What category is the 1999 Yamaha YZF 600 R Thundercat?

General information
Category	Sport
Model	Yamaha YZF 600 R Thundercat
Year	1999
Engine and Transmission Specifications
Transmission type,final drive	Chain
Gearbox	6-speed
Cooling system	Liquid
Valves per cylinder	4
Top speed	255.0 km/h (158.4 mph)
Torque	66.00 Nm (6.7 kgf-m or 48.7 ft.lbs) @ 9500
Power	100.00
Engine type	In-line four, four-stroke
Capacity:	599.00 ccm (36.55 cubic inches)

Brakes, suspension, Frame and wheels
Rear brakes	Single disc
Front brakes	Dual disc
Physical measures and capacities
Seat height	795 mm (31.3 inches) If adjustable, lowest setting.
Power/weight ratio	0.5348 HP/kg
Dry weight	187.0 kg (412.3 pounds)

Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Starter	Electric

Performance Profile & Rider Fit

100.1 hp

Peak Power

3.4s

0-60 mph

Best For

Track72%

City55%

Cornering80%

Daily Riding60%

Touring58%

Passenger50%

Rider Profile

Best For	Best suited to riders with at least some prior experience on mid-to-large sportbikes who are comfortable with a forward-leaning riding position and strong midrange power delivery.
Purpose	Designed as a sport-touring-leaning supersport, blending brisk in-line four performance with a slightly more relaxed chassis setup than a full-blown race replica.
Rider Fit	The moderate 805mm seat height and 187kg dry weight make it manageable for average-height riders, though the sporty ergonomics still put some load on wrists and shoulders on longer rides.
Character	A characterful late-90s/early-2000s inline-four sport machine that rewards revs with a smooth, linear power delivery and confident, stable cornering manners.
Not Ideal For	Not ideal for complete beginners seeking an upright, low-effort commuter, nor for riders wanting genuine long-distance touring comfort or any off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

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Feet:

At 795mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 1999 Yamaha YZF 600 R Thundercat, with a cramped knee angle of around 70 degrees and a forward-leaning riding position.

Data quality: estimated (wheelbase estimated from this category's typical bike, not this model's own spec). Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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