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 Harley Davidson - 750 KR TT
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Capacity : 750
Model : KR TT
Production : 1950 - 1965
Category : (R) Racing


750KR-TT - 1965

The Harley-Davidson KRTT 750 is an American made competition motorcycle built between 1952 and 1977. It has side-valve V-twin, 2 valves per cylinder 750 cc engine; with a top speed of 149 mph (239.8 km/h).


Since 1941, Harley-Davidson Motor Corporation has provided racers with purpose-built race machines. The WR had a tank shift with a foot clutch and separate engine and transmission. The 1952 KR was of unit construction with a foot operated shift and hand clutch. Both of these models were side-valve flatheads. The mid-1970 XR was of overhead valve design and continues through today. Harleys have taken all corners and continue to dominate the dirt track competition.

Man and Machine

The list of men associated with the WR/KRJXR models is a who's who of American racing. Names like Sifton, Arena, Huber, Lawill, Andres, Leonard, Resweber, Markel, Roeder, Reiman, Peel, Breisford, Scott, Springsteen, Tilley, Carr, Parker, O'brien, and many others. Some of these men built careers upon the special knowledge that made the Harleys fast, designing modified parts for the privateer.

High Banks of Daytona

Cal Rayborn is on his way to winning the 1968 Daytona 200. The young, talented rider would win Daytona again in 1969. Harley-Davidson's XRTF road racer, basically the XR motor in a KR chassis, had been developed as far as it would go by 1973. Rumors persist that Harley will return to pavement racing with a competitive machine, and nobody should count them out.


Engine: side-valve V-twin layout, 750 cc (2.75x3.18251n.), 2 valves per cylinders

Power output: approx 60 hp

Fuel system: dual Tillotson carburetor

Wheelbase: 54 in.

Suspension: (front) Ceriani telescopic; (rear) dual shock-swing-arm

Brakes: (front) drum; (rear) drum or disc

Weight: 325 lb

Maximum speed: approx 149 mph

Cal Rayborn and the Harley-Davidson KRTT averaged over 101 mph in 1968, to win the Daytona 200.

Le fichier Moto Passion réalisé par François-Marie Dumas réunit près de deux mille photos accompagnées d'un historique très complet des machines présentées.
Il sera progressivement mis à jour ici et toute information complémentaire est la bienvenue sur info@moto-collection.org.

Cette documentation unique, qui constitue sans doute l'encyclopédie la plus exhaustive jamais écrite sur l'histoire de la moto, a été réalisée avec l'assistance de nombreux spécialistes dont principalement Didier Ganneau, Christophe Gaime, Mick Woollett, Jean Goyard, Bernard Salvat, Christian Rey, Yves Campion, Helmut Krackowizer, Michael Dregni, Michel Montange, etc. que je remercie ici.

Disponible sur demande :
- Les fiches originales sur papier
- Les photos et archives signées de mon nom en haute définition ou les documents originaux.
Me contacter sur info@moto-collection.org pour les conditions et droits d'utilisation.