For the 2005 model year, Austrian motorcycle manufacturer KTM Sportmotorcycle AG released two models of its SMR track bike: the SMR 450 and SMR 525. Each model is named after the rounded-up estimation of its engine displacement. KTM gave the 2005 KTM SMR 450 a manufacturer’s suggested retail price (MSRP) of $7,498; the MSRP for the SMR 525 is $500 higher.
The engine on each 2005 KTM SMR is a four-stroke, liquid-cooled, single-cylinder unit, which is linked with a six-speed manual transmission and chain drive to form the bike’s powertrain. Using a single overhead camshaft valve train, KTM placed four intake valves on the engine’s cylinder, and a 41-millimeter Keihin carburetor fuels the unit. A manual kick starter was installed on each 2005 SMR for ignition.
The engine on the SMR 450 model of the 2005 KTM SMR displaces at 449.4 cubic centimeters (cc), while the engine on the SMR 525 displaces at 510.4 cc. While all 2005 SMR engines have a bore of 95 millimeters (3.74 mm), the varies: the SMR 450 engine is measured at 63.4 mm (2.5 inches), while the stroke of the SMR 525 engine is 72 mm (2.84 inches). The compression ratio is 12 to 1 on the former and 11 to 1 on the latter. For fuel, each 2005 KTM SMR has a tank that can hold up to 1.9 gallons (7 liters).
Each 2005 KTM SMR uses an all-wheel disc brake system, which gives it greater braking power than if it had all-wheel drum brakes or front-disc-brake rear-drum-brake layout. The disc brakes on the 2005 SMR consist of a 12.2-inch (310-mm) disc at the front; and a smaller, 8.7-inch (220-mm) disc at the back. The wheels on the bike are made of aluminum and measure at 17 inches; each one is wrapped in a tubed tire. The suspension on the bike consists of a 1.9-inch (48-mm) inverted fork and twin-sided WP swing arm with rear absorber, implemented for smooth and controlled driving.
Constructed out of a frame made from chromium and molybdenum for lightness yet sturdiness, the 2005 KTM SMR is significantly padded. In addition to the customary front and rear fenders, the bike had side covers, hand guards and fork guards: all made of plastic. The 2005 SMR was then painted orange and finished off with a decal kit. A black one-piece vinyl seat on the 2005 KTM SMR provides enough space for the driver. Below the bike was a kick stand, designed for parking the bike.
Each 2005 KTM SMR had a wheelbase of 58.4 inches (1,481 mm), and the seat sits relatively high on the bike: 33.7 inches (855 mm) to be exact. The dry weight of each 2005 KTM SMR is 239.2 lbs. (108.5 kilograms) for the SMR 450. The SMR 525 is a bit heavier, with a dry weight of 241.4 lbs. (109.5 kg).
Ideal for track racing, the 2005 KTM SMR is blessed with nifty handling, strong braking power and lightness in weight. Small wonder the bike is popular at motor racing circuits in places like Australia, Spain, France, China and Portugal.