Aftermarket air filter for small-displacement bikes and scooters designed to boost airflow while trapping dirt and debris. Owners wanting a simple, maintainable upgrade that sharpens throttle response and eases cleaning will find value in a washable foam option. Is the WOOSTAR Air Filter Foam the right fit for 125–200cc machines and everyday riders?
⚡ At a Glance
- • Filtration Efficiency: High airflow foam balances particle capture with unrestricted intake
- • Best for: Owners of 125–200cc CRF, KLX and similar mopeds, scooters and pit bikes
- • Not ideal for: Bikes requiring a bespoke OEM-shaped intake or non-clamp mounts
Clamp-on foam fits a 42mm (1.7") intake at a 45 degree angle and suits 125–200cc engines. Washable, reusable construction aims for straightforward upkeep and extended service life.
Improved engine breathing – With 42mm clamp-on intake
A 42mm (1.7") intake neck and 45 degree angled connection guide more air through the foam while a clamp-on mounting secures the seal. Foam porosity supports higher flow compared with tight-paper elements while still trapping contaminants.
Greater airflow helps the engine draw air more freely, which can sharpen throttle response and maintain steady running at varied revs. Secure clamp-on fit reduces the chance of leaks or displacement during normal riding.
Sharper throttle response – With high-flow foam construction
Open-cell foam structure allows faster passage of air into the intake while maintaining filtration by capturing dirt within the foam layers. The design prioritises flow without abandoning particulate control.
Faster transient throttle response is noticeable during acceleration and overtakes, improving rideability on trails and street. Riders who tune or modify small-displacement engines benefit from the less restrictive intake.
Low maintenance and long life – With washable, reusable foam
Washable foam can be cleaned and re-oiled (if required by the user) rather than replaced, and the clamp-on method simplifies removal and refitting. Manufacturer notes and user feedback highlight durable materials intended for repeated servicing.
Routine cleaning keeps filtration effective and avoids repeated purchases of disposable elements. Practical for riders who service their own machines or prefer a cost-effective, reusable upgrade.
✨ The 4 Key Reasons for WOOSTAR Air Filter Foam
- Secure 42mm clamp-on fit - Keeps the intake sealed under normal riding conditions
- High-flow foam construction - Enhances airflow for crisper throttle response
- Washable and reusable design - Cuts ongoing parts replacement and waste
- 45 degree angled intake - Easier fitment in tight engine bay or frame positions
📋 Technical Details at a Glance
- Category: Automotive Parts and Accessories
- Type: Foam Air Filter
- Brand: WOOSTAR
- Fitment diameter: 42mm (1.7")
- Angle: 45 degree angled neck
❓ Frequently Asked Questions
Q: Will this filter fit my 150cc bike?
A: Compatibility lists 125–200cc engines including 150cc and mentions CRF and KLX styles; verify intake diameter and model before ordering.
Q: Is the foam washable and reusable?
A: Yes, the description specifies a clamp-on washable and reusable foam filter intended for cleaning and repeated use.
Q: Will the filter improve engine performance?
A: User feedback notes improved airflow, sharper throttle response and better overall engine performance after fitting the filter.
🏆 Our Verdict
The WOOSTAR Air Filter Foam suits owners of 125–200cc CRF, KLX and similar bikes who want a simple airflow-focused upgrade. Reusable washable foam and a 42mm clamp-on fit make maintenance straightforward while improving throttle feel. Affordable and durable with routine cleaning, the filter represents a practical long-term upgrade for everyday riders and DIY mechanics.
