PWK Flat Slide Racing Carburetor with Air Horn | 2/4 Stroke Performance Upgrade

This PWK-series flat slide racing carburetor, equipped with a high-flow red air horn (velocity stack), is a professional-grade performance upgrade for 2-stroke and 4-stroke powersport engines. The integrated air intake horn optimizes incoming airflow and improves volumetric efficiency, delivering sharper throttle response, enhanced mid-to-high RPM power output and more efficient fuel atomization across the entire operating range.

Precision-manufactured from high-grade aluminum alloy with tight dimensional tolerances, it is a trusted supply choice for motorcycle parts distributors, racing teams, off-road repair shops and performance tuning businesses worldwide. It supports full fuel system adjustability and direct-fit installation, suitable for both racing competition use and street legal performance modification projects.

• High-Flow Air Horn Design: The red velocity stack smooths and accelerates intake airflow, reducing turbulence and increasing air charge efficiency, which translates to noticeable power gains especially at mid and high engine speeds.
• Racing Flat Slide Structure: Compared with conventional round-slide carburetors, the flat throttle valve minimizes intake resistance, achieving instantaneous throttle response and linear power delivery for competitive riding and acceleration.
• Fully Tunable Fuel System: Features replaceable main jets, pilot jets and an adjustable needle clip position, with external idle and mixture adjustment screws. Allows precise air-fuel ratio tuning to adapt to different altitudes, temperatures and engine modification levels.
• Premium Build Quality: High-density die-cast aluminum body with precision machining and corrosion-resistant finish. Internal components are manufactured to strict tolerances for reliable sealing and stable performance under high vibration and harsh off-road conditions.
• Multiple Caliber Options: Available in 24mm / 26mm / 28mm / 30mm / 32mm / 34mm venturi sizes, compatible with engine displacements from 50cc up to 350cc to cover most common small-displacement performance models.
• Ready-to-Install Package: Comes pre-assembled with fuel line, adjustment knobs and air horn. Standard mounting interface fits most PWK-spec intake manifolds, requiring no extra modification for installation.

This universal PWK racing carburetor fits a wide range of powersport vehicles and small engine equipment, including but not limited to:

• Motocross bikes, enduro bikes, dirt bikes and pit bikes
• All-terrain vehicles (ATVs), quad bikes and sport UTVs
• Racing go-karts, shifter karts and mini bike projects
• High-performance 2-stroke scooters and upgraded mopeds
• Custom motorcycle builds and engine swap projects

Note: Please confirm required venturi size and mounting dimensions before ordering. Custom jet configurations, color finishes and branding options are available for bulk orders.

• Flexible Order Terms: Low MOQ for sample testing and trial orders; tiered wholesale pricing for volume purchases to maximize your profit margin.
• OEM & Customization Support: Private logo engraving, custom air horn color, dedicated jet tuning and retail packaging are available for qualified bulk orders to support your brand building.
• Stable Supply Capacity: Sufficient ready stock for standard calibers with fast lead times; mature production lines ensure on-time delivery for long-term cooperative partners.
• Strict Quality Control: 100% air tightness test, flow calibration and appearance inspection before shipment to minimize after-sales issues for your business.
• One-Stop Procurement: Full range of matching parts including rebuild kits, replacement jets, intake manifolds and fuel lines available, reducing your sourcing and logistics costs.

We are a specialized manufacturer and global exporter of motorcycle power system components, focused on delivering reliable performance parts and efficient supply solutions for B2B clients worldwide.

• Full-process quality management from raw material sourcing to finished product testing
• Deep understanding of global aftermarket and racing market demands
• Professional technical team to provide compatibility consultation and tuning guidance
• Responsive sales support with fast quotation and efficient order processing
• Long-term partnership oriented policy to support your business growth