This is the Team Associated Replacement 15 tooth 32 pitch Clutch Bell that comes with their Nitro Trucks. Direct fit replacement part Made of hardened steel, colored Grey Encloses clutch shoes and transfers power from the engine to the spur gear. 15/16" outside diameter, 5/16" inside diameter 9/16 thick, teeth is 1/4" wide. One Clutch Bell 15 teeth A higher tooth will offer higher top-speed and less acceleration. 17tooth ASCC8807, 18tooth ASCC8808. AXY 5/28/94 ir/le &