ST4 (2003)

Moteur
Type
L-Twin cylinder, 4 valve per cylinder Desmodromic; liquid cooled
Cylindrée
916cc
Alésage x course
94x66mm
Ratio de compression
11:1 
Puissance
103hp - 76kw @ 9500rpm
Couple
8.6kgm - 84Nm @ 7500rpm
Injection
Marelli electronic fuel injection, 50mm throttle body
Échappement
2 aluminum mufflers with 3-way catalytic converter (non-catalytic for USA version)
Transmission
Boîte de vitesse
6 speed
Transmission primaire
Straight cut gears, ratio 1.84
Ratio
1st 37/15, 2nd 30/17, 3th 27/20, 4th 24/22, 5th 23/24, 6th 24/28
Transmission finale
Chain; Front sprocket 15; Rear sprocket 43
Embrayage
Dry multiplate with hydraulic control
Châssis
Cadre
Tubular steel trellis
Suspension avant
Showa 43mm upside-down fully adjustable fork
Roue avant
3-spoke light alloy, 3.50x17
Pneu avant
120/70 ZR17
Suspension arrière
Progressive linkage with fully adjustable Sachs monoshock
Roue arrière
3-spoke light alloy 5.50 x 17
Pneu arrière
180/55 ZR17
wheel-travel-front
130mm / 5.1in
wheel-travel-rear
148mm / 5.8in
Frein avant
2 x 320 mm semi-floating discs, 4-piston caliper
Frein arrière
245mm disc, 2-piston caliper
Tableau de bord
Speedometer, rev counter, tripmeter, neutral light, oil pressure warning light, low fuel warning light, high beam indicator, turns signals, LCD display with clock, water temperature, fuel level
Dimensions et poids
Pois à sec
215kg / 474lb
Hauteur de selle
820mm / 32.8in
Empattement
1430mm / 56.3in
Angle de chasse
24°
Capacité du réservoir
21l (of which 6l reserve) / 5.5 US gal (of which 1.5 US gal reserve)
Nombre de places
Na
Garantie et Maintenance
Garantie
2 years unlimited mileage
Emissions et consommation
Standard
Emissions are in compliance with Euro1 standard regulations and are also expected to comply with Euro2 regulations, which have still not been defined. (Except for USA version)