Pro-Line brand optional Pro-Line Performance Transmission for the 1/10 scaleTraxxas 2WD Slash, Electric Stampede, Bandit, and Rustler. FEATURES: Prebuilt and ready to install with preset slipper systemHard anodized aluminum slipper plates with vent holes and extra thick86 tooth spur gearSlipper tension adjustable by removing rubber capSteel gear differential filled with 5, 000 weight diff oilHardened steel outdrive shafts …