Box Two Prime 9 Speed MTB GroupsetReady for fast and fun MTB adventures, this groupset offers incredibly smooth gearing and precise operation on your mountain bike. It delivers similar performance to the top-tier Box One without the costly features. You still get the Tri-Pack (TM) Clutch in the rear mech only it isn't adjustable. The cassette's 11-50T range is equally impressive and the action on the shifter is just as snappy although you don't get the rigid die-cast pull lever. Completing this groupset is its high-quality chain, which boasts impressive torque power and speed as you explore the trails on your mountain bike.Box Two Prime 9 ShifterThe Box Two shifter is the only shifter on the market (other than our Box One) that comes factory stock with a hinged clamp. Box Two is our performance tier so this shifter still maintains the durable cast aluminium top shell but trades out the Box One's 1-piece pull-lever for a 2-piece resin and steel variant. All Prime 9 shifters take advantage of the 9-speed's inherent durability, simplicity, and reliability. Not only is the shifter mechanism joyfully simplified, but fewer shifts are needed for every mile of travel. And the best part is? Prime 9 is also terribly forgiving so you won't have to constantly adjust your set-up.Features: Material: Glass Fibre / Nylon Composite, Steel, Aluminum Alloy with Matte Onyx finish Hinged and Extruded Clamp 2 pc Pull Lever / Up to 3 Gears Per Shift* ( two options available to select) Die Cast Top Shell Fast Action Release Lever Prime 9 Technology Multi Shift Option Not Intended for E-Bike Use Single Shift Option Recommended for E-Bike Use Weight 135gBox Two Prime 9 X-Wide Rear DerailleurThe Box Two Prime 9 Rear Derailleur is very similar to the Box One version however, to be more wallet-friendly, it offers a non-adjustable Tri-Pack Clutch, bushing pulleys, and some muted finishes. Box Two rear derailleurs are still optimized for 11-50t cassettes and offer durability and performance for the most demanding terrain, just at a lower price!Features: Material: Stainless Steel, Hardened Alloy Steel with Matte Onyx finish Tri-Pack Limited Slip Clutch Sealed Bushings Pulleys Nylon Composite Knuckle Pivot-Tech Cable Stay Durable 3D Forged Linkages Forged Inner and Outer Cage Prime 9 Technology Compatible with Standard Derailleur Hangers (Non Direct-Mount) Weight: 290gBox Two Prime 9 11-50T CassetteThe Box Two cassette was where Prime 9 started. Originally conceived as an E-MTB product to deliver long service life and extra range over fewer gears, we quickly grew to enjoy its abilities on unpowered MTBs. All cogs are stamped from steel and subsequently, the larger ones are pinned to alloy spiders. Due to its provenance, this is, without doubt, the most durable cassette in the range.Features: Material: Hardened Alloy Steel, Aluminium Cogs Pinned to Lightweight Spiders Ultra-Wide Ratio with Consistent Progression Prime 9 Technology Our Most Durable Cassette Compatible with HG Freehub Bodies Not Intended for E-Bike Use Weight: 645gBox Two Prime 9 126 Link Chain NickelThe Box Two chain's nickel plating adds both corrosion and wear-resistance. All Prime 9 chains have chamfered shifting edges, solid plates and solid pins to safeguard durability. Our unique inner link spacing is engineered to grab those modern wide/narrow chainrings. We chose to modernize the 9-speed platform due to the chain's spirited reputation.Features: Material: Hardened Alloy Steel with Nickel finish Our Most Durable Chain Nickel Plated Protection Durable Hardened Solid Pins Wide/Narrow Chainring Compatible Prime 9 Technology Weight: 350gFAQSHIFTERDoes the Box Two Prime 9 Shifter come with a cable? Yes. All Box Two Twin Lever Shifters come with a stainless steel shift cable.How do I remove the cap from the cable port to install a new cable? To remove it, use a Phillips head screwdriver and turn it counter-clockwise a quarter turn You can then push the cap out by applying pressure to the cable from the other side. Please Note: The Cable Port is not a screw that un-threads from the cable port, if you turn the cable port screw more than 90 degrees damage may occur.Is the Box Two Prime 9 Shifter compatible with other 9 speed derailleurs? No, traditional 9 speed systems use a Cable Pull that is not compatible with prime 9.DERAILLEURAre Box Prime 9 derailleurs compatible with Shimano "direct mount" hangers? No, Shimano direct mount hangers are proprietary and are not compatible with Box derailleurs.Is the Box Two Prime 9 Derailleur compatible with other 9 speed components? No, traditional 9 speed systems use a Cable Pull that is not compatible with Prime 9.Are Box Prime 9 derailleurs compatible with drop bar (road) shifters? No, Box Prime 9 derailleurs are not currently compatible with drop bar shifters, but we do offer a clamp for our shifters to mount on some 31.8mm drop handle bars.How should I clean my Box Two Prime 9 derailleur? We suggest removing the derailleur from the bike and using a soft bristle brush or rag with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.CASSETTEWill the Box Two Prime 9 Cassette fit on a wheel with a SRAM XD Driver? No this will only work with a HG splined Shimano 9-10-11 speed freehub body.Is the Box Two Prime 9 Cassette compatible with other 9 speed drivetrains? No, The Box Two Prime 9 Cassette is optimized for Box Prime 9 drivetrains and running other component variations can result in poor performance.How should I clean my Box Two Prime 9 Cassette? We suggest removing the cassette from the wheel and using a soft bristle brush with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.CHAINIs the Box Two Prime 9 Chain compatible with other 9 speed drivetrains? Yes, All Box prime 9 chains have standard external geometry that will work with most existing 9 speed drivetrains.Is the Box Two Prime 9 Chain Compatible with any wide narrow chainring? No, Box Prime 9 chains are compatible with most 11-speed wide narrow chainrings but there are some chainrings that can result in poor performance. We recommend the following 11 speed wide/narrow chainrings for best performance, Wolftooth Components, Raceface, One Up Components, Absolute Black.How should I clean my Box Two Prime 9 Chain? We suggest removing the chain from the bike and using a soft bristle brush or rag with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.Buy Box Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Box Two Prime 9 Speed MTB GroupsetReady for fast and fun MTB adventures, this groupset offers incredibly smooth gearing and precise operation on your mountain bike. It delivers similar performance to the top-tier Box One without the costly features. You still get the Tri-Pack (TM) Clutch in the rear mech only it isn't adjustable. The cassette's 11-50T range is equally impressive and the action on the shifter is just as snappy although you don't get the rigid die-cast pull lever. Completing this groupset is its high-quality chain, which boasts impressive torque power and speed as you explore the trails on your mountain bike.Box Two Prime 9 ShifterThe Box Two shifter is the only shifter on the market (other than our Box One) that comes factory stock with a hinged clamp. Box Two is our performance tier so this shifter still maintains the durable cast aluminium top shell but trades out the Box One's 1-piece pull-lever for a 2-piece resin and steel variant. All Prime 9 shifters take advantage of the 9-speed's inherent durability, simplicity, and reliability. Not only is the shifter mechanism joyfully simplified, but fewer shifts are needed for every mile of travel. And the best part is? Prime 9 is also terribly forgiving so you won't have to constantly adjust your set-up.Features: Material: Glass Fibre / Nylon Composite, Steel, Aluminum Alloy with Matte Onyx finish Hinged and Extruded Clamp 2 pc Pull Lever / Up to 3 Gears Per Shift* ( two options available to select) Die Cast Top Shell Fast Action Release Lever Prime 9 Technology Multi Shift Option Not Intended for E-Bike Use Single Shift Option Recommended for E-Bike Use Weight 135gBox Two Prime 9 X-Wide Rear DerailleurThe Box Two Prime 9 Rear Derailleur is very similar to the Box One version however, to be more wallet-friendly, it offers a non-adjustable Tri-Pack Clutch, bushing pulleys, and some muted finishes. Box Two rear derailleurs are still optimized for 11-50t cassettes and offer durability and performance for the most demanding terrain, just at a lower price!Features: Material: Stainless Steel, Hardened Alloy Steel with Matte Onyx finish Tri-Pack Limited Slip Clutch Sealed Bushings Pulleys Nylon Composite Knuckle Pivot-Tech Cable Stay Durable 3D Forged Linkages Forged Inner and Outer Cage Prime 9 Technology Compatible with Standard Derailleur Hangers (Non Direct-Mount) Weight: 290gBox Two Prime 9 11-50T CassetteThe Box Two cassette was where Prime 9 started. Originally conceived as an E-MTB product to deliver long service life and extra range over fewer gears, we quickly grew to enjoy its abilities on unpowered MTBs. All cogs are stamped from steel and subsequently, the larger ones are pinned to alloy spiders. Due to its provenance, this is, without doubt, the most durable cassette in the range.Features: Material: Hardened Alloy Steel, Aluminium Cogs Pinned to Lightweight Spiders Ultra-Wide Ratio with Consistent Progression Prime 9 Technology Our Most Durable Cassette Compatible with HG Freehub Bodies Not Intended for E-Bike Use Weight: 645gBox Two Prime 9 126 Link Chain NickelThe Box Two chain's nickel plating adds both corrosion and wear-resistance. All Prime 9 chains have chamfered shifting edges, solid plates and solid pins to safeguard durability. Our unique inner link spacing is engineered to grab those modern wide/narrow chainrings. We chose to modernize the 9-speed platform due to the chain's spirited reputation.Features: Material: Hardened Alloy Steel with Nickel finish Our Most Durable Chain Nickel Plated Protection Durable Hardened Solid Pins Wide/Narrow Chainring Compatible Prime 9 Technology Weight: 350gFAQSHIFTERDoes the Box Two Prime 9 Shifter come with a cable? Yes. All Box Two Twin Lever Shifters come with a stainless steel shift cable.How do I remove the cap from the cable port to install a new cable? To remove it, use a Phillips head screwdriver and turn it counter-clockwise a quarter turn You can then push the cap out by applying pressure to the cable from the other side. Please Note: The Cable Port is not a screw that un-threads from the cable port, if you turn the cable port screw more than 90 degrees damage may occur.Is the Box Two Prime 9 Shifter compatible with other 9 speed derailleurs? No, traditional 9 speed systems use a Cable Pull that is not compatible with prime 9.DERAILLEURAre Box Prime 9 derailleurs compatible with Shimano "direct mount" hangers? No, Shimano direct mount hangers are proprietary and are not compatible with Box derailleurs.Is the Box Two Prime 9 Derailleur compatible with other 9 speed components? No, traditional 9 speed systems use a Cable Pull that is not compatible with Prime 9.Are Box Prime 9 derailleurs compatible with drop bar (road) shifters? No, Box Prime 9 derailleurs are not currently compatible with drop bar shifters, but we do offer a clamp for our shifters to mount on some 31.8mm drop handle bars.How should I clean my Box Two Prime 9 derailleur? We suggest removing the derailleur from the bike and using a soft bristle brush or rag with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.CASSETTEWill the Box Two Prime 9 Cassette fit on a wheel with a SRAM XD Driver? No this will only work with a HG splined Shimano 9-10-11 speed freehub body.Is the Box Two Prime 9 Cassette compatible with other 9 speed drivetrains? No, The Box Two Prime 9 Cassette is optimized for Box Prime 9 drivetrains and running other component variations can result in poor performance.How should I clean my Box Two Prime 9 Cassette? We suggest removing the cassette from the wheel and using a soft bristle brush with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.CHAINIs the Box Two Prime 9 Chain compatible with other 9 speed drivetrains? Yes, All Box prime 9 chains have standard external geometry that will work with most existing 9 speed drivetrains.Is the Box Two Prime 9 Chain Compatible with any wide narrow chainring? No, Box Prime 9 chains are compatible with most 11-speed wide narrow chainrings but there are some chainrings that can result in poor performance. We recommend the following 11 speed wide/narrow chainrings for best performance, Wolftooth Components, Raceface, One Up Components, Absolute Black.How should I clean my Box Two Prime 9 Chain? We suggest removing the chain from the bike and using a soft bristle brush or rag with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.Buy Box Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Box Two Prime 9 Speed MTB Rear DerailleurClassed as Box's most durable derailleur, this 9 speed rear mech offers super-smooth and consistent operation on your mountain bike. It is very similar to the Box One version however, to be more wallet-friendly, it offers a non-adjustable Tri-Pack Clutch, bushing pulleys, and some muted finishes. Box Two rear derailleurs are still optimised for 11-50T cassettes and offer durability and performance for the most demanding terrain, just at a lower price.FAQAre Box Prime 9 derailleurs compatible with Shimano "direct mount" hangers? No, Shimano direct mount hangers are proprietary and are not compatible with Box derailleurs.Is the Box Two Prime 9 Derailleur compatible with other 9 speed components? No, traditional 9 speed systems use a Cable Pull that is not compatible with Prime 9.Are Box Prime 9 derailleurs compatible with drop bar (road) shifters? No, Box Prime 9 derailleurs are not currently compatible with drop bar shifters, but we do offer a clamp for our shifters to mount on some 31.8mm drop handle bars.How should I clean my Box Two Prime 9 derailleur? We suggest removing the derailleur from the bike and using a soft bristle brush or rag with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.Features: Material: Stainless Steel, Hardened Alloy Steel with Matte Onyx finish Tri-Pack Limited Slip Clutch Sealed Bushings Pulleys Nylon Composite Knuckle Pivot-Tech Cable Stay Durable 3D Forged Linkages Forged Inner and Outer CagePrime 9 TechnologyCompatible with Standard Derailleur Hangers (Non Direct-Mount) Compatibility: Box One Prime 9 11-50T Cassette Black Box Two Prime 9 11-50T Cassette Black Box Three Prime 9 11-50T Cassette Black Box One Prime 9 Chain 126L DLC Black Box Two Prime 9 126 Link Chain Nickel Box Three Prime 9 126 Link Chain Polished Box One Prime 9 Shifter Black Box Two Prime 9 Shifter Black Box Three Prime 9 Shifter Black Weight: 290gBuy Box Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Box Two-Three Prime 9 X Wide MTB GroupsetAll set for hitting your favourite local trails, this groupset is available as a Single Shift option for electric mountain bikes (E-MTB) and a Multi Shift option for mountain bikes (MTB). Combining four trail-ready components from Box's Two and Three range, this model is simple to set up and allows you to upgrade your existing drivetrain for functional and intuitive shifting performance wherever your next adventure takes you.Did you know that you can mix and match Prime 9? Can't decide between the modern basics of Box Three and the long service life of Box Two? Well, you don't need to! With this pre-configured and pre-tested option, you'll receive a Box Three cassette paired to the durable Box Two derailleur, shifter and chain.Box Three Prime 9 Cassette 11-50TThe Box Three cassette draws from both of its Box One and Box Two siblings to create a sensible all-rounder. All cogs are stamped from steel. The main difference here versus Box Two is the use of additional weight-reducing holes on the cogs. This X-Wide version offers an 11-50T range.Features: Material: Aluminium, Cold Rolled Steel Finish: ED Black Gear Ratio: 11-50T Gears: 11 - 13 - 15 - 18 - 22 - 28 - 34 - 42 - 50 Box Component's Best All-Rounder Cassette Steel Stamped Cogs Ultra-Wide Ratio with Consistent Progression Prime 9 Technology Compatible with HG Freehub Bodies Weight: 660gBox Two Prime 9 Chain 126LThe Box Two chain's nickel plating adds both corrosion and wear-resistance. All Prime 9 chains have chamfered shifting edges, solid plates and solid pins to safeguard durability. The unique inner link spacing is engineered to grab those modern wide/narrow chainrings. Box chose to modernise the 9-speed platform due to the chain's spirited reputation.Features: Material: Hardened Alloy Steel Finish: Nickel Box Component's Most Durable Chain Nickel Plated Protection Durable Hardened Solid Pins Wide/Narrow Chainring Compatible Compatible with most 10,11, & 12-speed wide / narrow chain rings Prime 9 Technology Weight: 305gBox Two Prime 9 Shifter (Select Option)The Box Two shifter is the only shifter on the market (other than the Box One) that comes factory stock with a hinged clamp. Box Two is performance tier, so this shifter still maintains the durable cast aluminium top shell but trades out the Box One's 1-piece pull-lever for a 2-piece resin and steel variant. All Prime 9 shifters take advantage of the 9-speed's inherent durability, simplicity, and reliability. Not only is the shifter mechanism joyfully simplified, but fewer shifts are needed for every mile of travel. And the best part is? Prime 9 is also terribly forgiving so you won't have to constantly adjust your set-up. Available as a multi-shift option (pull several gears at once) or single-shift shifter option (a sound choice for e-bikes). Please select the option from the menu to suit your bike.Features: Material: Glass Fibre / Nylon Composite, Steel, Aluminium Alloy Finish: Matte Onyx Hinged and Extruded Clamp 2 pc Pull Lever / Up to 3 Gears Per Shift* (Multi Shift Option) Die Cast Top Shell Fast Action Release Lever Prime 9 Technology Multi Shift Option Not Intended for E-Bike Use Single Shift Option Recommended for E-Bike Use Weight: 135gBox Two Prime 9 X-Wide Rear DerailleurThe Box Two Prime 9 Rear Derailleur is very similar to the Box One version however, to be more wallet-friendly, it offers a nonadjustable Tri-Pack Clutch, bushing pulleys and some muted finishes. Box Two rear derailleurs are still optimised for 11-50t cassettes and offer durability and performance for the most demanding terrain, just at lower price.Features: Material: Stainless Steel, Hardened Alloy Steel Finish: Matte Onyx Tri-Pack Limited Slip Clutch Sealed Bushings Pulleys Nylon Composite Knuckle Pivot-Tech Cable Stay Durable 3D Forged Linkages Forged Inner and Outer Cage Prime 9 Technology Compatible with Standard Derailleur Hangers (Non Direct-Mount) Weight: 290gManufacturer's Part Numbers: BX2PR9GRP03 Black Single Shift BX2PR9GRP04 Black Multi ShiftBuy Box Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Brand-X 10 Speed MTB CassetteSuitable for both mountain bike (MTB) and touring bike disciplines, this 10 speed cassette features a high tensile steel construction for maximum strength and dependability on your ride. It uses a standard Shimano HG spline with a tooth profile that's optimised to aid gear changes and reduce noise. This makes it an ideal choice of upgrade for replacing your old 10 speed cassette and benefitting from smooth and reliable performance.Features: Material: High Tensile Steel Use: Mountain bike (MTB), Touring bike Ratio: 11-13-15-17-19-21-24-28-32-36 Freehub Compatibility: Shimano type 9-11-speed freehubs Chain Compatibility: All 10-Speed chains Weight: 424gBuy Brand-X Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
The Brand-X 10 speed 11-36t MTB cassette is the perfect replacement for your 10 speed cassette. The cassette uses a standard Shimano HG spline and is made from high tensile steel so it's super hard wearing. The tooth profile has been optimised to aid gear changes and reduce noise.
Brand-X 11 Speed MTB CassetteBenefitting from high tensile steel cogs on a 7075 alloy spider, this versatile cassette offers an excellent balance of stiffness and reliability without adding any excess grams to your mountain bike (MTB) or touring bike. Brand-X has also kitted out this model with a standard Shimano HG spline and a tooth profile that's optimised to aid gear changes and reduce noise. As a result, it's a great choice of upgrade for replacing your old 11 speed cassette and enjoying smooth performance wherever your ride takes you.Features: Material: High Tensile Steel cogs on a 7075 Alloy Spider Use: Mountain bike (MTB), Touring bike Ratio: 42T Option: 11-13-15-17-19-21-24-28-32-36-42; 46T Option: 11-13-15-18-21-24-28-32-36-40-46 Freehub Compatibility: Shimano type 9-11 speed freehubs Chain Compatibility: All 11 speed chains Weight: 42T Option: 453g; 46 Option: 560gBuy Brand-X Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Brand-X 11 Speed MTB CassetteBenefitting from high tensile steel cogs on a 7075 alloy spider, this versatile cassette offers an excellent balance of stiffness and reliability without adding any excess grams to your mountain bike (MTB) or touring bike. Brand-X has also kitted out this model with a standard Shimano HG spline and a tooth profile that's optimised to aid gear changes and reduce noise. As a result, it's a great choice of upgrade for replacing your old 11 speed cassette and enjoying smooth performance wherever your ride takes you.Features: Material: High Tensile Steel cogs on a 7075 Alloy Spider Use: Mountain bike (MTB), Touring bike Ratio: 42T Option: 11-13-15-17-19-21-24-28-32-36-42; 46T Option: 11-13-15-18-21-24-28-32-36-40-46 Freehub Compatibility: Shimano type 9-11 speed freehubs Chain Compatibility: All 11 speed chains Weight: 42T Option: 453g; 46 Option: 560gBuy Brand-X Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
The Brand-X 11 speed MTB cassette is the perfect replacement for your 11 speed cassette. Available in both 11-42t and 11-46t options depending on your ratio requirement. The cassette uses a standard Shimano HG spline and its high tensile steel cogs are mounted on a 7075 alloy spider for maximum durability while keeping weight to a minimum. The tooth profile is also optimised to aid gear changes and reduce noise.
Brand-X 12 Speed MTB CassettePerfectly suited for the rigours of modern mountain bike (MTB) riding, this 12 speed cassette is equipped with high tensile steel cogs on a 7075 alloy spider for maximum strength and durability. Brand-X has also kitted out this trail-ready model with a standard Shimano HG spline and a tooth profile that has also been optimised to aid gear changes and reduce noise. Available in both 11-50t and 11-52t options depending on your ratio requirement, this is a great choice of upgrade for replacing your old 12 speed MTB cassette and benefitting from smooth and consistent performance.The 11-50 cassette option is fully compatible with SRAM and Shimano, while the 11-52t cassette option is compatible with SRAM drivetrains.Features: Material: High Tensile Steel cogs on a 7075 Alloy Spider Use: Mountain bike (MTB) Ratio: 50T Option: 11-13-15-17-19-21-24-28-32-36-42-50; 52T Option: 11-13-15-18-21-24-28-32-36-40-46-52 Freehub Compatibility: Shimano HG freehubs Chain Compatibility: 12 Speed chainsBuy Brand-X Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Brand-X 12 Speed MTB CassettePerfectly suited for the rigours of modern mountain bike (MTB) riding, this 12 speed cassette is equipped with high tensile steel cogs on a 7075 alloy spider for maximum strength and durability. Brand-X has also kitted out this trail-ready model with a standard Shimano HG spline and a tooth profile that has also been optimised to aid gear changes and reduce noise. Available in both 11-50t and 11-52t options depending on your ratio requirement, this is a great choice of upgrade for replacing your old 12 speed MTB cassette and benefitting from smooth and consistent performance.The 11-50 cassette option is fully compatible with SRAM and Shimano, while the 11-52t cassette option is compatible with SRAM drivetrains.Features: Material: High Tensile Steel cogs on a 7075 Alloy Spider Use: Mountain bike (MTB) Ratio: 50T Option: 11-13-15-17-19-21-24-28-32-36-42-50; 52T Option: 11-13-15-18-21-24-28-32-36-40-46-52 Freehub Compatibility: Shimano HG freehubs Chain Compatibility: 12 Speed chainsBuy Brand-X Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
The Brand-X 12 speed MTB cassette is the perfect replacement for your 12 speed cassette. Available in both 11-50t and 11-52t options depending on your ratio requirement. The cassette uses a standard Shimano HG spline and its high tensile steel cogs are mounted on a 7075 alloy spider for maximum durability while keeping weight to a minimum. The tooth profile has also been optimised to aid gear changes and reduce noise. The 11-50 cassette option is fully compatible with SRAM and Shimano, while the 11-52t cassette option is compatible with SRAM drivetrains.