The 2026 Sherco ST Factory 300 is the most powerful and competition-focused model in the Factory range. Built for experienced riders tackling the biggest sections, national events and expert-level terrain, the 300 delivers maximum torque, instant drive and relentless capability.

For 2026, Sherco haven’t just increased performance, they’ve refined it. The result is a more flexible, more controllable 300 that maintains its explosive potential while offering improved smoothness and precision.

What’s New for 2026

Sherco have introduced major updates to improve flexibility, throttle response and overall rideability:

New graphics kit
New engine mapping designed to smooth engine behaviour
Decompressed cylinder head (250cc & 300cc) for improved flexibility
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 longer gear ratio (400 D FIM TR rear sprocket & 101-link chain)
New fuel hose for easier disassembly
OXIA handlebars
New brake pedal axle
New throttle body cam

The decompressed cylinder head is a key update for 2026, improving traction and flexibility at lower revs, giving riders more control without losing the 300’s signature punch.

Engine & Performance

The 294cc 2-stroke engine delivers the strongest torque output in the range. It’s designed for riders who demand instant response and the ability to clear large obstacles with authority.

Thanks to the revised mapping, injection system and throttle cam, the power delivery is now more progressive and predictable, especially in tight, technical sections.

Electronic fuel injection ensures consistent performance in all conditions, while the longer FIM-spec gearing enhances control and compliance for competition use.

This is a bike built for riders who know how to use power and want the most available.

Factory-Level Chassis & Suspension

The ST Factory 300 sits on Sherco’s proven chrome-moly tubular chassis, delivering exceptional feedback and front-end accuracy.

Suspension specification includes:

Aluminium Tech Ø39mm front fork
Reiger 2-way rear shock
Progressive linkage rear suspension
With 165mm of travel front and rear, the bike remains composed when landing from large steps or attacking aggressive terrain.
Morad aluminium rims and high-performance hydraulic brakes complete a true Factory-level competition package.

Key Features

294cc 2-stroke engine with electronic injection
Decompressed cylinder head for improved flexibility
Updated 2026 mapping for smoother power delivery
Injection wake-up button
New throttle body cam
New BIG FLOW fuel pump
Longer FIM-spec rear gearing
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 300 Factory?

The 300cc is ideal for:

Expert and elite competition riders
Riders tackling large obstacles and high-level sections
Those wanting maximum torque and instant lift
Experienced riders confident managing stronger power delivery

The 2026 updates make the 300 more refined without reducing its edge, giving riders more control when needed and full power when demanded.

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 300.

2026 Sherco ST Factory 300cc Trials Bike