The 2026 Sherco ST Factory 125 is built for riders stepping into serious competition. Lightweight, precise and incredibly responsive, the 125 Factory combines race-bred chassis development with a completely refined engine package for 2026.

Designed for youth riders progressing through the ranks and adults who value agility and control, the ST Factory 125 delivers smooth, usable power with outstanding balance, exactly what modern trials demands.

What’s New for 2026

Sherco have made major updates to improve engine behaviour, reliability and rideability:

New graphics kit
New engine mapping designed to smooth power delivery
New electronic injection system
Injection wake-up button to facilitate starting
New BIG FLOW fuel pump
New crankshaft
New piston pin
New wiring harness
New fuel hose for easier disassembly
OXIA handlebars
New brake pedal axle

The result? A more fluid, responsive and confidence-inspiring 125 than ever before.

Engine & Performance

At the heart of the 2026 ST Factory 125 is a refined 123.7cc 2-stroke engine featuring electronic fuel injection for precise throttle response and consistent performance in all conditions.

The updated mapping smooths the engine behaviour, making the bike easier to control in technical sections while still delivering the punch needed for bigger steps and obstacles.

Paired with Sherco’s lightweight chassis and premium Reiger suspension, the 125 feels incredibly agile — perfect for riders developing technique and precision.

Factory-Level Chassis & Suspension

The chrome-moly tubular frame delivers the rigidity and feel Sherco is known for, while the Tech aluminium front forks and Reiger 2-way rear shock ensure exceptional traction and control.

With 165mm of suspension travel front and rear, the ST Factory 125 absorbs impacts smoothly and maintains stability on the most technical terrain.

Lightweight Morad aluminium rims and high-performance hydraulic braking complete a race-ready package.

Key Features

123.7cc 2-stroke engine with electronic injection
Updated 2026 mapping for smoother engine behaviour
Injection wake-up button for easier starting
New BIG FLOW fuel pump
Reiger 2-way rear shock absorber
Aluminium Tech Ø39mm front fork
OXIA handlebars
Chrome-moly tubular chassis
Morad aluminium rims (21” front / 19” rear)
Stainless steel exhaust with aluminium silencer

Why Choose the 125 Factory?

The 125cc platform is ideal for:

Youth riders progressing to national competition
Club riders refining technique
Lightweight riders seeking maximum agility
Anyone who values precision over brute power

The 2026 model improves smoothness and throttle response, making it easier to ride at the limit without fatigue.

Available Now at Road and Trials

We are an authorised Sherco dealer based in Barnsley, South Yorkshire.

✔ Competitive pricing

✔ Finance available

✔ Nationwide delivery

✔ Part exchange welcome

✔ Expert trials support

Contact us today for availability, lead times or to reserve your 2026 Sherco ST Factory 125.

2026 Sherco ST Factory 125cc Trials Bike