Fuel & Air

Boyesen Rad Valve Rad42E

Developed with Factory Yamaha, Pro Circuit, Factory Kawasaki of Europe, Factory KTM and top pros like Jeremy McGrath, Sebastian Tortelli and many others Maintain flow velocity through the valve and redirect intake charge for even distribution to intake...

Boyesen Radiator Valve Rad01J

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports Made of one-piece aluminum castings and bolts in easily; no modifications necessary Provide quicker, sharper throttle response and more...

Boyesen Radiator Valve Rad34J

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports Made of one-piece aluminum castings and bolts in easily; no modifications necessary Provide quicker, sharper throttle response and more...

Boyesen Radiator Valve Rad33J

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports Made of one-piece aluminum castings and bolts in easily; no modifications necessary Provide quicker, sharper throttle response and more...

Boyesen Radiator Valve Rad02I

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports Made of one-piece aluminum castings and bolts in easily; no modifications necessary Provide quicker, sharper throttle response and more...

Boyesen Radiator Valve Rad33I

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports Made of one-piece aluminum castings and bolts in easily; no modifications necessary Provide quicker, sharper throttle response and more...

Boyesen Radiator Valve Rad24K

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports Made of one-piece aluminum castings and bolts in easily; no modifications necessary Provide quicker, sharper throttle response and more...

Boyesen Radiator Valve Rad21J

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports Made of one-piece aluminum castings and bolts in easily; no modifications necessary Provide quicker, sharper throttle response and more...

Boyesen Radiator Valve Rad12I

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports Made of one-piece aluminum castings and bolts in easily; no modifications necessary Provide quicker, sharper throttle response and more...

Boyesen Radiator Valve Rad11K

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports Made of one-piece aluminum castings and bolts in easily; no modifications necessary Provide quicker, sharper throttle response and more...

Boyesen Radiator Valve Rad01I

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports Made of one-piece aluminum castings and bolts in easily; no modifications necessary Provide quicker, sharper throttle response and more...

Boyesen Radiator Valve Rad02H

Maintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports Made of one-piece aluminum castings and bolts in easily; no modifications necessary Provide quicker, sharper throttle response and more...