Sherco 125 ST Factory - 2021 Specifications and Reviews

The 2021 Sherco 125 ST Factory is a lightweight trial bike engineered for competitive riders seeking precision and agility on technical terrain. Powered by a potent 123.7cc two-stroke engine with digital ignition and liquid cooling, it delivers responsive performance through a 5-speed gearbox. Known for its nimble handling and exceptional maneuverability, this machine excels in trial competition.

2021
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General information

CategoryTrial
Year2021
ModelSherco 125 ST Factory

Engine and Transmission Specifications

Exhaust systemTubular section Chrome-moly
ClutchHydraulic, diaphragm system
Transmission typeChain   (final drive)
Gearbox5-speed
Cooling systemLiquid
Lubrication system2% oil pre-mix
IgnitionHidria digital
Fuel systemCarburettor. Keihin PWK 28
Bore x Stroke54.0 x 54.0 mm (2.1 x 2.1 inches)
Engine detailsSherco engine
Engine typeSingle cylinder, two-stroke
Capacity:123.7 ccm (7.55 cubic inches)
 
 

Brakes, suspension, Frame and wheels

WheelsMorad blue anodized aluminium rim
Rear brakesSingle disc
Diameter185 mm (7.3 inches)
Front brakesSingle disc
Rear wheel travel175 mm (6.9 inches)
Rear SuspensionProgressive link system with single adjustable shock absorber . 3-way Reiger shock absorber.
Front wheel travel165 mm (6.5 inches)
Front SuspensionAluminum Tech fork Ø 39 mm
Frame typeTubular section Chrome-moly
 
 

Physical measures and capacities

Fuel capacity2.40 litres (0.63 US gallons)
Wheelbase1322 mm (52.0 inches)
Ground clearance310 mm (12.2 inches)
Seat height685 mm (27.0 inches) If adjustable, lowest setting.

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsSpanish brand.
StarterKick
Color optionsWhite/Blue/Yellow

Performance Profile & Rider Fit

Best For

Track10%
City15%
Cornering60%
Daily Riding10%
Touring5%
Passenger5%

Rider Profile

Best ForThis is a specialist trial machine best suited to riders with prior off-road or trials experience, or dedicated beginners committed to learning the discipline.
PurposeBuilt purely for technical trials riding, tackling obstacles, rocks, and tight balance-based maneuvers at very low speeds rather than for general riding or speed.
Rider FitExtremely light and slim with a low seat height, but the standing-focused riding style demands strong core balance, leg strength, and stamina rather than raw size or weight.
CharacterA featherweight, high-precision tool that rewards finesse, balance, and throttle control over outright power or comfort.
Not Ideal ForNot suitable for riders wanting highway speed, passenger capability, long-distance touring, or everyday road commuting.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Reviews

Total comments: 1
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MotorcycleDB Review

The 2021 Sherco 125 ST Factory motorcycle is a top-of-the-line off-road bike designed for maximum performance. With its powerful 125cc engine, advanced suspension system, and lightweight design, this bike is perfect for navigating challenging terrain with ease. The Factory edition also comes with premium components, such as a full FMF exhaust system and high-performance braking system, making it a standout choice for professional riders and experienced enthusiasts. Overall, the 2021 Sherco 125 ST Factory motorcycle offers top-tier performance and cutting-edge features that set it apart from the competition. Whether you're hitting the trails for a weekend adventure or competing in a race, this bike delivers the power, agility, and durability needed to tackle any off-road challenge. With its stylish design and top-notch engineering, the Sherco 125 ST Factory is a must-have for riders who demand the best in off-road performance.
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