This page covers the 2025 models of the GasGas EC 250 and the Sherco 300 SEF Factory. Readers may sometimes refer to older or mistaken names like the GasGas EC 200 or Sherco SEF 300, but the current 2025 model names and specifications are used here.
Who Each Bike Suits
The GasGas EC 250 suits riders looking for a two-stroke platform. It serves as the smaller of the brand's full-size two-stroke enduro bikes, providing a lighter-revving engine character than its larger EC 300 sibling.
The Sherco 300 SEF Factory is a French-built four-stroke enduro bike that fits between Sherco's 250 and 450 four-strokes. It is built for riders who prefer the traction and power delivery of a mid-sized four-stroke engine.
Key Differences
The most significant difference is the engine platform. The GasGas EC 250 uses a 249 cc two-stroke engine with throttle-body fuel injection. The Sherco utilizes a 303.7 cc four-stroke engine, also with fuel injection. On the trail, a two-stroke typically offers quick, snappy acceleration, while a four-stroke delivers broader, more predictable traction. Neither manufacturer publishes horsepower figures for these models.
Suspension hardware is completely different. The GasGas is equipped with a WP XPLOR 48 mm open-cartridge fork (300 mm travel) and a WP XACT shock with linkage (300 mm travel). The Sherco uses KYB components, featuring a 48 mm closed-cartridge fork (300 mm travel) and a KYB shock with 330 mm of rear wheel travel.
Regarding weight, the GasGas EC 250 is listed at 107.6 kg (measured without fuel). Sherco does not publish a verified weight for the 300 SEF Factory, so the weights cannot be directly compared.
For ergonomics and dimensions, the Sherco has a slightly lower seat height at 950 mm compared to the GasGas at 956 mm. The Sherco also carries more fuel, with a 9.8 L tank against the GasGas's 9 L capacity. Ground clearance is nearly identical, with the Sherco at 355 mm and the GasGas at 354 mm. Both motorcycles utilize 6-speed gearboxes and electric starters.
Finally, pricing differs significantly. The 2025 GasGas EC 250 has a US list price of $10,499 (before freight), while the Sherco 300 SEF Factory lists at $12,499.
Which Should You Buy?
Choosing between these two comes down to your engine preference and budget. If you want a two-stroke with open-cartridge suspension at a lower initial purchase price, the GasGas EC 250 is the choice. If you prefer a mid-sized four-stroke engine and are willing to pay more for closed-cartridge KYB suspension out of the crate, the Sherco 300 SEF Factory is the route to take.
Frequently Asked Questions
Which bike has a lower seat height?
The Sherco 300 SEF Factory has a slightly lower seat height at 950 mm. The GasGas EC 250 measures 956 mm.
Which motorcycle is lighter?
The GasGas EC 250 weighs 107.6 kg without fuel. Because Sherco does not publish an official weight for the 300 SEF Factory, a direct comparison is not possible.
Do these bikes have carburetors?
No. Both motorcycles utilize fuel injection systems. The GasGas specifically uses throttle-body fuel injection for its two-stroke engine.
What are the differences in suspension travel?
Both bikes have 300 mm of front fork travel. In the rear, the Sherco has 330 mm of travel, while the GasGas has 300 mm.