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Key Features:
- 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 ?rst 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.
Engine:
- Short-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 cylinder sleeves ensure great heat dissipation for consistent power delivery and reduced friction.
- Close-ratio six-speed gearbox with triangulated shaft layout for great strength, compactness, and quicker acceleration.
- Ramp-type slipper clutch makes braking from speed into tight corners while downshifting smoother and therefore faster.
- Titanium underseat exhaust system (with stainless steel midpipe and catalyst) provides excellent cornering clearance and a broad, seamless powerband.
- 13-percent greater radiator capacity and an aluminum liquid-cooled oil cooler maintain stable operating temperature.
- Direct ignition coils, dual-electrode spark plugs and high-output magneto deliver extremely accurate, reliable firing.
- AC generator behind cylinder block produces a narrow engine with excellent cornering clearance.
Chassis/Suspension:
- A Deltabox frame tuned for optimal flex carries the lay-down four-cylinder stressed-member style for great handling and efficient aerodynamic penetration.
- A truss-type swingarm is extremely strong and tuned for optimal traction and feedback.
- Dual 310mm front disc brakes; new, six-piston radial-mount calipers and Brembo radial-pump front master cylinder with adjustable lever deliver amazing braking power and feel.
- Fully adjustable KYB inverted telescopic front fork with 43mm tubes has been revalved to complement other chassis changes.
- Piggyback rear shock now offers both high- and low-speed compression adjustability, rebound damping and a new, twist-style spring preload adjuster.
- Light, five-spoke wheels enhance acceleration, deceleration, handling and suspension action.
