Traxxas has released Pulleys 20 Groove Middle For Nitro 4-Tec 3.3 under category
These are typically 20 Groove center Pulleys by Traxxas. Features: Ebony in color Tricky vinyl Construction the Pulleys and Flanges. Metal Construction for the Axle Pins. Includes: Two Pulleys Two Flanges Two Axle Pins Specs: Diameter: 5/16" at widest point