This is a .21 Turbo/Hyper with pull start Ofna engine. This engine is used to power 1/8th scale R/C kits. *NOTE* Some kits require extra items to install and operate this engine. Check kit requirements for these parts. FEATURES: Oversized flow-through Black anodized cylinder head ABC construction (Aluminum piston with a chromed brass cylinder) Rear exhaust Ball Bearing-supported crankshaft Slide Valve rotatable Carburetor Needle valve adjusted by a screwdriver Pilot Shaft INCLUDES: One .21 Ofna Hyper engine w/Slide Valve Carburetor One Brass collet (these hold flywheel in place) One Header with seal, clamp and spring One Running and parts information sheets One Hyper .21 Decal sheet SPECS: Displacement: 3.49cc (.21 cubic inches) Bore: 16.26mm Stroke: 16.8mm Weight: 350g Length: 85mm (3.355") from front of front bearing to back of pull start. Width: 31mm ( 1.21") the width neglecting the mounting flanges 36mm (1.43") distance across crankcase measured between the centers Height: 113mm (4.428") (contact Ofna for more technical information). REQUIRES: -Fuel with 5%-30% Nitromethane (20% is recommended) and a lubricant content of 18% or more -Muffler -Glow plug (long plug without idle bar) 05-24-02kh ir/kh