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2005 Yamaha YZF-R1 Features & Benefits
Engine:
Short-stroke 998cc, DOHC, 20-valve, liquid-cooled, inline 4-cylinder engine now produces 180 horsepower (with Ram-Air)at an
amazing 12,500 rpm.
Dual-valve fuel injection system uses motor-driven secondary throttle valves and 32-bit ECU for super-responsive, instantaneous power delivery.
Two-piece ergonomically designed fuel tank carries fuel in the rear section, for good centralization of mass, while the front half contains a new, Ram-Air-fed airbox for increased power.
Lay-down design cylinder head– 40 degrees forward instead of 30– 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 reduces cylinder pitch, allowing a narrow engine in spite of big, 77mm bores.
Narrower-angle 5-valve combustion chambers produce a highly efficient 12.3:1 compression ratio. Bigger valves and intake cams with more lift and duration flow more air.
Carburized connecting rods with perfectly mated big ends produce a quick-revving engine with excellent high-rpm durability.
High silicon-content ceramic-composite cylinder
sleeves ensure greater heat dissipation for consistent power delivery and reduced friction.
Strong, yet lightweight clutch and close-ratio 6-speed gearbox with triangulated shaft
layout for increased strength, compactness and quicker acceleration.
Titanium underseat exhaust system (except for stainless steel midpipe with catalyst) contains a new titanium EXUP
valve for a broad, seamless powerband.
High-efficiency curved radiator and an aluminum liquid-cooled oil cooler maintain stable operating temperature.
Direct
ignition coils, new dual-electrode spark plugs and high-output magneto deliver more reliable firing.
AC generator moves behind cylinder block for a narrow engine with excellent
cornering clearance.
Chassis/Suspension:
Aluminum Deltabox main frame rails pass over the engine instead of around it, resulting in an extremely strong structure
that's also remarkably compact and narrow.
Overall frame width is reduced from 17.8 to 15.6 inches, which produces more comfortable ergonomics as well as more efficient aerodynamic
penetration.
Controlled Fill die cast, truss-type swingarm is very strong and long for optimal traction and feedback.
3.8 inches of trail combines excellent
maneuverability and high-speed tracking.
Controlled Fill die cast, detachable aluminum subframe is light, strong and allows easy rear shock access.
Dual 320mm front
disc brakes, lighter/stronger, forged one-piece radial-mount calipers and Brembo radial-pump front master cylinder with adjustable lever delivers great braking controllability.
Fully
adjustable KYB inverted telescopic front fork with 43mm tubes provides 4.7 inches of travel.
Piggyback rear shock gives 5.1" of wheel travel, full adjustability and a
lightweight, accessible aluminum preload adjustment collar.
Light, 5-spoke wheels are enhance acceleration, deceleration, handling and suspension action.
Underseat
titanium exhaust system is lightweight, reduces drag, enhances mass centralization, allows 56-degrees of cornering clearance–and adds to R1’s predatory appearance.
Additional Features:
Two multi-reflector and two projector “Gatling-beam” headlights provide great illumination and distinctive style.
Adjustable LCD illumination
and multi-function digital gauges: adjustable shift light, odometer, dual tripmeters, water temperature, air temperature, full-time clock, lap timer and large 15,000 rpm analog tachometer.
Aggressive bodywork with twin Ram-Air intakes for increased engine performance.
LED taillight is light, bright and highly efficient.
Sticky 120/70-ZR17 and
190/50-ZR17 radial tires for incredible grip and precise handling.
Forged footpegs are extra durable and light.
Extensive use of hollow bolts and lightweight
fasteners help trim overall weight.
8.2 AH battery is more compact and light.
California emission compliant.
Durable #530 O-ring-sealed drive chain.
Standard toolkit located in convenient storage compartment under passenger seat.
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