![]() The 450 has been built for the S2 racing class and is impressive enough, but its the SXV550 you want: Accelerate out of a slow corner and the 550 surges forward, not violently like a big single, but progressively, controllably and with devastating potency. They’re also more powerful, quieter and smoother than a comparable single, thanks to advanced electronics and fuel injection – previously unheard of on a single. Aprilia say they’ll need new pistons and a shim check after 60 hours of racing (although you can expect longer service periods for normal recreational riding).īoth the 450cc and 550cc motors are as small and light as a supermoto’s usual single-cylinder engine. Being race-focused machines, the engines have a strict service schedule. Both models are powered by highly-tuned, high-revving race motors, with the 450 kicking out a claimed 60bhp at 11,500rpm, and the SXV550 70bhp at 10,500rpm at the crank. There are twin slash cut underseat pipes and a multi-function digital display, 48mm upside down forks with high and low-speed compression adjustment, radial front brakes, slinky bodywork and an RSV-like diamond-shaped rear light.īut the SXV’s real party piece is its liquid-cooled engine. It starts with a beautifully-crafted cast aluminium/steel trellis mixed frame and sexy swingarm.
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