1977 -  Marty Tripes #558 & Rich Elerstadt #11 (Factory Test Rider)

The MX-360 Factory Race Motorcycle was introduced in 1976. The main reason they race on this 341cc experimental engine, was because Harley-Davidson miss de dateline for the registration for the AMA 250cc motocross class competition of 1976. They have no choice but to enter in the open class competition motocross race with a large displacement engine. That H-D engine was the 341cc Factory Race engine call the MX-360.

The 1976 MX-360 Factory Race Motorcycle consists of mainly must popular and best brand of aftermarket parts. From the custom U.S. made Champion MX frame, then later a C&J MX frame, Preston Petty fenders and K&N bars. Italian Aermacchi engine, French wheels hub to German Magura controls and throttle, to Japanese made Yokohama Super Diggers tires and Kayaba suspension. In summary the 341 experimental was a true experiment of many best part from all over the world.

In 1977 Harley-Davidson Race Program tested a prototype SX-350 engine with race modifications for the Factory Motocross Competition Race Program and the Factory Dirt Track Competition Race Program. These Prototype Race Engines have a SX-350 VIN number production number from 10001 to 10007, with a H8 production year.

PROTOTYPE FUEL TANK FOR LONG DISTANCE - FOR THE MX-360

NOVEMBER 1977 CYCLE NEWS HARLEY'S 360 PROTOTYPE MOTORCROSSER

OCTOBER 1976 MX-360 FACTORY RACE MOTORCYCLE

1976 MX-360 Rex "Rocket" Staten #22 Racing the Prototype Factory Race Engine

1976 MX-360 HARLEY-DAVIDSON EUROPE DEBUT

REX STATEN FACTORY RIDER & JOHN INGHAM TEAM MANAGER & SENIOR RACE PROJECT ENGINEE

Rex ¨Rocket¨ Staten #31 Race Motorcycle
Martin Tripes #558 Factory Race Motorcycle

LEFT MX-360 FACTORY RACE ENGINE & RIGHT MX-250 FACTORY RACE ENGINE

MX-360 FACTORT RACE ENGIEN