Pit bikes rely on a steady supply of clean air to perform reliably on trail and track. A quality air filter protects the engine from dirt while preserving strong throttle response. In this guide, we evaluate five popular pit bike air filters that cover 35mm, 38mm, and 48mm carburetor fittings. Each option balances filtration efficiency, durability, and ease of installation for common models from Tao Tao, Coolster, Apollo, Baja, SSR, Roketa, and more. Whether you ride for fun or practice, the right filter can improve airflow and engine life without adding complexity to maintenance.
| Product | Brand | Size | Compatibility | Highlights |
|---|---|---|---|---|
| HIAORS 35mm Air Filter | HIAORS | 35mm | 50cc–125cc pit bikes (Tao Tao, Coolster, Apollo, Baja, SSR, Roketa, X-pro, Kymco, Vitacci, Peace Sports) | Durable metal frame with rubber seal; improved airflow; long service life |
| NIBBI Racing Air Filter (48mm) | NIBBI | 48mm | Most dirt bikes and pit bikes using 48mm carburetors; YAMAHA, HONDA, SUZUKI, KAWASAKI styles | 360° air intake; high flow; aluminum/ABS construction |
| HIAORS 38mm Bent Tube Filter | HIAORS | 38mm | 110cc–125cc CRF SSR Sunl Taotao pit bikes; ATVs and quads | Bent tube design; compact fit; straightforward install |
| Baitaihem POD Air Filter Pack | Baitaihem | 38–54mm (multi-pack) | Chinese pit bikes, go-karts, ATVs with 38–54mm fittings | Ribbed pod mounts for secure mounting; multiple sizes in one pack |
| CIOM 35mm Air Filter | CIOM | 35mm | 50cc–125cc ATVs and dirt bikes; various Chinese-made machines | Inside 35mm, overall 74mm diameter; compact and efficient |
HIAORS 35mm Air Filter For Pit Bikes
This HIAORS 35mm air filter is designed for a broad range of 50cc to 125cc engines commonly found on pit bikes. The 35mm size fits many standard carburetor housings, making it a straightforward upgrade for Tao Tao, Coolster, Apollo, and similar models. The filter uses a robust metal frame with a rubber seal to keep dust out and maintain a tight fit. The combination supports better airflow without compromising filtration, which helps throttle response and engine efficiency during long rides or quick laps on the track.
- Fitment includes 49cc–125cc engines with common 35mm carburetors
- Durable metal frame and rubber seal for a tight, dust-free seal
- Improved airflow supports throttle responsiveness and power delivery
- Long service life suitable for regular rider maintenance
When mounting, confirm carb size matches the 35mm port and check for compatible ignition and air intake components. Regular cleaning extends life; wash or replace as part of routine air system maintenance. Installation is typically simple and quick for riders with basic shop skills.
NIBBI 48mm Universal Air Filter For Dirt Bikes
The NIBBI 48mm universal air filter is built for larger carb ports and is a solid option for riders seeking maximal airflow. The cone-style design supports 360-degree intake and helps deliver cleaner air to the engine, boosting horsepower and torque while maintaining fuel efficiency. Construction uses durable aluminum alloy and ABS for a tough exterior that stands up to trail grit and routine maintenance. This filter is particularly suitable for dirt bikes, pit bikes, and scooters that use a 48mm carburetor or compatible adapters.
- Cone-style design with 360-degree air intake
- Internal diameter approximately 48mm; verify carb size before ordering
- Aluminum alloy and ABS construction for durability
- Washable, reusable filter media for long-term value
Before purchasing, carefully confirm your carb size (most 48mm units require an exact match or adapter). Proper installation ensures sealing and performance gains, while regular cleaning prevents filtration loss and builds up horsepower and torque over time.
HIAORS 38mm Bent Rubber Tube Air Filter
This bent 38mm air filter from HIAORS is tailored for 110cc to 125cc CRF, SSR, Sunl, Taotao, and similar pit bikes. The bent rubber tube design helps it fit tight engine bays where straight filters may not clear shrouds or frames. The 38mm diameter is common for many carburetors in this displacement range, offering a balance between compact fit and sufficient airflow. The package typically includes one filter compatible with standard mounting hardware and provides a reliable seal to reduce dirt ingestion during dirt riding or jumping sessions.
- 38mm diameter fits many 110cc–125cc engines
- Bent rubber tube enables easy mounting in tight spaces
- Compatible with common pit bike configurations and ATVs
- Simple installation with solid sealing performance
When installing, ensure the bend does not kink the intake hose or restrict airflow. Regular inspection of the rubber tube for wear helps prevent leaks, and routine cleaning preserves maximum airflow and engine efficiency over time.
Baitaihem POD Air Filter Pack
The Baitaihem POD air filter pack offers a practical solution for riders needing multiple size options in one purchase. The pod-style filters provide a compact fit with secure internal ribbing that helps mount to carburetors without slippage. The pack covers 38mm to 54mm diameters, including several commonly used sizes on Chinese pit bikes, go-karts, ATVs, and dirt bikes. The pod construction provides a balance of protection against dust and simplicity of maintenance, making it a good value for riders who customize engines across a fleet of bikes.
- Internal ribbed pod mounting supports secure fitting
- Sizes include 38mm, 39mm, 40mm, 42mm, 46mm, 48mm, 50mm, 52mm, 54mm
- Widely compatible with Chinese pit bikes and ATVs
- Dust resistance and ease of cleaning with reusable media
Choose a size that matches your carb port and consider ordering a couple of different diameters for future compatibility. The compact pod design supports quick swaps during maintenance or while troubleshooting air intake issues on the trail.
CIOM 35mm Air Filter For Pit Bikes
The CIOM 35mm air filter targets a broad range of Chinese-made pit bikes and ATVs with 35mm intake ports. The inside diameter is 35mm, while the overall diameter reaches about 74mm, making it suitable for compact engine bays where space is at a premium. This filter is a popular, affordable option for 50cc–125cc models and is designed to fit PZ16, PZ19, and PZ20 carburetors. The compact size helps reduce restriction while maintaining essential filtration.
- Inside diameter about 35mm; overall 74mm diameter
- Compatible with PZ16, PZ19, PZ20 carburetors
- Suitable for 50cc–125cc dirt bikes and ATVs
- Cost-effective option with reliable filtration
When selecting this filter, verify that your carburetor matches the 35mm port and that the overall dimensions fit the bike’s air intake housing. Regular checks ensure the seal remains intact and the air passage stays clear between rides.
NIBBI 48mm Dirt Bike Air Filter High Performance
This NIBBI 48mm filter is designed to boost air intake and acceleration for dirt bikes, pit bikes, and mini bikes that use a 48mm carburetor. The filter media is washable and reusable, supporting long-term value. The clamp-on design allows quick installation and removal for cleaning, while the media’s surface area helps deliver more air to the engine without letting dust bypass filtration. It’s a practical upgrade for riders seeking noticeable gains in throttle response, especially in dusty conditions.
- Designed to increase air intake and acceleration
- Clamp-on washable and reusable filter media
- Suitable for HONDA, YAMAHA, SUZUKI, KAWASAKI, SSR and other brands with 48mm carbs
- Durable build with attention to sealing and airflow
Before purchasing, confirm carburetor size and the mounting compatibility with your bike’s intake setup. Regular cleaning preserves performance and helps maintain consistent power output on rough terrain.
Buying Guide
Key Purchase Considerations
Choosing the right air filter involves balancing size, fitment, and filtration efficiency. Start with the carb size used by your bike, as 35mm, 38mm, and 48mm are common but not universal. Consider whether the bike’s airbox or filter housing accepts a pod-style or cone-style filter. Durability matters, especially for off-road use; look for a sturdy frame, sealed mounting, and materials that resist wear from dust and moisture. Finally, factor in maintenance: washable filters save money over time but require regular cleaning to maintain performance.
Size And Carb Compatibility
Size compatibility is critical. A filter that’s too small creates a bottleneck, while one that’s too large may not seal properly or fit the housing. Always measure the intake port and compare with the filter’s inside diameter. Carburetor diameter is often listed as 35mm, 38mm, or 48mm in product descriptions. If a filter is sold as universal, verify adapters or mounting hardware are included. In general, match 35mm for smaller 50cc–125cc bikes, 38mm for mid-range engines, and 48mm for larger pit bikes and dirt bikes with bigger carb ports.
Filtration Quality And Airflow
Filtration quality and airflow work together. A filter with a robust outer frame and a tight seal reduces unfiltered air and dust ingestion. A larger surface area and proper pleating or media design increase airflow, improving throttle response and engine efficiency. Note that some premium filters are washable and reusable, offering long-term savings. If you ride in dusty environments, prioritize filtration efficiency while ensuring airflow remains sufficient for your engine’s displacement and power target.
Materials, Sealing, And Mounting
Durable materials—such as metal frames with rubber gaskets or high-quality plastics—provide reliable sealing against air leaks. A good seal protects performance and prevents dirt intrusion. Check mounting hardware compatibility, including clamps, hoses, and boss fittings. Bent or compact designs can help fit tight engine bays, but ensure they don’t restrict airflow or rub against moving parts. Maintenance-friendly designs that allow easy cleaning or replacement can save time during servicing.
Value, Compatibility, And Longevity
Value comes from a filter that fits your bike, performs consistently, and lasts through multiple rides. While premium filters may cost more upfront, washable designs can reduce ongoing expenses. Review compatibility lists to ensure the filter works with your bike’s carburetor type and airbox. Consider packs or multi-size options if you own multiple bikes or anticipate future upgrades. A well-chosen filter protects engine longevity and maintains predictable performance across varied riding conditions.
Quick Comparison At A Glance
| Filter Type | Diameter | Best For | Maintenance | Notes |
|---|---|---|---|---|
| Cone Style | 48mm | Higher displacement pit bikes | Reusable, moderate cleaning | High airflow, good for performance |
| Pod Style | 35–54mm | Multiple bikes or tight spaces | Variable depending on media | Great value in multi-pack options |
| Bent Tube | 38mm | Tight engine bays | Moderate cleaning | Easy fit where straight filters won’t |
Across these options, the best choice hinges on your bike’s carb size, space constraints, and maintenance preferences. For frequent dusty riding, prioritize a filter with superior sealing and a larger filtration area. If you own multiple small bikes, a pack offering several sizes can simplify upgrades and replacements. Always verify carb compatibility and install according to the manufacturer’s guidelines to maximize the filter’s effectiveness and engine protection.