Dirt Bike Miscellaneous Carburetion Parts

Carb hesitation and bog kill performance when you need it most. The Boyesen Quickshot 3 delivers instant throttle response through precise fuel metering, eliminating that critical delay between twist and acceleration. If you're running a Keihin FCR carb,...

If you're serious about extracting maximum performance from your 2-stroke or 4-stroke engine, the BOYESEN Power Wing PW-40 delivers measurable gains in horsepower and torque without requiring jetting adjustments. The precision-engineered wing channel...

If you're running a Keihin FCR carburetor and experiencing bog on throttle apply or struggling with hot starts, the Boyesen Quick Start -3 APC-3QS solves both problems with a single, bolt-on upgrade. This investment-cast check valve assembly delivers...

Carburetor hesitation and bog rob you of throttle response when you need it most. The BOYESEN Quickshot 3 APC-3 eliminates that dead spot with a high-volume vertical check valve that meters fuel with precision across all throttle conditions. Whether...

The BOYESEN Power Wing PW-43 is engineered to optimize fuel atomization in your carburetor's needle jet area without altering your existing jetting curve—meaning measurable gains in horsepower and torque without costly retuning. Its aerodynamic design...

The BOYESEN Power Wing is engineered to unlock hidden performance in your YZ250F by optimizing fuel atomization at the needle jet without requiring jetting adjustments. This precision-designed intake component increases both horsepower and torque across...

If you're running a KX, RM, or YZ250 two-stroke, intake tract efficiency directly determines your power output—and the BOYESEN Power Wing is engineered to optimize that critical zone. By strategizing airflow around the needle jet without retuning your...

The BOYESEN Power Wing transforms your CRF450's intake efficiency by optimizing airflow dynamics at the needle jet without requiring jetting adjustments. This precision-engineered component delivers measurable horsepower and torque gains across your...

If you're serious about extracting every bit of performance from your Honda 250/450, the BOYESEN Power Wing is a precision tuning component that belongs in your carburetor. This CNC-engineered wing channel optimizes air velocity through the needle jet...

If you're running a CRF150R and serious about extracting every bit of performance from your engine, the BOYESEN Power Wing is a straightforward bolt-on solution that delivers measurable gains in horsepower and torque. By optimizing the fuel delivery at...

Throttle hesitation and engine bog kill performance when you need it most. The BOYESEN Quickshot 2 APC-2 eliminates that delay with a patent-pending design that delivers instant response to every throttle input, giving you crisp acceleration from idle...

The BOYESEN Power Wing is engineered to unlock measurable gains in horsepower and torque by optimizing fuel atomization at the needle jet without disrupting your bike's jetting curve. This precision-designed component works across both 2-stroke and...

If you're running a YZ or WR and leaving power on the table, the BOYESEN Power Wing is your answer. This precision-engineered intake component optimizes fuel atomization and air velocity without requiring jetting changes, delivering measurable gains...

Keeping moisture and debris out of your air box is critical to engine longevity and peak performance—corrosion and water ingestion are silent killers that compromise airflow and fuel efficiency. The NO TOIL Air Box Cover WK170-45 pairs with your regular...

Keeping moisture out of your air box during cleaning or storage prevents corrosion and contamination that can compromise engine performance. The NO TOIL Air Box Cover WK180-53 pairs with a quality cleaning regimen to ensure your intake system stays...

Keeping water and contaminants out of your engine is non-negotiable for reliable performance and longevity. The NO TOIL Air Box Cover WK140-46 provides a simple yet effective barrier during washing, storage, and high-moisture riding conditions. Pair it...

Protecting your engine from water ingress is non-negotiable during bike washes and wet-weather riding. The NO TOIL Air Box Cover WK150-46 seals your air intake system, preventing water and contaminants from reaching critical engine components. Pair this...

Off-idle throttle response is critical for both track performance and street drivability—hesitation or lean conditions at partial throttle waste power and compromise control. The WORKS CONNECTION Fuel Mixture Screw delivers tool-free, on-the-fly tuning...

Inconsistent fuel delivery compromises both performance and engine reliability—especially under high RPM conditions where fuel pressure fluctuations can cause lean-running cylinders and uneven power delivery. The S&S CYCLE Fuel Rail Kit eliminates these...

Precise fuel-air mixture control is the foundation of engine performance and reliability. The TMV Keihin Fuel Mixture Screw gives you the ability to fine-tune your carburetor's fuel delivery, ensuring optimal combustion across the RPM range. Whether...