This engine is not broken-in.Intended for buggies but also well suited for truggies, the BLOK 21bM engine provides the smooth, linear power band and excellent fuel mileage required at the highest...
TKR1723 – Complete Carburetor (21aP/21bM) This is the complete 21J carburetor assembly that comes with the Blok 21aP and 21bM engines. Package Contents1ea Carburetor Assembly
Product DescriptionTKR1737 – Engine Screw Set (21aM/aP/bM)This screw set contains the head and cover plate screws for a single 21aM, 21aP, or 21bM engine. Package Contents4ea Backplate...