150bhp Buell revealed

Buell is to offer a 150bhp production racing version of its XBR Firebolt.

The privateer 2007 bike takes the company full circle. Buell started life with the 1983 RX750 Harley-based racer. It is now part of Harley-Davidson.

The new bike uses a modified XB Thunderstorm 1339cc (103.6mm bore x 79.4mm stroke) air/oil-cooled V-twin motor and makes 150bhp at the crank, says Buell.
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It has dual-downdraft 62mm throttle-body electronic fuel injection system and a ram-air intake system running through a carbon fibre fairing.

An engine modification kit will be available to help it conform to a wide range of race classes. Only 50 will be made and sold at a list price in the US of $30,995 (£17,400).

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Buell XBRR features*:

1339cc (81.7 cid) Thunderstorm Powertrain:

4.080 inch (103.6 mm) bore and 3.125 inch (79.4mm) stroke

12.5:1 compression ratio

Dual 62 mm down-draft fuel-injection throttle bodies

WAVE-analyzed header and mass-centralized muffler

150+ peak engine horsepower at 8000 rpm (per SAE J607)

100 ft. lbs. peak engine torque at 6500 rpm (per SAE J607)

Black 6-Spoke Cast Magnesium Racing wheels:

Front: 3.5 inch (88.9mm) x 17 inch (431.8mm) wheel with 120/70R-17 tire

Rear: 5.5 inch (139.7mm) x 17 inch (431.8mm) wheel with 190/55R-17 tire

Buell ZTL2 reversed rotor front brake with eight-piston Nissin caliper

Ram Air system integrated with full racing fairing

Carbon fiber bodywork

43mm Ohlins adjustable front suspension with inverted forks

Ohlins fully-adjustable rear suspension with coil-over monoshock with remote reservoir

55-degree lean angle (hard contact)

30.5-inch (775 mm) seat height

21-degree rake and 3.4-inch (86 mm) trail

Cast-aluminum swingarm with billet axle adjustment system

Center position wheelbase 52.8 inches (1341 mm)

Range wheelbase 51.8 – 53.8 inches (1315 mm – 1367 mm)

Buell Racing paint scheme

*Taken from Buell’s press release. Image from Buell.