CeramicSpeed OSPW System SRAM Red/Force AXS GoldFeaturing a moulded carbon fibre cage, this hand built limited edition OSPW System provides the best balance of low weight and durability. It is developed specifically for SRAM Red AXS and SRAM Force AXS systems and has two spring tension settings, that allow for a customised setup based on riding conditions.Limited Edition SRAM Red/Force AXS OSPW SystemThe Oversized Pulley Wheel System for SRAM Red and Force AXS features a 15-tooth upper and 19-tooth lower pulley wheel setting, for maximum efficiency. This OSPW System is also compatible with the 2020 11 speed SRAM Red eTap derailleur featuring a clutch.Please Note: While there are visual similarities with the SRAM RED/Force AXS derailleurs, this OSPW system is not compatible with the SRAM Rival AXS, or SRAM RED, Force, or Rival XPLR eTap AXS rear derailleurs. Please see our pulley wheels for SRAM AXS Road.Features: Pulley Wheel Material: Aluminium Cage Material: Carbon reinforced PA Use: Road, Gravel and Cyclocross (CX) Speed: 12 speed Pulley Wheels: CeramicSpeed 15-tooth upper and 19-tooth lower Bearing Options: CeramicSpeed Standard or Coated (choose option from menu) Compatibility: SRAM Red AXS and SRAM Force AXS. 2020 SRAM Red eTap 11 speed derailleur with the orbit clutch. This system is also compatible with the wider range Force AXS medium cage derailleur. This system is not compatible with SRAM Rival AXS Cassette Compatibility: Fits 12 speed 10 to 36-tooth cassettes. For use with the 11 speed clutched derailleur fits 11-32 cassettes Spring Tension Settings: 2 spring CeramicSpeed Pulley Wheel Oil, 15ml dropper bottleIn the Box: Complete OSPW System for SRAM Red/Force AXS. CeramicSpeed Pulley Oil, 15ml dropper bottle. Custom tool for removal of stock cage and securing of OSPW System.Special notes: Custom tool included for removal of the stock cage and securing of OSPW. The factory clutch mechanism will remain intact and in stock form. There is no damage or modification to the clutch for the installation of the OSPW System. Manufacturer's Part Numbers: 110201 Gold Option 1 Coated 110200 Gold Option 2 Non CoatedBuy CeramicSpeed Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
This version of the Over Sized Pulley Wheel system features coated bearings, which means the bearings have been treated with a special, thin layer coating system. This coating ensures prolonged bearing life, lower friction and means the bearing race is exceptionally resistant to corrosion. This Pulley Wheel System is designed to enhance drivetrain performance and increase the efficiency of power transfer from rider to the road. Created using the highest quality materials and ensures that performance from the already exceptional Campagnolo rear derailleurs is increased even further, pushing you even further ahead of the competition. This model is not compatible with Campagnolo 12-Speed drivetrains at this time. Please note: Many Campagnolo rear derailleur designs (including all EPS models) do not feature a B-limit adjustment screw. It may not be possible to use a 32 tooth cassette with this system due to how some bike dropouts are designed. Compatible with: Record mechanical Record EPS Super Record mechanical Super Record EPS Potenza mechanical Chorus
CeramicSpeed OSPW System R9100/R8000 The CeramicSpeed OSPW System Shimano R9100/R8000 is developed and designed entirely for Shimano 9100 and 9150 systems and offers advanced gear shifting speed and smoothness for fast and precise drivetrain performance.CeramicSpeed OSPW System Coated Shimano R9100/R8000 adds a competitive edge to your riding with smoother gear changes, watts saved and envy to all who see your bike. This is an updated version of the Oversized Pulley Wheel System for Shimano 9100/9150 and 8000 SS/8050 SS. This new design has an integrated stop tower for easier mounting. The CeramicSpeed Oversized Pulley Wheels System has been proven to be the fastest pulley system in the world, providing energy savings starting from 2.4 watts over standard Shimano systems. The OSPW System for Shimano 9100/9150 and 8000 SS/8050 SS is an industry-leading product, chosen by many of the world's leading cycling teams and professional triathletes. Featuring a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel to provide absolute optimisation of the rear derailleur. The upper and lower oversized aluminium pulley wheels come fitted with either standard or coated CeramicSpeed Bearings. Please note: The OSPW System for 9100/9150 and 8000 SS/8050 SS is NOT compatible with Ultegra 8000-GS or 8050-GS (medium cage) derailleurs, nor with the clutch equipped Ultegra RD RX800 and RX805. Also note: while there are design similarities this OSPW is not compatible with the 12-speed Shimano 9200 or 8100 series derailleurs. The Shimano 9100/8000 OSPW system is compatible with up to a 32 tooth cassette for both Dura-Ace and Ultegra derailleurs Everything from bearings to the cage is made from the highest quality materials. The oversized aluminium pulley wheels are fitted with standard or coated CeramicSpeed Bearings, which reduce friction to the minimum. The overall power savings of the OSPW System for Shimano reach 30%-60% or more in some cases. The OSPW System has a lifetime that lasts 3-5 times longer than the commonly used standard pulleys on the market. The OSPW System for Shimano comes as two different systems, one compatible with Ultegra (6700/6770/6800/6870) and Dura-Ace (7900/7970/9000/9070), 10s and 11s, electric and mechanical groupsets, and another compatible with the Shimano 9100/9150 series. While the first option features a set of two 17-tooth pulleys, the OSPW System for Shimano 9100/9150 features an optimal 13/19-tooth combination specially developed to fit the design of the derailleur. IMPORTANT: When travelling, please remember to dismount your entire rear derailleur with an Allen key, as the OSPW System will not fit in most bike travel bags and could be damaged if left on. The revolutionary OSPW System is developed, produced and assembled by hand in Denmark. The product is the result of an in-depth development process and has been designed for optimal performance. Like all other products delivered by CeramicSpeed, OSPW System has also undergone a thorough test program. We are proud to say that professional triathletes such as Tim Don and Tyler Butterfield have great feedback for the system and, along with Pro Continental teams, they have made it a permanent part of their equipment. Regarding the maintenance of your OSPW System, it is important that you properly lubricate your bearings in order to ensure optimal performance and maximum longevity. Add oil by using the lubrication points on the back cage plate, so that oil can penetrate the bearing. Do this when you lubricate your chain, if you have washed your bike or after riding in wet or muddy conditions. Features: Coated bearings for improved lifespan and reduced friction Compatible with Shimano 9100/9150 and 8000 SS/8050 SS systems Supplied with all the required hardware for installation 30%-60% reduction in friction depending on setup In The Box: A complete 13-tooth/19-tooth OSPW System CeramicSpeed Bearing Oil in 15ml dropper bottleBuy CeramicSpeed Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
CeramicSpeed OSPW System Campagnolo 12s EPS GoldFeaturing a moulded carbon fibre cage, this special limited edition OSPW System offers the best balance of low weight and durability. It is developed specifically for the Campagnolo 12 speed EPS system and offers a three-spring tension setting that allows for optimal setup based on riding conditions.Limited Edition Campagnolo OSPW SystemLike every other CeramicSpeed Oversized Pulley Wheel System, this is developed, designed and handbuilt in Denmark. It is available with either CeramicSpeed Standard or Coated pulleys (choose option from the menu) with a lifetime CeramicSpeed warranty on the coated version and four years CeramicSpeed warranty on the standard version.The system is not compatible with 12 speed mechanical.Features: Pulley Wheel Material: Aluminium Cage Material: Carbon reinforced PA Use: Road Speed: 12 speed Pulley Wheels: CeramicSpeed 13-tooth upper and 19-tooth lower Bearing Options: CeramicSpeed Standard or Coated (choose from the menu) Compatibility: Campagnolo 12-speed Super Record EPS (electronic). Please note, the system is not compatible with 12-speed mechanical Cassette Compatibility: Fits cassettes from 11 to 34-tooth Spring Tension Settings: 3 spring tension settings Ceramic Speed Pulley OilBuy CeramicSpeed Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
◌CeramicSpeed OSPW System Shimano R9200-R8100The OSPW System Shimano R9200-R8100 from CeramicSpeed is designed and engineered to enhance performance for the Shimano 9200 and R8100 series rear derailleurs. It features an integrated stop tower for simple installation and durability, and it significantly enhances gear shifting performance.The CeramicSpeed Oversized Pulley Wheels System has been proven to be the fastest pulley system in the world. This OSPW System has hand built CeramicSpeed Bearings installed in each pulley and comes with a 4-year warranty as standard and a lifetime warranty when choosing coated bearings. CeramicSpeed OSPW Systems are an industry-leading product, chosen by World Champions and top athletes around the world. Featuring a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel to provide absolute optimisation of the rear derailleur. The upper and lower oversized aluminium pulley wheels come fitted with either standard or coated CeramicSpeed Bearings. For 8100 derailleurs, the cage uses the factory derailleur body washer. 9200 derailleurs will require the new included derailleur body washer. Since its introduction in 2015, the CeramicSpeed Oversized Pulley Wheel System has been through 13 unique derailleur compatibility developments. No other pulley system has the depth of use and trust as the CeramicSpeed OSPW, which counts both Men's and Women's Triathlon World Champions, World Tour professional road teams, XCO professional MTB Teams, and elite athletes worldwide as its users. This OSPW System has hand built CeramicSpeed Bearings installed in each pulley and it comes with a four-year manufacturer's warranty as standard. Featuring a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel to provide absolute optimisation of the rear derailleur. The upper and lower oversized aluminium pulley wheels come fitted with standard CeramicSpeed Bearings. Also included in the box is a 15ml dropper bottle of CeramicSpeed Bearing Oil. Technical DataThe overall power savings of the OSPW System for Shimano 9200 reach 30%-60%, or more in some cases, over a stock setup. The oversized pulley wheels have 3-5 times longer lifetime than the commonly used standard pulleys on the market. Maintenance of CeramicSpeed OSPW SystemsRegarding the maintenance of your OSPW System, it is important that you properly lubricate your bearings in order to ensure optimal performance and maximum longevity. Add oil by using the lubrication points on the back cage plate, so that oil can penetrate the bearing. Do this when you lubricate your chain, if you have washed your bike or after riding in wet or muddy conditions. Please note: While there are visual similarities in the 9100 Series OSPW and 9200 Series OSPW, the spring tension settings, rotation stop tower placement, and mounting pin depth are slightly repositioned and as such the systems are not cross-compatible. Features: Pulley Wheel Material: Aluminium Cage Material: Carbon Reinforced PA Bearings: Standard or CeramicSpeed bearings (multiple options in the selection menu) CeramicSpeed Grease/Oil: Pulley Oil (Standard) Use: Road Speed: 12-Speed Compatibility: Shimano Dura Ace 9200 / Ultegra 8100 Cassette Compatibility: Fits 11-30T and 11-34T Shimano 12 speed cassette Spring Tension Settings: 4 spring tension settings In The Box: A complete 13-tooth/19-tooth OSPW System, CeramicSpeed Bearing Oil in 15ml dropper bottleTechnologies: Integrated stop tower for simple installation and durability Lifetime warranty on system cage Trusted design by World Champions and top athletes around the world 13/19 pulley wheel sizes Standard or CeramicSpeed bearings (multiple options in the selection menu) Hand built CeramicSpeed bearings are installed in each pulleyBuy CeramicSpeed Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
The Oversized Pulley Wheel System for SRAM Red and Force AXS features a 15-tooth upper and 19-tooth lower pulley wheel setting, for maximum efficiency. The handbuilt OSPW System has two spring tension settings, that allows customised setup based on riding conditions.This OSPW System is also compatible with the 2020 11 speed SRAM Red eTap derailleur featuring a clutch.In the box:Complete OSPW System for SRAM Red/Force AXS.,CeramicSpeed Pulley Oil, 15 ml. dropper bottle.,Custom tool for removal of stock cage and securing of OSPW System..Technical Data:Pulley Wheels: CeramicSpeed 15-tooth upper and 19-tooth lower,Pulley Wheel Material: Aluminium,Cage Marterial: Carbon reinforced PA,Bearing Options: CeramicSpeed Standard or Coated,CeramicSpeed Pulley Wheel Oil, 15 ml. dropper bottle,Compatibility: SRAM Red AXS and SRAM Force AXS. 2020 SRAM Red eTap 11 speed derailleur with the orbit clutch. This system is also compatible with the wider range Force AXS medium cage derailleur.,Cassette Compatibility: Fits 12 speed 10 to 36-tooth cassettes. For use with the 11 speed clutched derailleur fits 11-32 cassettes.,Spring Tension Settings: 2 spring,Speed: 12 speed,Discipline: Road and Gravel/Cross.Special notes:Custom tool included for removal of stock cage and securing of OSPW. The factory clutch mechanism will remain intact and in stick form. There is no damage or modification to the clutch for the installation of the OSPW System.
CeramicSpeed OSPW System Shimano 9000-6800 The OSPW System Shimano 9000-6800 from CeramicSpeed offers extended durability and enhanced gear shifting smoothness and accuracy. Ideal for road racing, it features a carbon cage with high-quality aluminium pulley wheels and industry-leading bearings.CeramicSpeed OSPW System Shimano 9000-6800 will add a competitive edge to your riding with smoother gear changes, watts saved and envy to all who see your bike. Developed and designed entirely by CeramicSpeed, the Oversized Pulley Wheel (OSPW) System for Shimano 9000-6800 provides the ultimate optimization of your bicycle's drivetrain. This OSPW System features a set of 17-tooth aluminium Pulley Wheels housed in a specially designed polyamide (PA) and carbon cage. The upper and lower 17-tooth oversized aluminium pulley wheels come fitted with either standard or coated CeramicSpeed Bearings. The Oversized Pulley Wheel (OSPW) System is the product of choice by many of the world's leading cycling teams and triathletes. Compatible with Ultegra 6700/6770/6800/6870 mechanical and Di2 rear derailleurs and Dura-Ace 7900/7970/9000/9070 mechanical and Di2 rear derailleurs. The cage is made from carbon fibre and reinforced PA while the 17-tooth pulley wheels are made from aluminium and mounted with high-quality CeramicSpeed bearings. The revolutionary OSPW System is mounted with CeramicSpeed coated bearings, which means it has undergone a special coating treatment to provide even more protection and lower friction. A very thin protective coating is applied to the bearing races, which further increases the resistance to corrosion or damage from foreign objects. The OSPW has been tested and confirmed to be the world's fastest pulley wheel system, therefore enhancing your performance with free speed, which gives you a more efficient drivetrain. Since its introduction in 2015, the CeramicSpeed Oversized Pulley Wheel System has been through 13 unique derailleur compatibility developments. No other pulley system has the depth of use and trust as the CeramicSpeed OSPW, which counts both Men's and Women's Triathlon World Champions, World Tour professional road teams, XCO professional MTB Teams, and elite athletes worldwide as its users. MaintenanceIt's important that you properly lubricate your bearings in order to ensure optimal performance and maximum longevity. Add oil to the outside of the bearing seal, so that oil can penetrate the bearing. Do this when you lubricate your chain, or if you have washed your bike or have been riding in wet or muddy conditions. This revolutionary OSPW System is developed, produced and assembled by hand in Denmark. This plug-and-play product is the result of an in-depth development process and has been designed for optimal performance. Created to answer the need for less friction (as much as 60%), increased speed and a more efficient drivetrain. This OSPW System helps you ride any distance comfortably. The optimisation of your drivetrain with the new CeramicSpeed OSPW System delivers access to industry-leading efficiency. The use of high-quality materials means this system will outlast other commonly used pulley wheels on the market. Features: Material: Carbon/PA Cage, Aluminium Pulley Wheels Compatibility: Shimano Dura-Ace 9000 / Ultegra 6800 Drivetrain Speed: 10/11-Speed A complete 17-tooth OSPW System CeramicSpeed bearing oil in 15ml dropper bottle Weight: 57gBuy CeramicSpeed Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
CeramicSpeed OSPW R9100/R8000 CoatedThis Shimano R9100/R8000 specific version of CeramicSpeed’s OSPW system features the same construction as the standard model, but it’s been enhanced to make the most of your power output even further and the increased watt outputs start at 2.4 watts. The ceramic bearings in this model have been coated with a special treatment to further reduce friction and increase protection from wear and tear. A thin coating is also applied to the bearing races, to increase corrosion resistance.Shimano Specific Pulley WheelsBecause of the design of the 9100 series derailleurs, the R&D team at CeramicSpeed tested and concluded that the best performing combination of oversized pulleys for the Shimano 9100 series is a 13-tooth upper and 19-tooth lower pulley. The design of this Shimano-specific OSPW System is very strong and stiff to ensure a high durability factor. In-house tests show that the higher the tooth count, the longer the pulley wheel lasts.Optimum PerformanceThis revolutionary OSPW System is developed, produced and assembled by hand in Denmark. Designed to be a plug-and-play fit, it's the result of an in-depth development process and has been finely tuned to provide optimal performance. Created to answer the need for less friction (as much as 60%), increased speed and a more efficient drivetrain, the OSPW System gives back what other drivetrains take: watts.Features: Material: Cage: Carbon Fibre, Polyamide; Bearings: Polyamide, Steel and Ceramic; Castors: Aluminium Bearings: Ceramic type 607 Pulley Teeth: Top: 13T; Bottom: 19T Speed: 11-SpeedCapacity: 32T Compatibility: Shimano Dura-ace 9100/9150 and Ultegra R8000 rear derailleurs onlyUse: Road, Triathlon, RanndoneurWeight: 57gMaintenance:It’s important that you properly lubricate your bearings to ensure optimal performance and maximum longevity. Add oil to the outside of the bearing seal, so that oil can penetrate the bearing. Do this when you lubricate your chain, or if you have washed your bike or have been riding in wet or muddy conditions.Buy CeramicSpeed Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
CeramicSpeed OSPW R9100/R8000 CoatedThis Shimano R9100/R8000 specific version of CeramicSpeed’s OSPW system features the same construction as the standard model, but it’s been enhanced to make the most of your power output even further and the increased watt outputs start at 2.4 watts. The ceramic bearings in this model have been coated with a special treatment to further reduce friction and increase protection from wear and tear. A thin coating is also applied to the bearing races, to increase corrosion resistance.Shimano Specific Pulley WheelsBecause of the design of the 9100 series derailleurs, the R&D team at CeramicSpeed tested and concluded that the best performing combination of oversized pulleys for the Shimano 9100 series is a 13-tooth upper and 19-tooth lower pulley. The design of this Shimano-specific OSPW System is very strong and stiff to ensure a high durability factor. In-house tests show that the higher the tooth count, the longer the pulley wheel lasts.Optimum PerformanceThis revolutionary OSPW System is developed, produced and assembled by hand in Denmark. Designed to be a plug-and-play fit, it's the result of an in-depth development process and has been finely tuned to provide optimal performance. Created to answer the need for less friction (as much as 60%), increased speed and a more efficient drivetrain, the OSPW System gives back what other drivetrains take: watts.Features: Material: Cage: Carbon Fibre, Polyamide; Bearings: Polyamide, Steel and Ceramic; Castors: Aluminium Bearings: Ceramic type 607 Pulley Teeth: Top: 13T; Bottom: 19T Speed: 11-SpeedCapacity: 32T Compatibility: Shimano Dura-ace 9100/9150 and Ultegra R8000 rear derailleurs onlyUse: Road, Triathlon, RanndoneurWeight: 57gMaintenance:It’s important that you properly lubricate your bearings to ensure optimal performance and maximum longevity. Add oil to the outside of the bearing seal, so that oil can penetrate the bearing. Do this when you lubricate your chain, or if you have washed your bike or have been riding in wet or muddy conditions.Buy CeramicSpeed Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
CeramicSpeed OSPW System SRAM Red/Force AXSThe OSPW System SRAM Red/Force AXS from CeramicSpeed is designed and engineered to enhance efficiency and shifting performance for SRAM Red and Force AXS groupsets. It features 15T upper and 19T lower pulleys which deliver an amazing 47% less friction than standard SRAM AXS pulley wheels.This fantastic component is perfectly suited for road, gravel and cyclocross riding as it offers durable, reliable and ultra-efficient performance. Ready to dominate across mixed terrains, this brilliant model is specifically developed to withstand the rigours of a long day in the saddle from the smooth city streets to the rocky forest trails. Fast and Smooth Gear Shifting PerformanceReady for action, these hand-built bearings sit within a pair of oversized pulleys which are fitted with a custom-designed and carbon-reinforced PA cage. This makes them more than capable of handling the toughest of riding conditions while giving you phenomenal power and control. Accommodating a 10 to 33T cassette range, this sleek version enables a customised set-up with two spring tensions to suit varying riding conditions. This is the ultimate choice of upgrade for riders who want unparalleled performance and reliability from one of the most efficient components on the market. Since its introduction in 2015, the CeramicSpeed Oversized Pulley Wheel System has been through 13 unique derailleur compatibility developments. No other pulley system has the depth of use and trust as the CeramicSpeed OSPW, which counts both Men's and Women's Triathlon World Champions, World Tour professional road teams, XCO professional MTB Teams, and elite athletes worldwide as its users. Features: Pulley Wheel Material: Aluminium Cage Material: Carbon-reinforced PA Use: Road, Gravel, Cyclocross Speed: 12-Speed Pulley Wheels: CeramicSpeed 15T upper and 19T lower Bearing Options: CeramicSpeed Standard or Coated CeramicSpeed Oil: Pulley Oil Groupset Compatibility: SRAM Red AXS and SRAM Force AXS Cassette Compatibility: 10-33T Spring Tension Settings: 2 spring tension settings ("H" - High and "L" - Low)Buy CeramicSpeed Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
CeramicSpeed OSPW System SRAM Red/Force AXSThe OSPW System SRAM Red/Force AXS from CeramicSpeed is designed and engineered to enhance efficiency and shifting performance for SRAM Red and Force AXS groupsets. It features 15T upper and 19T lower pulleys which deliver an amazing 47% less friction than standard SRAM AXS pulley wheels.This fantastic component is perfectly suited for road, gravel and cyclocross riding as it offers durable, reliable and ultra-efficient performance. Ready to dominate across mixed terrains, this brilliant model is specifically developed to withstand the rigours of a long day in the saddle from the smooth city streets to the rocky forest trails. Fast and Smooth Gear Shifting PerformanceReady for action, these hand-built bearings sit within a pair of oversized pulleys which are fitted with a custom-designed and carbon-reinforced PA cage. This makes them more than capable of handling the toughest of riding conditions while giving you phenomenal power and control. Accommodating a 10 to 33T cassette range, this sleek version enables a customised set-up with two spring tensions to suit varying riding conditions. This is the ultimate choice of upgrade for riders who want unparalleled performance and reliability from one of the most efficient components on the market. Since its introduction in 2015, the CeramicSpeed Oversized Pulley Wheel System has been through 13 unique derailleur compatibility developments. No other pulley system has the depth of use and trust as the CeramicSpeed OSPW, which counts both Men's and Women's Triathlon World Champions, World Tour professional road teams, XCO professional MTB Teams, and elite athletes worldwide as its users. Features: Pulley Wheel Material: Aluminium Cage Material: Carbon-reinforced PA Use: Road, Gravel, Cyclocross Speed: 12-Speed Pulley Wheels: CeramicSpeed 15T upper and 19T lower Bearing Options: CeramicSpeed Standard or Coated CeramicSpeed Oil: Pulley Oil Groupset Compatibility: SRAM Red AXS and SRAM Force AXS Cassette Compatibility: 10-33T Spring Tension Settings: 2 spring tension settings ("H" - High and "L" - Low)Buy CeramicSpeed Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Developed and designed entirely by CeramicSpeed, the Oversized Pulley Wheel (OSPW) System for Shimano 9000/6700 provides the ultimate optimization of your bicycle's drivetrain.This OSPW System features a set of 17-tooth aluminium Pulley Wheels, available in red and black, housed in a specially designed polyamide (PA) and carbon cage.The upper and lower 17-tooth oversized aluminium pulley wheels come fitted with either standard or coated CeramicSpeed Bearings.The Oversized Pulley Wheel (OSPW) System is the product of choice by many of the world's leading cycling teams and triathletes.This specific system is compatible with Ultegra 6700/6770/6800/6870 mechanical and Di2 rear derailleurs and Dura Ace 7900/7970/9000/9070 mechanical and Di2 rear derailleurs.The system is compatible up to a 28tooth cassette on most bikes depending on derailluer hanger.In The Box:A complete 17-tooth OSPW System,CeramicSpeed bearing oil in 15ml dropper bottle.