CeramicSpeed OSPW Aero ALPHA — SRAM Red/Force AXS D1/E1 v2

The most aerodynamically optimised pulley system CeramicSpeed makes — engineered specifically for SRAM Red AXS D1/E1 and Force AXS D1. The OSPW Aero ALPHA v2 pairs the new ALPHA Disc composite-tooth pulleys and ADR (Advanced Derailleur Roller) bearing protection with the proven aero-cage profile, giving TT and triathlon riders running SRAM AXS both watt savings and aero gains in a single upgrade.

Why riders choose OSPW Aero ALPHA for SRAM AXS

Structural aerodynamic cage reduces rear-derailleur drag by up to 60%. The derailleur sits in turbulent air right behind the leg, where standard cages give back free watts. On a flat 40 km TT the aero cage hides real time at the same effort — exactly where AXS-equipped TT and Ironman bikes are decided.

Oversized 13/19 ALPHA Disc pulleys, 35–40% less drivetrain friction over stock. The composite-tooth ALPHA Disc profile rolls quieter and smoother than aluminium teeth, so drivetrain efficiency stacks on top of the aero gain — your AXS bike accelerates and holds speed with less effort on every flat and rolling section.

Patented ADR technology bearing protection. Standard pulley bearings die fast under race-day rain, sweat and pressure-washing. ADR seals out water and grit so the system stays silent and free-rolling through every race block instead of going crunchy mid-season.

Tuned for SRAM AXS shift dynamics. Generic aero cages can throw off SRAM's electronic shift timing. The v2 cage geometry is matched to D1/E1 derailleurs so shifts stay crisp and consistent across the cassette under race load.

Plug-and-play install in under 15 minutes. No chain length change, no AXS recalibration — bolts onto your existing Red or Force D1/E1 derailleur with the supplied eTap AXS tool. Fit it the night before your A-race without any drivetrain anxiety.

2-year warranty, 60,000 km service interval.

What's in the box

• Complete OSPW Aero ALPHA system for SRAM Red/Force AXS (cage + 13/19 ALPHA Disc pulleys, pre-assembled)
• Tool for eTap AXS
• Mounting hardware
• CeramicSpeed decal

Specifications

• SKU: 116925
• Net weight: 118 g
• Pulley material: Aluminium with composite ALPHA Disc tooth profile
• Discipline: Road, TT and Tri
• Derailleur: SRAM Red AXS D1/E1, Force AXS D1 (12-speed)

It is not possible to add ALPHA Disc pulleys to a previous-generation OSPW Aero cage — this is a complete updated system. Confirm your derailleur generation (D1 or E1, printed on the cage) before ordering. If you're unsure, contact us and we'll confirm fitment for your bike.