the top product in terms of technology applied to ergonomics, safety, speed, and precision shifting. Your every wish is a command. - Composite body, carbon-inlay shift lever and carbon fiber brake lever - Ball bearing shift mechanism combined with titanium internals - Ergonomic hood design follows the asymmetry of the hand, increasing the contact area of the palm and offering multiple riding positions - Two clicks downshift into the small chain ring, while a third shift is used for trim - Hypoallergenic silicone with multiple densities is used as hood material offering greater softness in the palm area and greater rigidity in the gripping area - No-Bulge technology smoothes the cable passage as the housing exits the controls - Campagnolo 2015+ 11-speed specific, not compatible with previous versions of Campagnolo 9/10/11 speed, Shimano or SRAM derailleurs - Speed: 2 x 11-speed - Front/Rear: set - Adjustable Reach: Yes - Ultra-Shift cables and housing included - Weight: 339g

If you believe in better performance then you should believe in hydraulic road (HydroR) brakes. SRAM's award winning HydroR technology is the fulfillment of the promise of better braking, more control, and improved performance in all conditions. SRAM RED is delivering on the promise of braking confidence and security that brings speed control and stability to a new level. - RED ergonomics including Reach Adjust - SRAM Road 11-speed compatible - Optimized power and modulation for higher speeds and more control - Refined lever body design is more comfortable - Easy access bleed port means convenient service - Shift paddle design is lightweight and offers improved finger clearance - Moto-style means this is a right-side (rear) shifter with a front brake, the reverse of the normal American-style. - Front brake hose length is 950mm, rear brake hose length is 1800mm

When you're racing against the clock, there's no room for mistakes, so Campagnolo's Record EPS TT Shift/Brake Levers ensure a perfect shift every time. In addition, flawless braking is always at hand thanks to the contoured, ergonomic carbon levers. And with easy-to-access buttons and the power of electronic shifting, you can switch gears even while braking.

The new X01 Eagle is our best, toughest, and most aggressive Trail and Enduro crankset thanks to DUB technology. The reengineered design, employing our proprietary CARBON TUNED lay-up technology, is built tough to handle aggressive lines through rock gardens and big hits wherever you find them. - DUB technology delivers the strongest, stiffest, lightest crankset available - All-new SRAM CARBON TUNED crank technology provides extreme stiffness and low weight - All-new chainring technology is designed specifically for Eagle chains and drivetrains - The X-SYNC2 chainring provides significantly quieter performance, with better mud clearing and extraordinary durability

Performance Creativity For the aficionados and the geeks and the fanboys and the freaks, a custom-painted crank is a place of pride. A painted hammer. A beautiful ax. Troy Lee and his team channeled the future of camo to design these cranks, and the future in the stiff, durable world of SRAM cranks is looking exceptionally bright. Specifications: - Speeds: 11/12 - BB Compatibility: DUB:BSA73, PF89.5, PF92, PF30 MTB73, BB30 MTB73, BSA MTB68SP - Chainring Size: 32 - Crank Arm Length: 165mm, 170mm, 175mm - Chainline: 52.0mm - BB Spindle Interface: DUB - Chainring Material: Aluminum - Guard: No Guard - Bolt Circle Diameter (BCD: Direct Mount (DM) - Crank Arm Material: Carbon

The XG-1299 cassette completes the expression of the world's most accomplished and sought after bikes. Designed for use with our proven, reliable XD driver body, this 12-speed cassette offers a massive gear range. In independent tests, the X-Dome architecture is proven to yield the strongest cassette on the market. New shifting characteristics improve both inboard and outboard shifting as well as chain retention. - SRAM’s cassette manufacturing technology provides the greatest durability and lightest weight - All-new shifting features create a smoother, quieter system with enhanced inboard and outboard shift performance - XD driver body compatible Cogs - 10 – 50T: 10, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 50 - 10 – 52T: 10, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 52

The X-DOME Eagle cassette has no peer. It buried the last dangling shred of an argument in favor of a mountain bike front derailleur. And now, it's 10-50 tooth gear range has open the door for an entire ecosystem of Eagle groupsets. Designed for use with our proven, reliable XD driver body, this 12-speed, cassette offers an optimal 500-percent gear range. In independent tests the X-Dome architecture is proven to yield the strongest cassette on the market. New shifting characteristics improve both inboard and outboard shifting, as well as chain retention. This cassette matches up perfectly in performance and color to XX1 Eagle AXS enabled componentry. - New copper colorway is perfectly matched to work with XX1 Eagle AXS - SRAM's cassette manufacturing technology provides the greatest durability and lightest weight - All-new shifting features create a smoother, quieter system with enhanced inboard and outboard shift performance - XD driver body compatible

Ride with confidence knowing that your power meter will not quit when you need it the most. Enjoy up to 200 hours of ride time in any weather condition with its IPX7 waterproof rating and 10k temperature compensation; if harsh climates do not hold you back, then you need a product capable of rising to the occasion. That is exactly what the DZero DUB power meter is made for. Train harder, ride faster and unlock your ultimate potential.  - Specifically designed for use with XX SL Eagle T-Type Thread Mount chainrings (Sold separately) - AXS™™ enabled for easy monitoring and firmware upgrades - Bluetooth Low Energy and ANT+ compatible - Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride - Uses a common CR2032 battery that last for 200 riding hours and changes without tools - Power-upgrade compatible with the following RED® and Force eTap AXS™™ cranksets: RED 1x: 36T-46T, Force 1x: 36T-46T, Force 2x: 33/46, 35/48

The SRAM RED shift-brake controls feature a fresh new look and continue our philosophy of perfecting the interface between rider and bike. We have scrutinized everything, including the transition between handlebar and hoods, the grip texture, finger wrap, and the separate interfaces with both the shifter and brake lever. The result is an extremely comfortable, highly individual fit that makes the shift-brake controls feel like a natural extension of the rider. - SRAM Road 11-speed compatible - New clamp allows better fit and adjustment for modern carbon and ergo bars - Designed for Yaw front derailleurs - ErgoFit textured body improves grip and finger wrap with reduced diameter, providing better control and a better transition to the bar - Individual Reach Adjust of brake and shift lever is easy to access and uses a standard hex key, putting the controls exactly where you want them - Larger carbon ErgoBlade lever improves shifting from the drops - DoubleTap technology delivers both shifts from a single lever - ZeroLoss shifting means shifts engage immediately - Compatible with cable brakes

The Super Record 12-Speed rear derailleur combines the highest quality materials for exceptional weight and unparalleled performance. The unidirectional carbon fiber front rocker arm reduces weight, with an innovative shape that envelopes the cassette better, thanks to 3D Embrace technology, creating a double effect: allowing the chain to maintain optimum traction at all times, thus increasing the speed, power and precision of shifting. - Carbon fiber-reinforced construction, to increase strength while keeping weight to a minimum - Optimized spring return for constant chain tension - Adjustment of the initial rear derailleur position - Removable pivot on the upper body - Optimized to work with cassettes from 11 to 34 teeth Specifications: - Largest Cog: 34 - Rear Derailleur Mount Type: 10x1 Standard - Chain Wrap Capacity (teeth): 37 - Cage Length: Medium - Rear Der/Shifter Compatibility: Campy 12-Speed Chorus/Record/Super Record 2019+ - Drivetrain Speeds: 12

- BCD: Direct Mount Shimano - Chainline: 55mm - Crank Arm Length: 170mm - Material: Aluminum - Interface: Hollowtech II - Speed: 11/12 - Crank Spindle Diameter: 24mm - Drivetrain Spacing: SuperBoost+ - Pedals Thread: 9/16''

Award-winning eTap shift logic, now with the connectivity of AXS. The SRAM RED eTap shift-brake levers build on this foundation while integrating our newest technologies. And, it offers many personalizations, from shifting sequence to brake lever reach. - AXS enabled for easy personalization - Simple and intuitive eTap shift logic - Customizable fit with Reach Adjust - Two ports for Blips on each lever - Large SRAM eTap paddles provide positive controls for rider input - For use with mechanical rim brakes

SRAM's E-BLOCK shifting technology is a fundamental redevelopment of external drivetrain shifting. On the E-BLOCK cassette, the chain has a defined link position on each cog. Cog architecture has been engineered to work with both inner and outer links of the chain, which allows extremely refined shifting for both inboard and outboard shifts. The result is precise and robust shifting performance in any situation, even with full motor support. - 11 – 48T, 8-speed cassette machined from case-hardened tool steel - Ideal mid-ship motor gear range - Increased chain wrap on climbing cogs - Symmetric shifting geometry allows fast, precise gear shifts - Optimal inboard and outboard shifting performance - The big steps between cassette cogs is a completely new cassette technology engineered specifically for the demands of E-MTB - Non XD driver body compatible - Gear Ratio: 11 – 48T - Recommended Group: EX1 - Cogs: 11, 13, 15, 18, 24, 32, 40, 48

The new SRAM DUB crank standard, built on a 28.99mm spindle, allows for a more contamination-resistant BB design while retaining the ultra-efficient & long-lasting qualities CeramicSpeed Bottom Brackets are known for. With an integrated dust cover for all models, the snug & secure fit not only fully protects the face of the bearing, but also delivers exceptional performance without any sacrifices. CeramicSpeed hand-built bearings carry the load from crank to frame with unparalleled durability & efficiency. The SRAM DUB crank spindle requires the bearing contact points to be in a set and designated width and all CeramicSpeed bottom Bracket options perfectly match the bearing placement on the crank spindle with the required frame interface for nearly any model of bike. Without the use of unnecessary adapters or spacers, a quiet & stable platform is ensured throughout the life of the product. The BB30 for SRAM DUB Road comes in two versions; one using our CeramicSpeed Standard Bearings and the other using our Coated Bearings for even longer lifetime and lower friction. Compatible with: - Frame: BB30 - Opening diameter: 42mm - Shell width: 68mm - Bottom Bracket Tool for installation: BBT-79 In the box: - 2 cups with CeramicSpeed Bearings installed - 2 dust covers - 4 x 1mm spacers - 10ml syringe of CeramicSpeed All Round Grease - Sticker Sheet

The BB30 standard opened up design possibilities for frames. Adapting it for Shimano cranks takes a special machined aluminum threaded bottom bracket that threads into itself. Ours are finished with CeramicSpeed Bearings. You have two choices in terms of bearings. The first choice is our low drag, long life standard bearing with hardened-steel races and our super-round CeramicSpeed Balls. The second choice is our coated bearing, which uses those same balls installed on coated, hardened-steel races for longer life and less bearing drag. This bottom bracket works with cranks that have 24mm spindles. Bottom brackets have several variables, but within that, CeramicSpeed standard Bearings typically have frictional drag of 0.3-0.4 watts per set. That's in the range of a 75% drag reduction compared to standard bottom brackets. That's thanks to balls that are 100% smoother and 15% harder than the ceramic competition. The CeramicSpeed Bearings last at least three times longer than other bearings. Coated Bearings see another big bump in performance. The coated races see a 50% drag reduction and an improvement in bearing life of 60%. Performance can be tuned by changing the grease. All Round Grease comes installed, but can be changed for lower drag TT and Track Grease, or higher durability LongLife Grease, which adds a bit of drag but stays in the bearing when riding through messy conditions. In The Box: - 1 bottom bracket with bearings installed - 2 dust covers installed - 10ml syringe of CeramicSpeed All Round Grease - Sticker sheet

The new SRAM DUB crank standard, built on a 28.99mm spindle, allows for a more contamination-resistant BB design while retaining the ultra-efficient & long-lasting qualities CeramicSpeed Bottom Brackets are known for. With an integrated dust cover for all models, the snug & secure fit not only fully protects the face of the bearing, but also delivers exceptional performance without any sacrifices. CeramicSpeed hand-built bearings carry the load from crank to frame with unparalleled durability & efficiency. The SRAM DUB crank spindle requires the bearing contact points to be in a set and designated width, and all CeramicSpeed Bottom Bracket options perfectly match the bearing placement on the crank spindle with the required frame interface for nearly any model of bike. Without the use of unnecessary adapters or spacers, a quiet & stable platform is ensured throughout the life of the product. You have two bearing choices. The first choice is our low drag, long life Standard Bearing with hardened-steel races and our super-round CeramicSpeed balls. The second choice is our Coated Bearing, which uses those same balls installed on coated, hardened-steel races for longer life and less bearing drag. Compatible with: - Frame: BB86 - Opening diameter: 41mm - Shell width: 86.5mm In the box: - 2 CeramicSpeed Bearings - 2x dust covers - Plast-sheet - 4 x 1mm spacers - 10ml syringe of CeramicSpeed All Round Grease - Sticker Sheet

Shimano cranks fit into BB86 frames when you have this CeramicSpeed Bottom Bracket installed. The kit consists of two cups that are pressed into either side of the central opening. The cups come with CeramicSpeed Bearings installed. There are two versions. The first is our low drag, long life Standard Bearing with hardened-steel races and our super-round CeramicSpeed Balls. The second version is our coated bearing, which uses those same CeramicSpeed Balls installed on coated, hardened-steel races for longer life and less bearing drag. This CeramicSpeed BB86 Bottom Bracket works with cranks that have 24mm spindles, including both Shimano and FSA. CeramicSpeed standard Bearings typically have frictional drag of 0.3-0.4 watts per set. That represents an average 75% drag reduction compared to standard bottom brackets. The hardened-steel races feature the CeramicSpeed Balls that are 100% smoother and 15% harder than the ceramic competition. The CeramicSpeed Bearings last at least three times longer than other bearings. Coated Bearings drop friction further and increase lifespan. The coated races see a 50% drag reduction and an improvement in bearing life of 60%. In The Box: - 2 bottom bracket cups with bearings installed - 2 dust covers with integrated spacers installed - Spacer tube - 10ml syringe of All Round Grease - Sticker sheet

These bottom brackets are equipped with hand-built coated bearings specially developed for off-road performance that offer extreme durability and feature a unique design for SRAM DUB 28.99mm cranks. Coated bearings utilize the highest-quality CeramicSpeed ceramic balls, running on hardened-steel races with a 3-micron-thick metallic coating that makes the races corrosion-resistant, harder, and smoother, increasing service life and reducing friction. - This product has a unique design specifically for SRAM DUB 28.99mm cranks - Native fit frame interface and no plastic adapters or excess spacers - This design features a custom integrated dust cover for maximum durability In the box: - 2 CeramicSpeed Bearings - 2 dust covers - Plast sheet - 1 x 3mm spacer - 2 x 1mm spacers - 10ml syringe of CeramicSpeed Long Life Grease - Sticker sheet

The BB86 mountain bike standard was designed to integrate bearings into the bottom bracket for weight reduction. This kit works with the standard: it consists of two cups that are pressed into either side of the shell. There are two versions of this bottom bracket. Both come with CeramicSpeed Bearings installed into cups. The first is our long-life, low-drag Standard Bearing with hardened-steel races and our CeramicSpeed super-round, super hard balls. The second is our Coated bearing, which uses those same CeramicSpeed Balls installed on coated, hardened-steel races for longer life and less bearing drag. This CeramicSpeed BB86 Bottom Bracket meshes with cranks that have 24mm spindles, including both Shimano and FSA. CeramicSpeed standard Bearings typically have frictional drag of 0.3-0.4 watts per set. That means an average 75% drag reduction compared to standard bottom brackets. The hardened-steel races feature CeramicSpeed Balls that are 100% smoother and 15% harder than the ceramic competition. The CeramicSpeed Bearings last at least three times longer than other bearings. Coated Bearings drop friction further and increase lifespan to applying a coating to the races. The coated races see a 50% drag reduction and an improvement in bearing life of 60%. In The Box - 2 bottom bracket cups with bearings installed - 2 dust covers with integrated spacers installed - Spacer tube - 10ml syringe of LongLife Grease - Sticker sheet

BBright is the Cervelo bottom bracket standard found on most of their frames, save the P5. In order to fit Shimano and FSA cranks into this oversized shell, this bottom bracket, complete with CeramicSpeed Bearings, needs to be pressed in. The BBright bottom bracket comes with either CeramicSpeed Standard or Coated Bearings installed. Super smooth, super-round CeramicSpeed Balls contained in hardened-steel races are found on both versions. The Coated version has a metallic coating laid onto the races, making it even smoother and harder, resulting in lower drag and longer life. BBright is similar to BB30, but is wider on the non-drive side. As such, the bottom bracket for running 24mm diameter cranks from Shimano, FSA, and others, is unique. The CeramicSpeed Standard Bearings last at least three times longer than other bearings. Thanks goes to hardened-steel races and CeramicSpeed Balls that are 100% smoother and 15% harder than the ceramic competition. These have a frictional drag of 0.3-0.4 watts per set, which represents an average 75% drag reduction compared to most BBs. The CeramicSpeed Coated Bearings reduce drag by 50% compared to CeramicSpeed Standard Bearings, and show an improvement in bearing life by 60%. In The Box - 1 bottom bracket with bearings installed - 2 dust covers - 10ml syringe of All Round Grease - Sticker sheet

These hand-built bearings are specially developed for off-road performance. The bearings offer extreme durability and high performance efficiency and are developed specifically for DUB 28.99mm cranks. These bottom brackets are equipped with coated bearings. The coated bearings utilize the highest quality CeramicSpeed ceramic balls, running on hardened-steel races with a 3-micron-thick metallic coating, making the races corrosion-resistant, harder and smoother, increasing service life, and reducing friction. - This product has a unique design specifically for SRAM DUB 28.99mm cranks - Native fit frame interface and no plastic adapters or excess spacers - This design features a custom integrated dustcover for maximum durability In the box: - 2 cups with CeramicSpeed Bearings installed - 2 dust covers - 1 x 3mm spacer - 2 x 1mm spacers - 10ml syringe of CeramicSpeed Long Life Grease - Sticker sheet

The new SRAM DUB crank standard, built on a 28.99mm spindle, allows for a more contamination-resistant BB design, while retaining the ultra-efficient & long-lasting qualities CeramicSpeed Bottom Brackets are known for. With an integrated dust cover for all models, the snug & secure fit not only fully protects the face of the bearing, but also delivers exceptional performance without any sacrifices. CeramicSpeed hand-built bearings carry the load from crank to frame with unparalleled durability & efficiency. The SRAM DUB crank spindle requires the bearing contact points to be in a set and designated width, and all CeramicSpeed Bottom Bracket options perfectly match the bearing placement on the crank spindle with the required frame interface for nearly any model of bike. Without the use of unnecessary adapters or spacers, a quiet & stable platform is ensured throughout the life of the product. The BSA for SRAM DUB Road comes in two versions. The first is our low drag, long life Standard Bearing with hardened-steel races and our super-round CeramicSpeed balls. The second is our Coated Bearing, which uses those same balls installed on coated, hardened-steel races for longer life and less bearing drag. Compatible with: - Frame: BSA - Opening diameter: Threaded - Shell width: 68mm In the box: - 2 cups with CeramicSpeed Bearings installed - 2 dust covers - 4 x 1mm spacers - 10ml syringe of CeramicSpeed All Round Grease - Sticker sheet - Spacertube

BSA is equivalent to English threading. English threading on MTBs mean a 73mm-wide, 34mm-inside-diameter shell with reverse threading on the drive side. It's the most common threaded standard employed today. This kit works with 24mm diameter cranks, such as Shimano, FSA, Rotor, and others. Choose between two bearing types for the cups. Standard Bearings have low drag thanks to hardened-steel races and our Ceramic balls. Coated Bearings have those same balls installed on coated, hardened-steel races for longer life and less bearing drag. For MTBs, English threading, thanks to history, is pretty much the one threaded standard. It works great. 24mm spindles easily fit through the shell, allow for large bearings to be employed in the outside cups. What's more, they rarely creak and seal up well. Lots of things slow bikes down; bearings shouldn't be among them. CeramicSpeed Standard Bearings typically have frictional drag of 0.3-0.4 watts per set. That's in the range of a 75% drag reduction compared to standard bottom brackets. The bearings last at least 3x longer than other bearings. Coated bearings have even less drag. These bearings come packed with LongLife Grease, best for muddy conditions. For less drag when riding in cleaner environs, you can coat the bearings with either All Round Grease or lowest drag TT and Track Grease, which is designed for clean conditions. In The Box - 2 threaded cups with bearings - 2 dust covers with built-in spacers - Spacer tube - 10ml syringe of LongLife grease - Sticker sheet

BSA is equivalent to English threading. English threading on road bikes mean a 68mm-wide, 34mm inside diameter shell with reverse threading on the drive side. It's the most common threaded standard employed today. This kit works with 24mm diameter cranks, such as Shimano, FSA, Rotor, and others. Choose between two bearings for the cups. Standard Bearings have low drag thanks to hardened-steel races and our Ceramic balls. Coated Bearings have those same balls installed on coated, hardened-steel races for longer life and less bearing drag. English threading is easy to work with, and 24mm spindles easily fit through the shell, allowing for large bearings to be employed in the outside cups. Put more of your energy into forward motion by reducing frictional drag wherever you can. CeramicSpeed Standard Bearings typically have frictional drag of 0.3-0.4 watts per set. That's in the range of a 75% drag reduction compared to standard bottom brackets. CeramicSpeed balls are 100% smoother and 15% harder than ceramic competition. The bearings last at least 3x longer than other bearings. In The Box: - 2 threaded cups with bearings - 2 dust covers with built-in spacers - Spacer tube - 10mm syringe of All Round Grease - Sticker sheet

BSA is another way of stating English threading. The initialization comes from Birmingham Small Arms, which made bicycles. English threading on road bikes mean a 68mm-wide, 34mm-inside-diameter shell with reverse threading on the drive side. It's the most common threaded standard employed today. This kit allows you to fit 30mm cranks, like those from Rotor, to fit in the tight space of this 34mm spindle. Choose between two bearings types for the cups. Standard Bearings have low drag thanks to hardened-steel races and our CeramicSpeed Balls. Coated Bearings have those same balls installed on coated, hardened-steel races for longer life and less bearing drag. Note that the threaded extensions of this BB's cups that thread into the frame are thin, as they need to fit a 30mm spindle inside the cups. CeramicSpeed standard bearings typically have frictional drag of 0.3-0.4 watts per set. That's in the range of a 75% drag reduction compared to standard bottom brackets. That's thanks to balls that are 100% smoother and 15% harder than the ceramic competition. The bearings last at least 3x longer than other bearings. In The Box: - 2 threaded cups with bearings installed - 2 1mm spacers - 2 0.5mm spacers - 2 dust covers - O-ring - 10ml syringe All Round Grease - Sticker sheet - Spacertube

BSA comes from Birmingham Small Arms, aka English threading. English threading on mountain bikes means a 73mm-wide, 34mm-inside-diameter shell with reverse threading on the drive side. It's the most common threaded standard employed today. This kit allows you to fit 30mm cranks, like those from Rotor or RaceFace, to fit in the tight space of this 30mm spindle. CeramicSpeed Coated Bearings are hand-built with unique CeramicSpeed Ceramic Balls installed on coated, hardened-steel races for longer life and less bearing drag compared to standard bearings. In The Box - 2 threaded cups with bearings installed - 2 1mm spacers - 2 0.5mm spacers - 2 dust covers - O-ring - 10ml syringe All Round Grease - Sticker sheet