SRAM X01/X01 DH/X1/CX1/GX1 X-Sync Pulley Set

SRAM X-Sync Pulley Set delivers a straightforward, performance-focused refresh for worn or noisy rear derailleur pulleys. Sold as a pair and designed specifically for X01, X01 DH, X1, CX1 and GX1 X-Sync-compatible derailleurs, this service part restores chain retention and shift precision without changing cassette or chainset geometry.

Built for real-world trail use: the pulleys use durable pulley wheels with sealed cartridge bearings to reduce friction, repel dirt, and extend service intervals. The precision tooth profile maintains optimal chain tracking under load so shifting stays crisp whether you’re attacking steep climbs or railing fast berms.

Durable materials and smooth bearings: these pulleys pair robust wheel construction with sealed bearings for low rolling resistance and long life. The sealed cartridge bearings keep grit and water out, while the pulley wheel material is chosen to balance wear resistance with quiet operation.

• Sold as a pair — upper and lower derailleur pulleys included.
• Sealed bearings for reduced maintenance and consistent performance.
• Precision tooth profile tuned for SRAM X-Sync chains to improve chain engagement and reduce skip under load.

Direct fit for X01/X01 DH/X1/CX1/GX1 — this pulley set is manufactured to SRAM's model ID RD-SPP-A0 and part number 11.7518.032.000, ensuring correct spacing and engagement on compatible derailleurs. Check your derailleur model stamping or consult your owner’s manual to confirm compatibility.

Installation notes: the set replaces both pulleys; use the correct bolt torque and manufacturer-recommended thread locker if required. If your derailleur uses different cage lengths or aftermarket guide cages, verify cage spacing before installation. Weight: 0.06 lb; shipping dims: 4" x 2.5" x 0.3".

This pulley set is ideal for mountain riders and mechanics who want a reliable, affordable way to restore drivetrain performance. If your shifting has become noisy, sluggish, or you see lateral play in pulley wheels, swapping to fresh X-Sync pulleys is a fast way to regain crisp shifts with minimal tools.

Perfect for trail, cross-country and gravity-focused riders who run SRAM X-Sync drivetrains — especially those who ride in mud, rain or dusty conditions and need sealed-bearing reliability between services.

When buying replacement derailleur pulleys, the most important factors are fitment and bearing quality. Always match the pulley set to your derailleur model and part number. Sealed cartridge bearings offer the best balance of low maintenance and durability for most riders.

Consider your riding conditions: if you ride frequently in wet, muddy or dusty environments, prioritize sealed bearings and replace pulleys at the first sign of roughness or play. For roadside or trailside repairs, keep a spare pair in your toolbox to restore smooth shifting quickly.