Mugen Seiki Racing is proud to introduce the MRX-4X 1/8 On Road Competition car. This kit is an upgraded version of the World Champion winning MRX4. The MRX-4X has new suspension parts, and all the high-end options that where sold separately now all in one kit.

Rear Upper Arm (2mm Shorter)
Brake Bracket & Rear Upper Arm Mount for short rear upper arm
Rear upright (Adjustable wheel offset)
Front bulkhead. You can change the tension of the belt (5 different positions)
Rear bulkhead. You can change the tension of the belt (5 different positions)
New Eccentric Hub
5mm New Rear Lower Arm Mount
New Battery Holder (FRP) & Chassis
New Long rear body Mount Arm & Rear Body

This kit includes MRX4X rolling chassis with oil-filled shocks, mounted and trued foam tires on plastic wheels, 250cc fuel tank, full ball bearing set, decals, and building instructions.

Radio: 2-Channel with 2 Servos
Radio Batteries: (8) AA size
Engine: .21 rear exhaust with pilot shaft and tuned exhaust
Glow Starter: 1.2 volt
Misc. Items: Fuel bottle, building and track equipment
Fuel: 2-cycle glow fuel with 10%-15% nitromethane, 16% lubricant-
Most of the fuels we carry meet or exceed the lubricant content required for optimum performance and maximum engine life. In the past, the conventional lubricant content used in fuel was 18%. But with new advanced technologies, fuels like Red Alert and O'Donnell for example, have a better quality of lubricants even though the percentages of lubricant content are lower. These high-tech lubricants provide exceptional cooling and protection.