Kit includes: 35mm cylinder, 35mm piston, piston ring, piston pin, pin washer set, pin bearing, circlips, cylinder gasket, CMR7H spark plug, and choice of 2mm stroker crankshaft (30mm stroke, up from 28mm stock stroke). The squish on the cylinder has been pre-machined to accept the 2mm stroker using only the standard .020" cylinder gasket. Provides HUGE increases in engine power, allowing you to use taller gearing for more top speed! This high-performance product requires 91 octane (using the R+M/2 octane rating method) or higher fuel, and comes without warranty. Fits G23LH / G230RC / G260RC / CY23RC / CY26RC / CY27RC / CY29RC engines.

For R/C: Fits all vehicles using the engines listed above. Fits a wide variety of 1:5 and 1:6 R/C cars, planes, boats, and helicopters. For cars - fits FG: Marder, Leopard, Monster Beetle, Monster Truck, Stadium Truck, Pajero, etc. Also fits Firehammer, XTM, Carson Attack, HPI Baja 5b, and other large scale RC cars.