# Yamaha YZF-R6

The Yamaha YZF-R6 is a sport bike, produced by Yamaha as a 600 class from 1999 to 2020. From 2021, production availability is limited to a non-homologated race-only specification in most global markets, causing race organisers to realign their engine eligibility criteria to encourage other manufacturers having larger than 600 cc displacements to enter road-race competition from 2022. Race organisers wanted to provide scope for alternative machinery to move away from established tradition of the Yamaha R6 being the dominant marque in Supersport racing.

## History
### The Original

The YZF-R6 was introduced in 1999 as the super-sport version of YZF-R1 super bike, and as a companion to the more street-oriented YZF600R sport bike, which continued to be sold alongside the R6. The motorcycle featured Yamaha's completely new engine design capable of producing over 108 hp (81 kW) while stationary. The R6 was the world's first 600 cc production four-stroke motorcycle producing over 100 hp (75 kW) in stock form.

### 2003 Redesign

The YZF-R6 has been revised several times since its introduction. Starting in 2003, the R6 became fuel injected. It also received a new headlight design that was more reminiscent of its bigger brother the YZF-R1.

### 2006 Redesign and the "tachometer problem"

The 2006 model year was a significant upgrade with a new engine-management system featuring the YCC-T ride by wire throttle and a multiplate slipper clutch. The 2008 model incorporated the YCC-I variable-length intake system to optimize power at high engine speeds, a slight change in exterior bodywork for better aerodynamics, and an improved Deltabox frame design.
In 2006, Yamaha advertised that the R6 had a redline of 17,500 rpm. This is 2,000 rpm higher than the previous R6 model and was the highest tachometer redline of any 2006 production four-stroke motorcycle engine. The true maximum engine speed was limited by the ECU to 15,800 rpm. In February 2006, Yamaha admitted the bike's true engine redline was more than 1,000 rpm lower than what was indicated on the tachometer and had been advertised, and offered to buy back any R6 if the customer was unhappy.

### 2017 Redesign

In 2017 the R6 received improved aerodynamics with styling inspired by the 2015 R1, as well as its 43 mm inverted front fork and front brakes, new rear shock, a new aluminum fuel tank, magnesium subframe, ABS brakes, riding modes, and traction control. The new aerodynamics are claimed to reduce drag by 8% over previous models. The engine is unchanged, with rear-wheel power still at about 120 hp. Body is similar to MotoGPs 2005– YZR-M1.
The 2017 update comes with an OBD port. Unlike previous models, this R6 does not have the same diagnostic mode option. To retrieve the diagnostic codes, an adapter that plugs into any OBD-II scanner is needed.

### The R6's History in Motorsports

Chaz Davies helped Yamaha to win both the riders and manufacturers title during the 2011 Supersport World Championship season. The bike also won the super-sport category at the 2008 North West 200 Races.

## Specifications

| | 1999–2000 | 2001–2002 | 2003–2004 | 2005 | 2006–2007 | 2008–2009 | 2010–2016 | 2017-2020 |
| Engine | DOHC, 16-valve, liquid-cooled, four-stroke, inline four-cylinder | DOHC, 16-valve, liquid-cooled, four-stroke, inline four-cylinder | DOHC, 16-valve, liquid-cooled, four-stroke, inline four-cylinder | DOHC, 16-valve, liquid-cooled, four-stroke, inline four-cylinder | DOHC, 16-valve, liquid-cooled, four-stroke, inline four-cylinder | DOHC, 16-valve, liquid-cooled, four-stroke, inline four-cylinder | DOHC, 16-valve, liquid-cooled, four-stroke, inline four-cylinder | DOHC, 16-valve, liquid-cooled, four-stroke, inline four-cylinder |
| Displacement | 599.8 cc (36.60 cu in) | 599.8 cc (36.60 cu in) | 599.8 cc (36.60 cu in) | 599.8 cc (36.60 cu in) | 599.8 cc (36.60 cu in) | 599.4 cc (36.58 cu in), titanium valves | 599.4 cc (36.58 cu in), titanium valves | 599.4 cc (36.58 cu in), titanium valves |
| Bore × stroke | 65.5 mm × 44.5 mm (2.58 in × 1.75 in) | 65.5 mm × 44.5 mm (2.58 in × 1.75 in) | 65.5 mm × 44.5 mm (2.58 in × 1.75 in) | 65.5 mm × 44.5 mm (2.58 in × 1.75 in) | 67.0 mm × 42.5 mm (2.64 in × 1.67 in) | 67.0 mm × 42.5 mm (2.64 in × 1.67 in) | 67.0 mm × 42.5 mm (2.64 in × 1.67 in) | 67.0 mm × 42.5 mm (2.64 in × 1.67 in) |
| Compression ratio | 12.4:1 | 12.4:1 | 12.4:1 | 12.4:1 | 12.8:1 | 13.1:1 | 13.1:1 | 13.1:1 |
| Horsepower | 73.7 kW (98.9 hp) @ 12,500 rpm (rear wheel) | 79.7 kW (106.9 hp) @ 12,500 rpm (rear wheel) | 86.0 kW (115.3 bhp) @ 13,000 rpm (claimed) | 88.2 kW (118.3 bhp) @ 13,000 rpm (claimed) | 93.4 kW (125.3 bhp) @ 14,500 rpm (claimed) | 94.9 kW (127.3 bhp) @ 14,500 rpm (claimed) | 91.0 kW (122.0 bhp) @ 14,500 rpm (claimed) | 87.1 kW (116.8 bhp) @ 14,500 rpm (claimed) |
| Torque | 57.2 N⋅m (42.2 lb⋅ft) @ 10,500 rpm | 59.2–60.2 J (43.7–44.4 ft⋅lb) @ 11,000 rpm | 60.6 N⋅m (44.7 lb⋅ft) @ 11,750 rpm | 60.5 N⋅m (44.6 lb⋅ft) @ 12,000 rpm | 59.4 N⋅m (43.8 lb⋅ft) @ 11,500 rpm | 58.7 N⋅m (43.3 lb⋅ft) @ 10,500 rpm | 57.5 N⋅m (42.4 lb⋅ft) @ 11,500 rpm | 61.7 N⋅m (45.5 lb⋅ft) @ 10,500 rpm |
| Fuel system | 37 mm carburetors | 37 mm Keihin CV Downdraft w/throttle position sensor | Fuel injection | Fuel injection | Fuel injection w/ YCC-T | Fuel Injection w/YCC-T and YCC-I | Fuel Injection w/YCC-T and YCC-I | Fuel Injection w/YCC-T and YCC-I |
| Ignition | CDI | CDI | Digital DC-CDI | Digital DC-CDI | TCI (Transistor Controlled Ignition) | TCI (Transistor Controlled Ignition) | TCI (Transistor Controlled Ignition) | TCI (Transistor Controlled Ignition) |
| Drivetrain | multi-plate clutch, 6-speed #532 O-ring chain | multi-plate clutch, 6-speed #532 O-ring chain | multi-plate clutch, 6-speed #532 O-ring chain | multi-plate clutch, 6-speed #532 O-ring chain | multi-plate slipper clutch, 6-speed, #525 O-ring chain | multi-plate slipper clutch, 6-speed, #525 O-ring chain | multi-plate slipper clutch, 6-speed, #525 O-ring chain | multi-plate slipper clutch, 6-speed, #525 O-ring chain |
| Chain and Sprockets | Front Sprocket: 16 teeth Rear Sprocket: 48 teeth Chain: 116 links, 532 Pitch | Front Sprocket: 16 teeth Rear Sprocket: 48 teeth Chain: 116 links, 532 Pitch | Front Sprocket: 16 teeth Rear Sprocket: 48 teeth Chain: 116 links, 532 Pitch | Front Sprocket: 16 teeth Rear Sprocket: 48 teeth Chain: 116 links, 532 Pitch | Front Sprocket: 16 teeth Rear Sprocket: 45 teeth Chain: 116 links, 525 Pitch | Front Sprocket: 16 teeth Rear Sprocket: 45 teeth Chain: 116 links, 525 Pitch | Front Sprocket: 16 teeth Rear Sprocket: 45 teeth Chain: 116 links, 525 Pitch | |
| Suspension | Front: fully adjustable 43 mm telescopic fork Rear: fully adjustable monoshock | Front: fully adjustable 43 mm telescopic fork, 130 mm (5.3 in) of travel Rear: | Front: 43 mm telescopic fork w/adjustable preload, compression and rebound damping; 120 mm (4.7 in) travel Rear: | Front: 41 mm inverted telescopic fork w/adjustable preload, separate high & low-speed compression damping, rebound damping; 120 mm (4.7 in) travel Rear: | Front: 41 mm inverted telescopic fork w/adjustable preload, separate high & low-speed compression damping, rebound damping; 120 mm (4.7 in) travel Rear: | Front: 41 mm inverted telescopic fork w/adjustable preload, separate high & low-speed compression damping, rebound damping; 120 mm (4.7 in) travel Rear: | Front: 41 mm inverted telescopic fork w/adjustable preload, separate high & low-speed compression damping, rebound damping; 120 mm (4.7 in) travel Rear: | Front: 43 mm inverted fork, 3-way adjustable; 120 mm (4.7 in) travel Rear: 4-way adjustable; 120 mm (4.7 in) travel |
| Tires | Front: 120/60-ZR17 Rear: 180/55-ZR17 | Front: 120/60-ZR17 Rear: 180/55-ZR17 | Front: 120/60-ZR17 Rear: 180/55-ZR17 | Front: 120/70-ZR17 Rear: 180/55-ZR17 | Front: 120/70-ZR17 Rear: 180/55-ZR17 | Front: 120/70-ZR17 Rear: 180/55-ZR17 | Front: 120/70-ZR17 Rear: 180/55-ZR17 | Front: 120/70-ZR17 Rear: 180/55-ZR17 |
| Brakes | Front: 2×295 mm floating disc | | Front: 2x298 mm disc Rear: 220 mm disc | Front: 2x310mm floating disc Rear: 220mm disc | Front: 2x310mm floating disc Rear: 220mm disc | Front: 2x310mm floating disc Rear: 220mm disc | Front: 2x310mm floating disc Rear: 220mm disc | Front: 2x320 mm hydraulic disc Rear:220 mm hydraulic disc |
| Length | | 2,100 mm (81 in) | 2,020 mm (79.7 in) | 2,020 mm (79.7 in) | 2,040 mm (80.3 in) | 2,040 mm (80.3 in) | 2,040 mm (80.3 in) | 2,040 mm (80.3 in) |
| Width | | 700 mm (27.6 in) | 690 mm (27.2 in) | 690 mm (27.2 in) | 700 mm (27.6 in) | 700 mm (27.6 in) | 700 mm (27.6 in) | 700 mm (27.6 in) |
| Height | | 1,120 mm (44.2 in) | 1,090 mm (42.9 in) | 1,090 mm (42.9 in) | 43.1 in (1,090 mm), 2011: 43.3 in (1,100 mm) | 43.1 in (1,090 mm), 2011: 43.3 in (1,100 mm) | 43.1 in (1,090 mm), 2011: 43.3 in (1,100 mm) | 1,150 mm (45.3 in) |
| Seat height | 810 mm (32.0 in) | 830 mm (32.8 in) | 820 mm (32.3 in) | 820 mm (32.3 in) | 850 mm (33.5 in) | 850 mm (33.5 in) | 850 mm (33.5 in) | 850 mm (33.5 in) |
| Wheelbase | 1,400 mm (55.1 in) | 1,380 mm (54.4 in) | 1,380 mm (54.3 in) | 1,380 mm (54.3 in) | 1,380 mm (54.3 in) | 1,380 mm (54.3 in) | 1,380 mm (54.3 in) | 1,370 mm (54.1 in) |
| Rake, trail | | | 24°, 86 mm (3.4 in) | 24°, 86 mm (3.4 in) | 24°, 97 mm (3.8 in) | 24°, 97 mm (3.8 in) | 24°, 97 mm (3.8 in) | 24° |
| Fuel capacity | | 17 L; 3.7 imp gal (4.5 US gal) | 17 L; 3.7 imp gal (4.5 US gal) | 17 L; 3.7 imp gal (4.5 US gal) | 17 L; 3.8 imp gal (4.6 US gal) | 17 L; 3.8 imp gal (4.6 US gal) | 17 L; 3.8 imp gal (4.6 US gal) | 17 L; 3.7 imp gal (4.5 US gal) |
| Dry weight | 181–183 kg (398–404 lb) ('99) | 181–181 kg (398–399 lb) ('01) | 176 kg (388 lb) ('03) 392 lb (178 kg) ('04) | 180 kg (397 lb) | 180 kg (396 lb) | 181 kg (399 lb) | | |
| Wet weight | 200 kg (430 lb) | 193 kg (426 lb) ('01) | 188 kg (415 lb) ('03) 190 kg (419 lb) ('04) | 192 kg (424 lb) | | 189 kg (417 lb) | 189 kg (417 lb) | 190 kg (419 lb) |
| Performance |||||||||
| 0 to 60 mph (0 to 97 km/h) | 3.0–3.35 sec. | 2.8 sec. | | | 3.0 sec. | | | |
| 0 to 1⁄4 mi (0.00 to 0.40 km) | 10.97 @ 201.46 km/h (125.18 mph) 10.97 @ 204.56 km/h (127.11 mph) | 10.80 sec. @ 206.49 km/h (128.31 mph) | | | 10.67 sec. @ 210.49 km/h (130.79 mph) | | | |
| Top speed | 253–257 km/h (157–160 mph) | 253 km/h (157 mph) | | | 260 km/h (160 mph) | | | |
| Fuel economy | 6.19–6.17 L/100 km; 45.6–45.8 mpg$_{‑imp}$ (38.0–38.1 mpg$_{‑US}$) | 6.4 L/100 km; 44 mpg$_{‑imp}$ (37 mpg$_{‑US}$) | | | 7.0 L/100 km; 40.1 mpg$_{‑imp}$ (33.4 mpg$_{‑US}$) | | | |
| CO$_2$ | | | | | | | | 154g/km |