Carbon Ceramic OSPW Rear Cage


Large oversize CNC machined jockey wheels reduce the kinking that normally occurs as the chain rolls around standard small jockey wheels, reducing mechanical friction and lost power. Hybrid ceramic bearings provide a smooth and energy efficient ride. It’s estimated that our OSPW derailleur cages save around┬á2.5w. The carbon fibre cage is lightweight and extremely durable.

Why are our OSPW derailleur┬ácages┬áso much cheaper than ‘big name’ brands?
We use hybrid ceramic bearings (ceramic balls, nylon cage). They use full ceramic bearings, which run very well but are extraordinarily expensive.┬á Oversize jockey wheels are a major friction saver due to reduced chain kinking, with the bearings only part of the performance equation. For about 3x the cost you probably get around 0.5w improvement with full ceramic bearings! A huge cost premium for an insignificant benefit. FastTT┬áOSPW derailleur cages are a fraction of the price of the ‘big name’ brands, but still deliver the highest performance.

“The OSPW has proven to be an unbelievable upgrade and extremely cost efficient.”
Ryan McRae, Florida USA


SKU: CC-OSPW Category:


Oversize CNC Jockey wheels ┬á–┬á7075 aerospace grade aluminium
Bearings – hybrid ceramic (ceramic balls, nylon cage and runners)
Cage – carbon fibre
No lubrication required

Available for:

  • Shimano┬áDura Ace 9000 & 9100 series
  • Shimano Ultegra 6700, 6800 & 8000 series
  • SRAM Red/Force/Rival (not compatible with SRAM AXS 12spd)

We recommend a qualified bike mechanic fit your OSPW. Please refer to the relevant manufacturers workshop manuals for installation instructions.