Sport comparison chart

		Sportrax 90 2wd	Sportrax 250EX 2wd	Sportrax 400EX 2wd	Sportrax 450R / 450ER 2wd
Classification		Junior fun	Sport	Race	Sport/race
Engine		86cc air-cooled SOHC single-cylinder four-stroke	229cc air-cooled OHV longitudinally mounted single-cylinder four-stroke	397cc air-cooled dry sump RVFC 4-stroke single cylinder	450cc liquid-cooled single-cylinder four-stroke
Bore x stroke		47mm x 49.5mm	68.5mm x 62.2mm	85.0mm x 70.0mm	96mm x 62mm
Carburation		22mm piston-valve	22mm piston-valve	38mm piston-valve with accelerator pump	Keihin® 40mm flat-slide with throttle position sensor (TPS)
Ignition		CDI	CD with electronic advance	CD with electronic advance	CD with electronic advance
Starter		Electric	Electric with recoil backup	Electric with recoil backup	Electric or forward kick
Transmission		4 speed auto clutch with manual shift	5 fwd/1 rev auto clutch with manual shift	5 fwd/1 rev manual clutch with manual shift	5 fwd/1 rev manual clutch with manual shift
Drive		2 wd O-ring-sealed chain	2 wd Direct rear drive shaft	2 wd O-ring-sealed chain	2 wd O-ring-sealed chain
Front suspension		Independent suspension; 66mm travel	Independent double-wishbone; 150mm travel	Independent double-wishbone 5-position spring-preload adj. Showa® shocks 208mm (8.2") travel	Independent double-wishbone with Showa® shocks, featuring adjustable spring preload, rebound and compression damping; 213mm travel
Rear suspension		Swingarm with single shock; 66mm travel	Swingarm with single shock; 145mm travel	Pro-Link® fully adjustable single Showa® shock 231mm (9.1") travel	Pro-Link® with single Showa® shock featuring adjustable spring preload, rebound and compression damping; 236 mm of travel
Front brakes		Dual sealed drum	Dual hydraulic 174mm discs	174mm dual hydraulic discs	Dual hydraulic 174mm discs with twin-piston callipers
Rear brakes		Sealed drum	Sealed mechanical drum	Single 220mm disc	Single hydraulic 190mm disc with single-piston calliper
Front tyres		20 x 7-8	22 x 7-10 knobbly	22 x 7-10 knobbly radial	22 x 7-10 knobbly radial
Rear tyres		19 x 8-8	22 x 10-9 knobbly	20 x 10-9 knobbly radial	20 x 10-9 knobbly radial
Dimensions (in mm)	L	1488	1740	1834	1862
	W	894	1062	1151	1176
	H	927	1077	1110	1100
Wheelbase (mm)		983	1125	1229	1275
Seat height (mm)		660	798	810	833
Ground clearance (mm)		102	150	109	112
Fuel capacity (l)		7.5 litre, including 1.1 litre reserve	10 litres, including 2.6 litre reserve	9.8	12 litres
Dry weight (kg)		114	163	170	165kg (Electric Start) / 162kg (Kick Start)