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Ratio Upgrade Kit Replacement Jockey Wheels

Replacement Jockey Wheels for all our Upgrade Kits.

View our Support page here. For compatability information chek our kit guide.


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Replacement jockey wheel set for each of our Upgrade Kits.

All our jockeys run on stainless Enduro bearings with labyrinth seal bearing covers.

  • SR52/SR52X Cage – 12t upper, 14t narrow-wide lower. Machined in house from Acetal thermoplastic. Please note these are not compatible with SRAM Eagle* derailleur cages due to interference with the cage plates.
  • 1×12 Road – 12t upper, 12t narrow-wide lower. MJF 3D printed Nylon.
  • 1x13C – 12t upper, 12t narrow-wide lower. MJF 3D printed Nylon.
  • 2×12 Road – 11t upper, 11t lower. MJF 3D printed Nylon.

Bolts not included.

*Campagnolo and Ekar are registered trademarks owned by Campagnolo. Shimano and HG+ are registered trademarks owned by Shimano. AXS®, DoubleTap®, eTap®, SRAM®,SRAM APEX®, SRAM EAGLE®, SRAM FORCE®, SRAM RED®, SRAM RIVAL®, X0®, X01®, XX1® are registered trade marks owned by SRAM, LLC. Eagle™, Exact Actuation™, GX™, NX™, SRAM APEX 1™, SRAM Force 1™, SRAM RIVAL 1™, S-series™, SX™, WiFLi™, X-Actuation™,  XD™, XDR™, XPLR™, XX™, Zero Loss™ are trademarks of SRAM, LLC.

Weight 95 g
Dimensions 17 × 11 × 2 cm
For Upgrade Kit

SR52/SR52X Cage, 1×12 Road, 1x13C, 2×12 Road


To reduce waste we will send orders of over 10 units in bulk packaging rather than individual kit boxes. If you have ordered less than 10 kits but would also like to reduce the packaging of your bulk order or have any questions please email us at [email protected]. Equally if you would like the full packaging for orders of 10+ kits drop us a line too.

Large orders

If you wish to order more than 50 units please contact us directly via [email protected]

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