2017 Sherco 125 ST Technical Analysis & Specification Breakdown
At the heart of the 2017 Sherco 125 ST trial motorcycle, Sherco utilizes a 123.7 cc (7.6 cu in) liquid-cooled single cylinder, two-stroke layout. Internal engine geometry specifies a bore and stroke of 54.0 x 54.0 mm (2.1 x 2.1 inches).
On the scales, the 125 ST measures 67 kg (148 lbs) dry. Rider ergonomics and chassis geometry center around a 685 mm (27 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,322 mm (52 in) wheelbase engineered for quick, flickable steering geometry. The 2.4-liter (0.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Sherco archive, this model family spans 3 indexed model years from 2014 to 2017, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
685 mm (27 in)
Engine
Displacement123.7 ccm (7.55 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsNikasil coated cylinder
Bore x Stroke54.0 x 54.0 mm (2.1 x 2.1 inches)
Fuel SystemCarburettor. Keihin Ø 28
IgnitionHidria digital
Lubrication2% oil pre-mix
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchHydraulically activated multidisc in oil bath
Performance
ExhaustSteel header pipe with an integrated aluminum muffler
Chassis
Frame TypeTubular section Chrome-moly
Front SuspensionTech Ø 39 mm hydraulic telescopic fork
Front Travel165 mm (6.5 inches)
Rear SuspensionProgressive link system with single R16V adjustable shock absorber
Rear Travel175 mm (6.9 inches)
Wheelbase1322 mm (52.0 inches)
Ground Clearance310 mm (12.2 inches)
Wheels & Brakes
Front Tyre2.50-21
Rear Tyre2.75-18
Front BrakesSingle disc. Hydraulically activated Formula floating disc
Front Brake Ø185 mm (7.3 inches)
Rear BrakesSingle disc. Hydraulically activated Formula floating disc
Rear Brake Ø145 mm (5.7 inches)
WheelsMorad 21 inch front and 18 inch rear anodized aluminum rim and aluminum hub, steel spokes with Michelin tube-type tire
Dimensions & Weight
Dry Weight67.0 kg (147.7 pounds)
Seat Height685 mm (27.0 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
