SRAM Derailleur Pulleys for 2003-07 X0 short cage X9 and X7 MFPN=42440051 21 mm internal rim width

21 mm internal rim width supports multiple tire sizes and uses

Materials: Aircraft Aluminum Alloy

Stealth® Phantom offers unbeatable grip and non-marking utility

Kevlar ceramic brass and resin composite material provide smooth braking power with superior modulation

Largest Cog 38 Color Black Rear Der/Shifter Compatibility microSHIFT ADVENT Rear Derailleur Mount Type 10x1 Standard Drivetrain Speeds 9 Chain Wrap Capacity (teeth) 27 Cage Length Short

SRAM Derailleur Pulleys for 2003-07 X0 short cage X9 and X7 MFPN=42440051 21 mm internal rim widthSRAM Derailleur Pulleys for 2003 07 X0 short cage X9 and X7. Original equipment rear derailleur pulleys for SRAM rear derailleurs. TECH SPECS Fits Brand SRAM Drivetrain Speeds 10