SRAM X4 Rear Derailleur - 789 Speed Long Cage Black MFPN=HTU-512 BK and see how much you

and see how much you are slowing down with step speed loss (HRM 600 monitor required

5" gauge is rubber coated for impact protection

where the ball of the foot is in front of the pedal spindle and the arch of the foot aligns with the convex arch in the center of the pedal

14 functions (spoke wrench

SRAM X4 Rear Derailleur - 789 Speed Long Cage Black MFPN=HTU-512 BK and see how much youSRAM X4 Rear Derailleur 789 Speed Long Cage Black. Affordable and reliable derailleur is great for repairs and upgrades. Compatible with 7 8 and 9 speed systems 1: 1 shifter to derailleur actuation ratio for precise light action indexing TECH SPECS Largest Cog 34 Color Black Rear Der Shifter Compatibility SRAM 1: 1 Rear Derailleur Mount Type 10x1 Standard Drivetrain Speeds 7 Drivetrain Speeds 8 Drivetrain Speeds 9 Weight 280 Chain Wrap Capacity