YZF R6

Key Features:

Light, powerful and bristling with knowledge gained from years of racing, the YZF-R6 is the most advanced production middleweight motorcycle Yamaha - or anybody else - has ever built.
The YZF-R6 was the first production motorcycle with a fly-by-wire throttle system—for flawless response under all conditions.
Straight frame concept: developed from the Yamaha M1 GP machine, the YZF-R6’s steering head, swingarm pivot and rear axle all lie in a straight line—for unsurpassed handling—with an inline four-cylinder engine designed for optimal layout and mass centralization.
Slipper-type back torque-limiting clutch greatly facilitates braking/down shifting from high speed.
Formula 1-style air management presents very small frontal area for excellent aerodynamics; ram-air induction ducts cool, high-pressure air through the steering head for optimal combustion, more horsepower and enhanced engine cooling.
The YZF-R6 is the AMA Supersport Champion in its rookie season.

Engine:

Compact, lightweight 67 x 42.5mm 599cc DOHC 16-valve liquid-cooled inline four-cylinder features titanium valves, 12.8:1 compression and compact combustion chambers for awesome, lightning-quick response.
YCC-T (Yamaha Chip Controlled Throttle) uses a powerful ECU and multiple sensors to provide perfect, smooth engine response and optimal power whenever the throttle is twisted, under all conditions.
Twin-injector fuel injection: shower-type injectors above each intake funnel help achieve optimum fuel atomization at high rpm.
Back torque-limiting slipper clutch greatly facilitates braking and downshifting from high speed. Close-ratio six-speed transmission delivers seamless power and maximum acceleration.
Despite the increased bore, piston and pin weight has been reduced for more power and smoothness; 1mm smaller main journals reduce friction while 1mm larger connecting rod journals increase performance.
Compact slant-block engine design uses widely triangulated gearbox shafts to make the GP-derived, straight frame concept work; optimum weight distribution and excellent handling are the result.
GP-style titanium muffler contributes to mass centralization, and contains EXUP, and an O2 sensor and catalyzers for a broad powerband and spot-on injection.
Linerless, direct-plated ceramic-composite cylinder bores mean greater heat dissipation for consistent power delivery and reduced friction—also a narrow engine.
Cool magnesium valve and engine covers are light and stylish. Curved radiator with twin-ring cooling fans keeps everything cool.
Direct ignition coils, dual-electrode spark plugs and high-output magneto deliver extremely accurate, reliable firing.