RB Concepts truck engine fits most monster trucks that use .21 - .25 cu in (3.4 - 4.1cc) engines. Compatible with the HPI Roto Start electric starting system, (standard backplate is available as an option). Ten fin orange colored aluminum cooling head. Aluminum connecting rod, grooved for better lubrication and reliability. "ABC" cylinder & piston set, "A"luminum piston,"B"rass cylinder liner, that is "C"hrome plated. Nylon body slide valve carburetor with steel base. This package inclues RB Concept TM728 5-Port Monster Truck Engine. with glow plug, slide valve carburetor, exhaust gasket and instructions.

Fuel: Car blend with 10%-25% nitro content
Tuned Pipe and Manifold depending on vehicle
Glow plug wrench and track equipment