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Lot 303: 2004 Borile 500cc B500R

Sale of Collectors' Motorcycles, Bonhams & Butterfields (12 November 2005)

The creation of Italian engineer Umberto Borile, the first Borile motorcycle was displayed at the Milan Show in 1999. Although inspired by the classic four-stroke singles of yesteryear, Borile’s take on the traditional ‘thumper’ is thoroughly modern in conception. Somewhat surprisingly, Borile chose to develop his own engine for the project, using the cylinder head, cylinder, piston and crankshaft from the world-championship winning Italian GM speedway engine. Although the GM motor is state-of-the-art, incorporating a four-valve ’head, ceramic cylinder coating and electronic ignition, speedway engines run total-loss lubrication systems and need only two speeds in the gearbox, so Borile set about making his own crankcase to incorporate pressurised oiling and an integral five-speed transmission.

The minimalist frame is constructed of aluminium tubing, in no small part contributing to the Borile’s total weight of an anorexic 230lbs. The rear suspension is conventional mono-shock, front forks are 41mm Ceriani upside-downers and the brakes Brembos. Add an aluminium fuel tank, vestigial seat, handlebars and controls and that’s about all there is to a Borile. The end result is surely one of the coolest looking bikes around, obviously the product of a passionately committed motorcyclist rather than a committee of corporate bean counters. The original B500CR has since spawned a family of derivatives as well as 50cc Cross Junior and B651 moto-cross models.

This Borile B500R is believed to be the only one of its kind in the USA.

Lot Details
Auction Sale of Collectors' Motorcycles
Bonhams & Butterfields, Petersen Museum, Los Angeles, CA
Lot Number303
Outcome NOT SOLD
Hammer Price-
Hammer Price (inc premium)-
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Engine - cylinders
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