Moto-Data

Yamaha XJ 650 Seca (1981) vs Yamaha XS 250 (1977-81) vs Yamaha XZ 550R Vision (1983) vs Yamaha TT-R 250 (1997-98) vs Yamaha TX 650-II (1977-79) vs Yamaha RD / RZ 125LC (1981-82) vs Yamaha XV 125S Virago (1997-02)

Comparison technical specifications


Add bike 		1981 Yamaha XJ 650 Seca
Remove bike 		1977 Yamaha XS 250
Remove bike 		1983 Yamaha XZ 550R Vision
Remove bike 		1997 Yamaha TT-R 250
Remove bike 		1977 Yamaha TX 650-II
Remove bike 		1981 Yamaha RD / RZ 125LC
Remove bike 		1997 Yamaha XV 125S Virago
Remove bike
Make: Yamaha Yamaha Yamaha Yamaha Yamaha Yamaha Yamaha
Model: XJ 650 Seca XS 250 XZ 550R Vision TT-R 250 TX 650-II RD / RZ 125LC XV 125S Virago
Years: 1981 1977-81 1983 1997-98 1977-79 1981-82 1997-02
Engine: Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder, Four stroke, 180° parallel twin, SOHC, 2 valves per cylinder Four stroke, 70°V-twin cylinder. DOHC, 4 valve per cylinder Four stroke, single cylinder, DOHC, 4-valve per cylinder. Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder. Two stroke, single cylinder Four stroke, V-twin cylinder, 2 valves per cylinder.
Capacity: 653 cc / 39.8 cu-in 248 cc / 15.2 cu-in 552 cc / 33.7 lb-ft 249 cc / 15.1 cu-in 653 cc / 39.8 cu in 123 cc / 7.5 cu-in 124 cc / 7.6 cu-in
Bore x Stroke: 63 х 52.4 mm 55 х 52.4 mm 80 х 55 mm 73 x 59.6 mm 75 x 74 mm 56 х 50 mm 41 x 47 mm
Cooling System: Air-cooled Air cooled Liquid cooled Air-cooled Air cooled Liquid cooled Air cooled
Compression Ratio: 9.2:1 9.6:1 10.4:1 10.3:1 8.4:1 6.4:1 NA
Induction: 4x 32mm Hitachi carburetors 2x 32mm Mikuni carburators 2x 36mm Mikuni carburetors TEIKEI Y30P carb 2 x Mikuni carburetors 24mm Mikuni carburetors Carburetor
Ignition: Transistorized Coil and cb Battery powered inductive Digital CDI Battery, induction coil Hitachi CDI CDI
Starting: Electric Kick Electric Electric Electric and kick Kick Electric
Max Power: 71 hp / 51.8 kW @ 9400 rpm 27 hp / 20.1 kW @ 9500 rpm 64 hp / 46.7 kW @ 9500 rpm 28 hp / 20.6 kW @ 8500 rpm 39.5 kW / 53 hp @ 7200 rpm 20 hp / 15.5 kW @ 9500 rpm 11 hp / 8 kW @ 10000 rpm
Max Torque: 57 Nm / 42 lb-ft @ 7500 rpm 2.2 kgf-m / 15.9 lb-ft @ 8500 rpm 4.8 kgf-m / 34.7 lb-ft @ 8500 rpm 2.8 kgf-m / 27.1 Nm / 20.0 lb-ft @ 7000 rpm 54 Nm / 5.5 kgf-m / 39.8 lb-ft @ 6800 rpm 1.6 kgf-m / 16 Nm @ 9250 rpm 9.4 Nm / 6.9 lb-ft @ 7500 rpm
Transmission: 5 Speed 6 Speed 5 Speed 6 Speed 5 Speed 6 Speed 5 Speed
Final Drive: Shaft Chain Shaft Chain Chain Chain Chain
Front Suspension: 36mm Kayaba forks Telescopic forks Telescopic oil damped forks Telescopic forks, Coil air spring oil damper Telescopic forks 32mm Telescopic forks Telescopic forks
Rear Suspension: Duel Kayaba shocks Dual shocks, swing arm, 5-position preload adjustable Gas filled monoshock, 2-way adjustable. Monocross, Single shock, link-type, w/adjustable preload Dual shock absorbers Monocross linkage 6-way preload adjustment Dual shocks
Front Brakes: 2x 268mm disc 1 piston calipers Single 267mm disc 2x 266mm discs Single 245mm disc Twin hydraulic discs, 267 mm Single 245mm disc Single 282mm disc
Rear Brakes: Drum 178mm Drum Single 177mm drum Single 220mm disc Drum 130mm Drum 130mm drum
Front Tyre: 3.25-19 3.00-18 100/90-18 3.00-21 3.50H-19 4PR 2.75-18-4PR 80/100-18
Rear Tyre: 120/90-18 3.50-18 110/90-18 4.60-18 4.00H-18 4PR 3.00-18-6PR 130/90-15
Dry Weight: 206 kg / 465 lbs 165.5 kg / 365 lbs 188 kg / 414.4 lbs 113 kg / 249 lbs 191 kg / 420 lbs 98 kg / 216 lbs 139.0 kg / 306.4 lbs
Fuel Capacity: 19.5 Litres / 5.1 US gal 14 Litres / 3.7 US gal 17 Litres / 4.4 US gal 10.2 Litres / 2.7 US gal 15 Litres / 4.0 US gal 13 Litres / 3.4 US gal 9.5 Litres / 2.5 US gal