2008 Yamaha YZF

2007 Yamaha YZF-R1Key Features May Include Light, powerful and packed with trickle-down MotoGP technology, the YZF-R1 is the most advanced Open-class production motorcycle ever built.The YZF-R1 uses the YCC-T fly-by-wire throttle system for flawless response under all conditions. Inline four-cylinder engine is the most powerful, tractable R1 powerplant ever, thanks partially to the world’s first electronic variable- length intake funnel system.Slipper-type back torque-limiting clutch greatly facilitates braking/downshifting from high speed. Aluminum Deltabox frame and swingarm take Open-class handling to the next performance level.Six-piston radial-mount front brake calipers and 310mm discs generate the kind of braking power a bike like the R1 requires.Features & BenefitsEngineShort-stroke 998cc DOHC, 16-valve, liquid-cooled inline four-cylinder engine produces more tractable power than ever.Yamaha Chip Control Throttle controls a 32-bit ECU fuel injection system for super-responsive, smooth, instantaneous power delivery.Yamaha Chip Control Intake electronically adjusts intake funnel length between either 65 or 140mm for an amazingly broad, smooth powerband.Two-piece ergonomically designed fuel tank carries fuel in the rear section, for good centralization of mass, while the front half contains a Ram-Air-fed airbox for increased power.Lay-down-design cylinder head optimizes weight distribution, straightens intake tracts for improved cylinder filling and allows frame to pass over instead of around the engine for great strength and a narrow chassis.Closed-deck cylinder block increases strength and allows a narrow engine in spite of big, 77mm bores.Narrow-angle four-valve combustion chambers produce a highly efficient 12.7:1 compression ratio; 31mm titanium intake valves and 25mm exhausts controlled by new, high-lift cams flow plenty of air.Light and strong nutless connecting rods with fractured big ends produce a quick-revving engine with excellent high-rpm durability.High silicon-content ceramic-composite cy