Sherco 125 ST Racing - 2021 Specifications and Reviews

The 2021 Sherco 125 ST Racing is a lightweight trial motorcycle designed for competitive and intermediate riders seeking precision handling in technical terrain. Its liquid-cooled two-stroke engine delivers responsive power with excellent maneuverability, while the hydraulic clutch and five-speed transmission provide smooth control over obstacles and demanding courses.

2021
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General information

CategoryTrial
Year2021
ModelSherco 125 ST Racing

Engine and Transmission Specifications

Exhaust systemStainless steel exhaust pipe with an integrated aluminium muffler
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 black 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
Front wheel travel165 mm (6.5 inches)
Front SuspensionSteel 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

Track5%
City5%
Cornering30%
Daily Riding5%
Touring3%
Passenger0%

Rider Profile

Best ForThis is a specialist trial machine best suited to riders with some off-road balance skills already, or dedicated beginners fully committed to learning the discipline, rather than general road riders.
PurposeBuilt purely for technical trial competition and obstacle-based riding, using extreme agility and low weight rather than power or speed to conquer rocks, logs, and steep terrain.
Rider FitRiding demands strong core balance, standing control, and active body movement rather than raw strength, with a tall seat and no passenger accommodation reinforcing its solo, stand-up riding style.
CharacterA light, nimble, purpose-built two-stroke trial bike that rewards precision and finesse over brute force or outright speed.
Not Ideal ForThis is not suitable for riders wanting a comfortable commuter, a highway tourer, or anyone seeking outright speed and passenger capability.

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 Racing is a top-of-the-line motorcycle designed for riders who demand power, precision, and control. With its lightweight frame and powerful 125cc engine, this bike is built for speed and agility. Whether you're navigating tight turns or tackling rugged terrain, the Sherco 125 ST Racing delivers an exhilarating and responsive riding experience. Its sleek design and advanced features make it a standout choice for riders who want to take their performance to the next level. Sherco's attention to detail and commitment to quality are evident in every aspect of the 125 ST Racing. From its advanced suspension system to its cutting-edge electronics, this motorcycle offers unparalleled handling and performance. Whether you're a seasoned rider looking for a competitive edge or a newcomer eager to experience the thrill of off-road biking, the 2021 Sherco 125 ST Racing is a standout choice. With its combination of power, precision, and style, this bike is sure to impress even the most discerning riders.
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