RB PRODUCTS TM728 .28/5-Port MONSTER TRUCK ENGINE

This is the RB Concept TM728 5-Port Monster 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