ALPHA Pulley Wheels put CeramicSpeed's most durable pulley technology into a stock-size set, so you get smoother shifting and longer service life without changing your derailleur cage. They're built for road, gravel and mountain bikes.
Each pulley is a one-piece molded composite body running CeramicSpeed's low-friction ceramic bearings, protected by their patented ADR (Active Debris Remover) design. The upper and lower pulleys are each shaped for their job, for crisp chain control and quiet running under load. Stainless-steel dust covers made for each derailleur protect the bearings and remove the need for extra spacers.
Pick the Fit that matches your rear derailleur. Developed, designed and hand-built in Denmark.
- Fits: Shimano R9250, R9150, R8150/R8050/R7150/R5800, RX827/RX822 + MTB 12s, RX825/RX820, M9100; SRAM Red/Force E1, Red D1/Force D2/D1/Rival E1/D1, XPLR E1 + Transmission XX SL/XX/XO, XPLR D1, Eagle AXS XX1/X01 + XX1/X01/GX
- Body: one-piece molded composite
- Bearings: CeramicSpeed low-friction ceramic with ADR protection
- Dust covers: stainless steel, derailleur-specific (no extra spacers needed)
- In the box: set of ALPHA Pulley Wheels, UFO TECH Pulley Wheel Oil 15 ml