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Air and Fuel› Intake Manifolds and Components

Boyesen

MOTORCYCLE RAD VALVE

Name: MOTORCYCLE RAD VALVE
Brand: Boyesen
SKU: RAD-03A

$179.95 $144.95 Save $35.00

SKU: RAD-03A

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Overview

The Boyesen RAD-03A is a high-performance reed valve assembly designed for the Honda CR500R 1990-2001. This upgrade features an aero-form reed valve that corrects common issues with existing designs, helping to maintain flow velocity and ensure even distribution of the intake charge to the ports.

Constructed from a one-piece aluminum casting, it simplifies installation by eliminating the need for trimming manifolds or inserting plastic pieces. The package includes Boyesen Pro Series RAD Reeds, contributing to a sharper throttle response and increased horsepower across the RPM range.

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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.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	Boyesen
Part Number	RAD-03A
Category	Intake/Carb/Fuel System

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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