Comparing the 2025 Rieju MR 300 Racing and the Sherco 300 SEF Factory comes down to a fundamental choice in engine types and fuel delivery. Both European-built machines aim to tackle technical enduro riding but go about it in different ways.
Who Each Bike Suits
The Rieju MR 300 Racing is a Spanish-built two-stroke designed for riders who prefer the snap and feel of a 299.3 cc carbureted engine. Having both an electric and kick starter provides a manual backup on the trail, which appeals to traditionalists who want peace of mind in deep woods.
The Sherco 300 SEF Factory is a French-built four-stroke with a 303.7 cc engine sitting between the brand's 250 and 450 models. Featuring fuel injection and an electric starter, it suits riders who prefer the linear power delivery of a four-stroke without having to manage carburetor jetting for different elevations.
Key Differences
- Engine Type and Fuel System: The Rieju uses a 299.3 cc 2-stroke engine fed by a carburetor. The Sherco uses a 303.7 cc 4-stroke engine equipped with fuel injection.
- Weight: The Rieju is listed at 105 kg (dry). The Sherco's weight is not published in a verified source, so the two cannot be directly compared.
- Starting System: The Rieju features both an electric starter and a kick starter. The Sherco relies entirely on an electric starter.
- Suspension: Both bikes share a KYB 48 mm closed-cartridge front fork with 300 mm of travel. Out back, both use a KYB shock with a linkage system, though the Sherco specifies 330 mm of rear travel.
- Price: The Sherco has a confirmed 2025 US list price of $12,499 (before freight). The Rieju is sold in the US, but the 2025 US list price is not confirmed.
- Shared Specs: Both machines use a 6-speed gearbox and hold 9.8 L of fuel.
Which Should You Buy?
Choosing between these two 2025 enduro models depends largely on whether you want a two-stroke or a four-stroke. Neither manufacturer publishes horsepower figures for these bikes. If you prefer a fuel-injected four-stroke with a known US price tag, the Sherco 300 SEF Factory is the path to take. If you favor the mechanical simplicity of a carbureted two-stroke and like having a backup kick starter, the Rieju MR 300 Racing fits the bill.
Frequently Asked Questions
Are these bikes two-strokes or four-strokes?
The Rieju MR 300 Racing is a two-stroke, while the Sherco 300 SEF Factory is a four-stroke. Sherco does make a 300 two-stroke, but it is a separate model named the 300 SE Factory.
Do they use carburetors or fuel injection?
The Rieju MR 300 Racing uses a carburetor to deliver fuel to its 2-stroke engine. The Sherco 300 SEF Factory utilizes fuel injection for its 4-stroke engine.
Which bike is lighter?
The Rieju has a listed dry weight of 105 kg. Because Sherco does not publish a verified weight for the 300 SEF Factory, we cannot declare which bike is lighter.
Do they have kick starters?
The Rieju MR 300 Racing comes with both an electric starter and a kick starter. The Sherco 300 SEF Factory comes only with an electric starter.