Serpent 804113 Middle Pulleys Set 18T & 21T - Racing Upgrade  [SER804113]

Heavy Duty Middle Pulleys for Racing Use

The Serpent 804113 Middle Pulleys Set is supplied to give racers a tougher, more reliable pulley option. Using reinforced nylon, the 18T and 21T pieces resist wear while keeping operation smooth under race stresses.

Stable Rotation and Dust Release Features

These pulleys are engineered to run with minimal runout, which reduces friction and preserves drivetrain efficiency. The side openings let contaminant particles escape so parts run cleaner between services.

Great for Rebuilds and Adjustments

Swap these pulleys in during rebuilds or to tweak gearing for specific circuits. Their universal-friendly design makes them a convenient upgrade for many vehicles without complex mods.