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Description
FEATURES
- Machined and knurled 6061 billet aluminum
- Removable end cap allows handguard installation without the hacksaw
- Lightweight, removable cams are compatible with G2 throttle systems
- Better accuracy and more applications than the competition
- Made in the U.S.A.
Technical Specifications
- MFG. Part Number M40-300
Vehicle Information
BETA EVO 300 Dirt Bike (2009-2026)
The Beta EVO 300, produced from 2009 to 2026, is a renowned trials motorcycle available in both 2-stroke and 4-stroke configurations. It is engineered for exceptional torque, smooth power delivery, and precise control, essential characteristics for trials riding. Over its production, the EVO 300 has been offered in various trims, including the standard EVO, the 4T for 4-stroke models, the smoother 2T SS, and performance-oriented "Factory" editions. The "Sport" trim, offered around 2014-2015, added features like a larger fuel tank and handguards. A significant platform change occurred in 2026: the "EVO" name for 2-stroke models was retired and replaced by the all-new "Sincro" platform. This redesign introduced a hydroformed aluminum frame, a new 2-stroke engine, a 6-speed gearbox, and updated suspension. The Sincro line includes base, SS, and Factory variants. The 4-stroke EVO 300 model continues to be available alongside the new Sincro 2-stroke range. Q: Is the Beta EVO 300 compatible with [specific part name]?
A: To ensure perfect compatibility for your Beta EVO 300, please use the year and edition selector on this page.
Maintenance
| Component | Interval | Details |
| Oil Filter | Every 6,000 km (4-stroke models) | 2-stroke models do not have a separate engine oil filter. For 4-strokes, clean mesh filters and replace paper filter at each oil change. |
| Spark Plug | Inspect and replace as needed; every 30-60 hours for some 4-stroke models | |
| Air Filter | Clean after every ride or aggressive use | Clean, dry, and oil the filter. For aggressive or race-level riding, clean every 5-15 hours. |
| Coolant | Inspect level regularly; replace every 12 months or 60-90 hours for some 4-stroke models | Check level when the engine is cold and top up if necessary. |
| Gearbox Oil | First change at 5 hours (2-stroke); then every 10-15 hours or 6,000 km / 12 months (2-stroke); every 6,000 km or 15-30 hours (4-stroke) | For 4-stroke models, engine oil often also lubricates the gearbox. |