CeramicSpeed OSPW ALPHA Derailleur Pulley System - Alpha Disc | for Shimano GRX / XTR / XT 12s Di2 - black

OSPW ALPHA for Shimano GRX/XTR/XT

The latest offroad specific OSPW system for Shimano GRX, XTR, XT 12S Di2 derailleurs comes equipped with 14-tooth and 20-tooth ALPHA Disc Pulley Wheels. The composite tooth material offers prolonged wear protection and noise reduction - while the solid aluminum discs eliminate the potential of external objects getting stuck. 

Nestled in the ALPHA Disc pulleys is the patented Active Debris Remover (ADR) bearing protective tech feature. ADR combines a stainless-steel dust cover and a surrounding bladed groove structure that pushes contaminants away from the bearing when rotating. The pinnacle of efficiency and protection when paired with the hand-built hybrid ceramic bearings. 

The cage design was developed with inspiration from the OSPW RS road systems, combined with a commitment to functional strength, to exceed the harsh demands of off-road riding.

Highlights of the CeramicSpeed OSPW ALPHA Derailleur Pulley System

• Lifetime Warranty on complete OSPW systems with ALPHA pulleys.
• Compatible with both 9-45 and 10-51 cassette (not optional with Shimano standard cages)
• ALPHA disc pulley wheels with ADR bearing protection equipped with handbuilt CeramicSpeed bearings.
• Tooth Count: 14+20
• Bearings: 607 w/ADR

Derailleur Compatibility

• Shimano GRX Di2, XTR Di2, XT Di2 and Deore Di2, 9‑45 and 10‑51 cassette
• GRX RX827 ‑ SGS
• GRX RX717 ‑ SGS
• XTR M9250 ‑ GS
• XTR M9250 ‑ SGS
• XTR M9260‑12 ‑ SGS
• XT M8250 ‑ GS
• XT M8250 ‑ SGS
• XT M8260‑16 ‑ SGS
• Deore M6250 ‑ SGS