Associated owners can get the benefits of lower rotating weight for their B4.2, T4.2, C4.2, and SC10.2 gearbox. The Associated Standard Aluminum Topshaft from Avid RC is a drop-in replacement that will give you more punch, faster acceleration, and faster laps. Stock racers will love the 6.7g savings in rotating mass! Features 7075 Aluminum Hard-Anodized […]