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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

Yamaha launched the YZF-R1 after redesigning the Genesis engine to offset the crankshaft, gearbox input and output shafts and this “compacting” of the engine yielded a huge dividend in that the total engine length was now very short. This allowed the wheelbase to be shortened significantly which resulted in much quicker handling and an optimized center of gravity.

In late 2008 Yamaha announced they would release an all new R1 for 2009. The new R1 takes engine technology from the M1 Moto GP bike with its crossplane crankshaft, the first ever production motorcycle to do so. Crossplane technology, puts each connecting rod 90° from the next, with an uneven firing interval of 270°- 180°- 90°- 180°.

Price: $12,390 – $12,490

Key Features:

• In the supersport liter class, there’s always lots of talk about power. You expect that. What you wouldn’t have expected – until now – is a radically superior way to deliver that power. Introducing the 2009 YZF-R1, the first ever production motorcycle with a crossplane crankshaft. Crossplane technology, first pioneered in MotoGP racing with the M1, puts each connecting rod 90° from the next, with an uneven firing interval of 270°- 180°- 90°- 180°. This all but eliminates undesirable inertial crankshaft torque, which allows the engine’s compression torque to build smoothly and provide a very linear power delivery out of the corners. It’s a feeling that’s simply unmatched, like having two engines in one: the low-rpm torquey feel of a twin with the raw, high-rpm power of an inline 4. In fact, the new YZF-R1 is not a continuation of existing supersport development; it is breakthrough technology that represents a paradigm shift in both technology and performance.
• This next-generation R1 keeps all the technological superiorities developed for its predecessor: YCC-T (Yamaha Chip Controlled Throttle) is MotoGP inspired fly-by-wire technology used to deliver instant throttle response. YCC-I is Yamaha Chip Controlled Intake which is a variable intake system that broadens the spread of power. The fuel injection system provides optimum air/fuel mixtures for maximum power and smooth throttle response.
• The R1 features Yamaha D-MODE (or drive mode) with rider-selectable throttle control maps to program YCC-T performance characteristics for riding conditions. The standard map is designed for optimum overall performance. The “A” mode lets the rider enjoy sportier engine response in the low- to mid-speed range, and the “B” mode offers response that is somewhat less sharp response for riding situations that require especially sensitive throttle operation. Switching maps is as easy as pushing a button on the handlebar switch.
• In keeping with this machine’s exceptional cornering ability and crisp handling, the all new aluminum frame has been designed to offer exceptional rigidity balance. The rear frame is now lightweight CF die-cast magnesium, contributing the optimum mass centralization. Suspension includes new SOQI front forks which use one of the tricks developed for our winning MotoGP bikes: independent damping. The left fork handles compression damping and the right side handles the rebound damping. And the rear shock adopts new bottom linkage for optimum suspension characteristics.
• All new bodywork does more than add break-away-from-the- crowd styling. Completely new, the new model has a more serious, less busy look. The side fairing is smoother for a sleeker appearance. And, instead of the usual four bulb headlight design, the ’09 model now has only two projector-type bulbs mounted closer to the nose of the bike. This positions ram air ducts closer in for a more compact, smooth look. In addition, the rounded lenses are new and unique to the supersport industry.

Engine:

• Crossplane crankshaft technology proven in victory after victory on MotoGP machines provides a high-tech uneven firing interval. Unlike typical in-line-four engine design, where the two outer and two inner pistons move together in pairs with 180°intervals, the crossplane crankshaft has each connecting rod 90° from the next with a unique firing order of 270° –180° – 90° – 180°. This overcomes the inherent fluctuations in inertial torque during each engine revolution, and the accompanying peaky torque characteristics. Instead, compression torque continues to build, giving the rider more linear throttle response with awesome power and traction out of the corners.
• To maximize rider comfort as well as power output, this newly designed engine adopts a coupling-type balancer that rotates in the opposite direction as the crankshaft.
• This engine features new forged aluminum pistons to take maximum advantage of the power characteristics. As proven on previous models, titanium intake valves are lightweight titanium.
• A forced-air intake system is adopted to increase intake efficiency by using the natural airflow during riding to pressurize the air in the air cleaner box. This contributes to outstanding power delivery characteristics in the high-speed range, while the design also helps to minimize intake noise.
• Slipper-type back torque-limiting clutch greatly facilitates braking/downshifting from high speed.
• The exhaust system is completely new. It’s meticulously designed to enhance engine output while, thanks to its threeway catalyst technology, also reducing exhaust emissions. The silencer is a single expansion type, and, the sound coming through from the unique crossplane-crankshaft-equipped engine is unlike any other in-line four cylinder production supersport.
• This fuel-injected engine takes full advantage of YCC-T (Yamaha Chip Controlled Throttle), the MotoGP-inspired fly-by-wire technology used to deliver instant throttle response. There’s also YCC-I, Yamaha Chip Controlled Intake, the variable intake system that broadens the spread of power. Fuel injectors have 12 holes for precise fuel delivery that translates to the most power from every fuel charge.
• Have it your way, thanks to Yamaha D-MODE variable throttle control. There are three modes that control how YCC-T responds to throttle input from the rider. The selectable “A” mode puts more emphasis on acceleration in low to midrange rpm. “B” mode, on the other hand, provides less sharp response to input for riding situations that require especially sensitive throttle operation. Selecting the map you want is as easy as pressing button on the handlebars.

Chassis/Suspension:

• The frame is completely revamped, with a combination of uncompromising rigidity where needed along with carefully achieved flex for the precise rigidity balance this bike needs to give the rider the full benefit of its handling and engine characteristics. No one-technique-fits-all-needs design, it is a sophisticated combination of CF die-cast, stamping, and gravity casting… the exact technology needed for each portion of this advanced frame.
• New SOQI front forks take a page from the championship-winning design of our MotoGP weapon, the M1. Since both forks always move together, compression damping duties can be confined to the left fork, while rebound damping is precisely handled by the right fork.
• The new SOQI rear shock both high and low speed compression damping plus an easy-to-use screw adjustment for preload. This unit also adopts a pillow-ball-type joint for exceptional shock absorption, road hold feeling, and damper response. To achieve maximum performance, a new bottom linkage is used to work with the rest of the chassis refinements for brilliant, crisp handling characteristics.
• Factory racers get machines tailored to their preferences. Welcome to the club. R1 has adjustable footrests, with a 15mm height and 3mm front-to-rear adjustment.
• The press-formed fuel tank has a shape developed using 3-D simulation analysis technology. The elongated shape of the tank allows it to fit neatly within the frame in a way that promotes concentration of mass.

Additional Features:

• The newly designed instrumentation includes everything a rider wants to know, including gear position.

Specifications:

Engine
Type	998cc, liquid-cooled 4-stroke DOHC 16 valves (titanium valves)
Bore x Stroke	78.0mm X 52.2mm
Compression Ratio	12.7:1
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	#530 O-ring chain
Chassis
Suspension/Front	43mm inverted fork; fully adjustable, 4.7-in travel
Suspension/Rear	Single shock w/piggyback reservoir; 2-way adjustable, 4.7-in travel
Brakes/Front	Dual 310mm disc; radial-mount forged 6-piston calipers
Brakes/Rear	220mm disc; single-piston caliper
Tires/Front	120/70ZR17M/C 58W
Tires/Rear	190/55ZR17M/C 75W
Dimensions
Length	81.1 in
Width	28.1 in
Height	44.5 in
Seat Height	32.8 in
Wheelbase	55.7 in
Rake (Caster Angle)	24.0°
Trail	4.0 in
Fuel Capacity	4.8 gal
Fuel Economy**	33 mpg
Wet Weight	454 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	65/43 (1.512)
Secondary Reduction Ratio	47/17 (2.765)
Gear Ratio – 1st Gear	38/15 (2.533)
Gear Ratio – 2nd Gear	33/16 (2.063)
Gear Ratio – 3rd Gear	37/21 (1.762)
Gear Ratio – 4th Gear	35/23 (1.522)
Gear Ratio – 5th Gear	30/22 (1.364)
Gear Ratio – 6th Gear	33/26 (1.269)
Warranty	1 Year (Limited Factory Warranty)

Source

Wikipedia