Dr. Pulley 21x17 Sliding Roller Weights: Vespa & Piaggio Options:10 G Piston Ring 40

Piston Ring 40

Exhaust Lobe: 25

Islander 150

original lines of your vintage headset

Outer Diameter (bell): 137mm

Dr. Pulley 21x17 Sliding Roller Weights: Vespa & Piaggio Options:10 G Piston Ring 40Dr. Pulley 21x17mm sliding roller weights for Vespa and Piaggio 250cc300cc scooters. Unlike standard round rollers, Dr. Pulley's patented sliding shape allows the variator to open more fully delivering a broader gear ratio, higher top speed, and crisper off the line acceleration. Set of 6. SKU: 1200 1113. Key Features Patented non round geometry eliminates flat spots and uneven wear common with circular weights Broader gear ratio variator retracts and