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The PF4130 bottom bracket is Press Fit into 41mm diameter shells that are 86.5mm wide and mate most cranks with a 30mm spindle to that standard. If you have a BB86 frame and want to install a 386EVO crank or Rotor 30mm crank, this is the kit you need.CeramicSpeed bearings are installed in cups. The ..

The 12-tooth narrow-wide design on these CeramicSpeed pulleys decreases chain articulation and ensures a crisp chain engagement on to and off of each pulley.The symmetrical 12-tooth narrow-wide design allows the chain to move smoothly on and off the pulleys without additional drag.CeramicSpeed Pulle..

Improve the performance of your 11-speed Shimano rear derailleur with pulleys that reduce friction and increase bearing life. Ours are designed to work with less drag, adding to the power transmitted to the rear wheel. There are choices available to best meet your needs. Machined aluminum pulleys wi..

The 12-tooth narrow-wide design on these CeramicSpeed pulleys decreases chain articulation and ensures a crisp chain engagement on to and off of each pulley.The symmetrical 12-tooth narrow-wide design allows the chain to move smoothly on and off the pulleys without additional drag.CeramicSpeed Pulle..

The CeramicSpeed Pulley Wheels for Shimano GRX 820 2X12 consist of a set of 11-tooth upper and 13-tooth lower anodized aluminum pulleys for precise shifting and long-lasting durability.Equipped with hand built CeramicSpeed hybrid ceramic bearings for the ultimate in efficiency, and available with ei..

The CeramicSpeed Pulley Wheels for Shimano GRX 820 2X12 consist of a set of 11-tooth upper and 13-tooth lower anodized aluminum pulleys for precise shifting and long-lasting durability.Equipped with hand built CeramicSpeed hybrid ceramic bearings for the ultimate in efficiency, and available with ei..

The CeramicSpeed Pulley Wheels for Shimano GRX 822 1X12 consist of a matched pair of 13-tooth anodized aluminum pulleys for precise shifting and long-lasting durability.Equipped with hand built CeramicSpeed hybrid ceramic bearings for the ultimate in efficiency, and available with either the standar..

The CeramicSpeed Pulley Wheels for Shimano GRX 822 1X12 consist of a matched pair of 13-tooth anodized aluminum pulleys for precise shifting and long-lasting durability.Equipped with hand built CeramicSpeed hybrid ceramic bearings for the ultimate in efficiency, and available with either the standar..

Handbuilt bearings, designed and manufactured in Denmark.Two sets of pulley spacers included providing compatibility with Shimano Dura Ace 9250, Ultegra 8150 and 105 7150 rear derailleurs.In the box:Two 11-tooth pulley wheels.Alloy Spacer Kit.CeramicSpeed Oil for Pulley Wheel Bearings, 15ml. bottle...

This titanium version of the Pulley Wheels for Shimano, 12s for Dura Ace 9250, Ultegra 8150 and 105 offers an ultra long life due to the extreme durability of titanium and coated bearings.Hand-built bearings, designed and manufactured in Denmark.The special tooth profile is custom made for the Shima..