Boyesen Motorcycle Rad Valve

BOYESEN engineers embarked on a mission to create a new lineage of aerodynamic intake technology by refining the primary performance factors required to increase peak horsepower through design innovation: Aerodynamic Surface Optimization, Model-Specific Reed Petal Tensioning, Material Fuel Resistance, and Multi-Stage Reed Timing. Together, these innovations create a new technological benchmark in intake performance.

• Boyesen Engineering would like to introduce the all-new RC2 Series Rad Valve, designed to increase overall horsepower and throttle response in the Yamaha YZ250/250X KTM65SX and Kawasaki KX85/100
• Each Boyesen RAD Valve is unique - tailor made to that model, year and displacement.
• The intake charge is redirected for more even distribution to the intake ports
• Constant flow velocity is maintained for instant throttle response and more horsepower
• One piece design and Easy installation

Shipping weight

1.01 lb

Package size

5.8 × 4.5 × 4.4 in

Salto part #

59-7712J

Boyesen part #

RAD-12J

UPC

804429506699

Special order from the distributor network. We email the ship date when you order.

Ground shipping is $14.95, free on orders over $150. Stock is re-checked with the warehouse before your card is charged.

Is it in stock?

It isn’t on a shelf at our primary warehouses right now, but it’s orderable through our extended distributor network. We confirm timing by email when you order, before anything is charged.

How fast will it get to me?

We confirm the ship date when you order. If anything changes, you hear it from us first.

Will it fit my machine?

The distributor doesn’t publish a vehicle fitment list for this part. Call the counter at 801-361-3010 with your year, make and model and we’ll check it with you before you order.

Is this genuine Boyesen?

Yes. It ships new from the same distributors the big online stores buy from — Boyesen part #RAD-12J.