ST 125

The entry-level model is a 125cc motorcycle that is ideal for the initiation of future champions. This small ST includes all of the new improvements and changes that have been developed for the entire range. This represents a great step forward and indicates a strong commitment by Sherco to young riders. The 125 is a very competitive bike that they can learn on and improve their skills. The mechanical components have been developed from the experience we have gained from the Sherco Academy program.

2016 Evolutions


  • Surflex R clutch
  • Improved sealing of the carburetor inlet connection
  • Silencer evolution
  • Exhaust manifold strengthened
  • Reinforced gear selector lever
  • Improved kick starter lever fixation


  • New chassis
  • New engine guard design
  • New fuel tank
  • New air filter box
  • New rear fender
  • Tech Fork
  • R16V shock
  • Anodized alloy wheels

Data Sheet

Engine 2 strokes Sherco proprietary design
Engine size 123.70 cc (7.55 cu in)
Bore & Stroke 54 x 54 mm (2.13 x 2.13 in)
Fuel system
Cylinder lubrication
Cylinder Nikasil coated cylinder
Lubrication 2% oil pre-mix
Fuel Unleaded gasoline 98 Octane
Carburetor Keihin Ø 28 mm
Cooling Liquid system
Start Geared system with folding lever
Exhaust Steel header pipe with an integrated aluminum muffler
Systeme Allumage
Transmission 5 speed sequential gearbox with security selector system to prevent false shifts. Primary gear drive chain secondary drive
Clutch Hydraulically activated multidisc in oil bath
Ignition Hidria digital
Frame Tubular section Chrome-moly
Fuel Tank Polyamide – 2.4 L (0.63 US Gal) capacity
Brakes Hydraulically activated, floating 185 mm front and 145 mm rear
Front suspension Tech Ø 39 mm (1.54 in) hydraulic telescopic fork, 165 mm (6.50 in) travel
Rear suspension Progressive link system with single adjustable shock absorber, 175 mm (6.89 in) travel Rear shok
Rear shock absorber R16V
Front wheel Morad 21” graphit anodized aluminum rim and aluminum hub with tube-type tire
Rear wheel Morad 18” graphit anodized aluminum rim and aluminum hub with tubeless tire
Weight 67 kg (147.71 lb)
Wheelbase 1322 mm (52.05 in)
Ground clearance 310 mm (12.20 in)
Seat height 685 mm (26.97 in)