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Yamaha YZF-R6S is a street bike. It’s cheaper than the race bike version Yamaha YZF-R6. The R6S is designed for street riding with more power down low and in the mid range.

Price: $8,690 – $8,790

Key Features:

• Light weight, big horsepower, razor-sharp handling and a comfortable cockpit make the R6S an outstanding do-it-all sportbike.
• Competition-bred suction-piston-type fuel injection with 38mm throttle bodies features short intake ports and a special vacuum-controlled intake system to ensure instant throttle response all the way up to the 15,500-rpm redline.
• The YZF-R6S achieves fuel economy up to an estimated 42 mpg** with a fuel tank that holds 4.5 gallons of gas.

Engine:

• Ultra-compact, lightweight, 600cc liquid-cooled, DOHC 16-valve inline four-cylinder.
• Direct ignition coils, dual-electrode spark plugs and high-output magneto deliver extremely accurate, reliable firing.
• Compact slant-block engine design uses stacked gearbox shafts to create a balanced weight distribution.
• Ram-Air Induction System delivers cool, high-pressure air for optimal combustion and greater horsepower.
• Lightweight forged pistons on carburized connecting rods for superb strength and reduced reciprocating mass.
• Linerless, ceramic-composite cylinder bores mean greater heat dissipation for consistent power delivery and reduced friction.
• Close-ratio six-speed transmission delivers seamless power and maximum acceleration.
• Three-axis gearbox design stacks input/output shafts to keep overall engine size to super-compact dimensions.
• Curved radiator follows the contour of the frame and bodywork for an ultra-sleek look and excellent cooling performance.
• One-piece cylinder and crankcase assembly provides superior engine rigidity and light weight.
• Compact, large-capacity clutch delivers consistent, fade-free performance.
• Large-capacity water pump, liquid-cooled oil cooler and twin ring-type radiator fans ensure optimal engine cooling efficiency.
• Four-into-two-into-one aluminum exhaust optimizes engine performance, reduces overall weight and tucks in high for maximum lean angle.

Chasis/Suspension:

• Light and carefully tuned Deltabox III frame and Controlled-Fill swingarm are key to the R6S’ class-leading handling performance and feel.
• Fully adjustable 43mm fork reinforces R6S’ main strength: precise handling. Forged lower triple clamp also increases rigidity.
• Fully adjustable (preload, compression and rebound damping) piggyback rear shock with 4.7” of travel delivers exceptional rear wheel tracking and stability.
• Removable CF die cast rear subframe is light and strong.
• Super-light five-spoke 17-inch wheels reduce unsprung weight; a special casting technique makes the rim section light, not to mention wickedly cool-looking.
• Light, 298mm front brake discs, four-piston calipers and radial master cylinder provide unsurpassed braking power and feel.

Additional Features:

• Durable, lightweight, aluminum clip-on bars provide optimal vibration damping.
• Narrow 4.5-gallon fuel tank provides excellent rider ergonomics and aggressive seating position.
• Multifunction digital and analog instrumentation features: programmable shift light, digital speedometer, analog tachometer, dual tripmeters with miles-on-reserve function, odometer, water temp gauge and lights for neutral, high-beam, low-fuel and turn signals.
• Dual Gatling beam 60-/55-watt multi-reflector headlight features a sleek profile for superb aerodynamics and visibility.
• Dual LED taillight design provides excellent visibility and a sleek profile.
• Standard toolkit located in convenient storage compartment under passenger seat.

Specifications:

Engine
Type	600cc liquid-cooled inline 4-cylinder; DOHC, 16 valves
Bore x Stroke	65.5mm x 44.5mm
Compression Ratio	12.4:1
Fuel Delivery	Fuel Injection
Ignition	Digital DC-CDI
Transmission	6-speed; multiplate wet clutch
Final Drive	Chain
Chassis
Suspension/Front	43mm fork; fully adjustable, 4.7-in travel
Suspension/Rear	Single shock; fully adjustable, 4.7-in travel
Brakes/Front	Dual 298mm floating disc, 4-piston calipers
Brakes/Rear	220mm disc; single-piston caliper
Tires/Front	120/60-ZR17
Tires/Rear	180/55-ZR17
Dimensions
Length	79.7 in
Width	27.1 in
Height	42.9 in
Seat Height	32.3 in
Wheelbase	54.3 in
Rake (Caster Angle)	24.0°
Trail	3.4 in
Fuel Capacity	4.5 gal
Fuel Economy**	42 mpg
Wet Weight	410 lb

Source

Yamaha’s YZF-R6 is a 600 cc (36.6 cu in) sport bike, first introduced in 1999, updated in 2001, 2003, 2006, 2008 and revised in the years in between.

Yamaha also created a cheaper street version Yamaha YZF-R6 .

Price: $9,990 – $10,190

Key Features:

• Light, powerful and bristling with knowledge gained from years of racing, the YZF-R6 is the most advanced production 600cc 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.
• YCC-I, Yamaha Chip Controlled Intake, is used on the R6 to vary intake tract length for excellent cylinder filling and a broader powerband. On the higher revving R6, its benefits are even more pronounced.
• Slipper-type back torque-limiting clutch greatly facilitates braking/downshifting from high speed.
• The YZF-R6 achieves fuel economy up to an estimated 40 mpg** with a fuel tank that holds 4.6 gallons of gas.
• The Engine Control Unit (ECU) has remapped YCC-T settings to optimize power output in each gear, to achieve smooth, linear power delivery out of the turn, with excellent overall drivability.

Engine:

• Compact, lightweight 67 x 42.5mm 599cc DOHC 16-valve liquid-cooled titanium-valved four-cylinder has a compression ratio of 13.1:1, for great response. Domed pistons with valve cutouts produce a compact combustion chamber.
• Fuel injection mapping for the YCC-T—Yamaha Chip Controlled Throttle dual-injector system complements the high compression ratio for great throttle response and reduced engine braking.
• YCC-I—Yamaha Chip Controlled Intake electronically varies intake funnel length for an amazinglyf broad, smooth powerband.
• A magnesium subframe removes weight from the rear of the motorcycle for increased mass centralization.
• Fork height adjustability and rear ride-height adjustment accommodates a great range of riders and tires.
• YCC-T 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.
• Slipper-type back torque-limiting clutch greatly facilitates braking and downshifting from high speed. Close-ratio six-speed transmission delivers seamless power and maximum acceleration.
• GP-style titanium muffler contributes to mass centralization and contains EXUP® for a broad powerband, spot-on injection and emissions compliance.
• Linerless, direct-plated ceramic-composite cylinder bores mean greater heat dissipation for consistent power delivery and reduced friction.
• Cool magnesium valve and engine covers are light and stylish.
• Direct-ignition coils, dual-electrode spark plugs and high-output magneto deliver extremely accurate, reliable firing.

Chasis/Suspension:

• Deltabox aluminum frame incorporates GP thinking in terms of engine positioning and rigidity for the ultimate in 600-class handling.
• A die-cast swingarm pivots high in the frame, for increased antisquat effect and mid-corner stability. TZ-type chain adjusters ease rear tire changes.
• Four-way adjustable (preload, high-speed compression, low-speed compression and rebound damping) inverted fork with 41mm tubes increases freedom in setting up for street or track use; soak up the bumps and resist bottoming when braking.
• Four-way adjustable (preload, high-speed compression, low-speed compression and rebound damping) piggyback rear shock delivers exceptional rear wheel tracking and stability.
• Dual 310mm front disc brakes use forged one-piece radial-mount calipers and radial-pump front master cylinder with adjustable lever for astounding braking power and feel.
• The casting technique for the five-spoke 17-inch wheels makes the rims light and strong, not to mention wickedly cool-looking.

Additional Features:

• Built-in lap timer is controlled by a right handlebar switch.
• Multifunction digital and analog instrumentation features: programmable shift light, digital speedometer, analog tachometer, dual tripmeters with miles-on-reserve function, odometer, water temp gauge and lights for neutral, high beam, low fuel and turn signals.

Specifications:

Engine
Type	599cc liquid-cooled inline 4-cylinder; DOHC, 16 titanium valves
Bore x Stroke	67.0 x 42.5mm
Compression Ratio	13.1:1
Fuel Delivery	Fuel Injection with YCC-T and YCC-I
Ignition	TCI: Transistor Controlled Ignition
Transmission	6-speed w/multi-plate slipper clutch
Final Drive	Chain
Chassis
Suspension/Front	41mm inverted fork; 4-way adjustable, 4.7-in travel
Suspension/Rear	Single shock; 4-way adjustable, 4.7-in travel
Brakes/Front	Dual 310mm floating disc; radial-mount 4-piston calipers
Brakes/Rear	220mm disc; single-piston caliper
Tires/Front	120/70-ZR17
Tires/Rear	180/55-ZR17
Dimensions
Length	80.3 in
Width	27.6 in
Height	43.3 in
Seat Height	33.5 in
Wheelbase	54.3 in
Rake (Caster Angle)	24°
Trail	3.8 in
Oil Capacity (with oil filter change)	3.6 qt
Fuel Capacity	4.6 gal
Fuel Economy**	40 mpg
Wet Weight	414 lb
Other
Main Jet	Not Applicable
Main Air Jet	Not Applicable
Jet Needle	Not Applicable
Needle Jet	Not Applicable
Pilot Air Jet 1	Not Applicable
Pilot Outlet	Not Applicable
Pilot Jet	Not Applicable
Primary Reduction Ratio	85/41 (2.073)
Secondary Reduction Ratio	45/16 (2.813)
Gear Ratio – 1st Gear	31/12 (2.583)
Gear Ratio – 2nd Gear	32/16 (2.000)
Gear Ratio – 3rd Gear	30/18 (1.667)
Gear Ratio – 4th Gear	26/18 (1.444)
Gear Ratio – 5th Gear	27/21 (1.286)
Gear Ratio – 6th Gear	23/20 (1.150)
Warranty	1 Year (Limited Factory Warranty)

Source

Wikipedia