This is the glow powered, radio controlled Nitro Pro Stock Car Kit from RJ Speed. FEATURES: Chassis: Fiberglass, 0.06" (1.5mm) thick Engine Mounts: Adjustable aluminum Axle Gear: 32 pitch Rear Axle: Solid, constructed of stainless steel Tires: O-ring front, Rear foam 1.5" (38mm) wide with six spoke black wheels Body: Clear lexan Fuel Tank: 1oz (29.6cc), with rear mount INCLUDES: Nitro Pro Stock Kit with body, 32P axle gear, wheels, fuel tank hex wrenches, window mask and instructions REQUIRES: Engine: .12 -.18 cu in (2.0 - 2.9cc) short shaft recommended **RJ Speed #5145 Engine Mount Spacers, RJSC5145 if using engine with pull starter Clutch Assembly: to match selected engine Radio: 2-channel with two standard servos Misc Items: Air filter, muffler, fuel tubing, tools and track equip. SPECS: Body; Length: 18" (457mm) Width: 6.9" (175mm) Height: 4" (102mm) COMMENTS: To upgrade from bushing to ball bearings, order; Qty. Size Qty. Bearing Set 4 1/8 x 5/16" Flanged 2 DTXC1403 2 1/4 x 3/8" Flanged 1 DTXC1433 cnh 1/5/09 ir/jxs