Boyesen
Boyesen is a trusted performance brand known for its innovative intake systems, reed technology and engine components engineered for sharper throttle response and improved airflow. Their Rad Valve reed cages, Power Reeds and Super Stock kits unlock reliable power gains for dirt bikes, ATVs and two-stroke machines. Riders trust Boyesen for precision fitment, increased engine efficiency and race-ready durability. Upgrade with Boyesen to achieve cleaner combustion and stronger low- to mid-range performance.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
Boyesen - RAD20 - Rad Valve Reed Cage Assembly - Suzuki
Boyesen
$169.95Boyesen - RAD20 - Rad Valve Reed Cage Assembly - SuzukiFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$169.95 -
Out of stock
Boyesen - 665 - Power Reed Set - KTM
Boyesen
$28.95Boyesen - 665 - Power Reed Set - KTMFeaturesThey permit greater flow velocity over the entire range of operating pressuresIncreased performance from start-up to top accelerationSpecsUnitsSetRiding...$28.95 -
Boyesen - 688 - Power Reed Set - Kawasaki
Boyesen
$39.95Boyesen - 688 - Power Reed Set - KawasakiFeaturesThey permit greater flow velocity over the entire range of operating pressuresIncreased performance from start-up to top...$39.95 -
Boyesen - 692 - Power Reed Set - Kawasaki
Boyesen
$39.95Boyesen - 692 - Power Reed Set - KawasakiFeaturesThey permit greater flow velocity over the entire range of operating pressuresIncreased performance from start-up to top...$39.95 -
Boyesen - 676 - Power Reed Set - Suzuki
Boyesen
$39.95Boyesen - 676 - Power Reed Set - SuzukiFeaturesThey permit greater flow velocity over the entire range of operating pressuresIncreased performance from start-up to top accelerationSpecsBase...$39.95 -
Boyesen - PRO-180 - Pro Series Reed Set - Honda
Boyesen
$62.95Boyesen - PRO180 - Pro Series Reed Set - HondaFeaturesHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffers the quickest acceleration any reed can offer;...$62.95 -
Boyesen - RAD34B - Rad Valve Reed Cage Assembly - Yamaha
Boyesen
$179.95Boyesen - RAD34B - Rad Valve Reed Cage Assembly - YamahaFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - RAD21F - Rad Valve Reed Cage Assembly - Suzuki
Boyesen
$179.95Boyesen - RAD21F - Rad Valve Reed Cage Assembly - SuzukiFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - RAD-41C - Rad Valve Reed Cage Assembly - Husqvarna/KTM
Boyesen
$179.95Boyesen - RAD41C - Rad Valve Reed Cage Assembly - Husqvarna/KTMFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response...$179.95 -
Out of stock
Boyesen - RAD-02G - Rad Valve Reed Cage Assembly - Honda
Boyesen
$179.95Boyesen - RAD02G - Rad Valve Reed Cage Assembly - HondaFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - 675 - Power Reed Set - KTM
Boyesen
$39.95Boyesen - 675 - Power Reed Set - KTMFeaturesThey permit greater flow velocity over the entire range of operating pressuresIncreased performance from start-up to top accelerationSpecsBase...$39.95 -
Boyesen - RAD-34A - Rad Valve Reed Cage Assembly - Yamaha
Boyesen
$179.95Boyesen - RAD34A - Rad Valve Reed Cage Assembly - YamahaFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - SC12B - Ignition Cover - Black - Kawasaki KX250
Boyesen
$87.95Boyesen - SC12B - Ignition Cover - Black - Kawasaki KX250FeaturesSeals properly, guarding inside of engine from dirt and water and outlasts stock coversBoyesen Factory Covers are cast from the...$87.95 -
Boyesen - RAD42X - Rad Valve Reed Cage Assembly - KTM
Boyesen
$179.95Boyesen - RAD42X - Rad Valve Reed Cage Assembly - KTMFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - PSR-169 - Replacement Pro Series Reed Set - RAD12G - Kawasaki
Boyesen
$69.95Boyesen - PRO169 - Replacement Pro Series Reed Set - RAD12G - KawasakiFeaturesResponds quickly and accurately to changes in piston speed for smooth, dependable throttle responseOffers the quickest...$69.95 -
Out of stock
Boyesen - SC-02AB - Ignition Cover - Black - Honda CR250R
Boyesen
$87.95Boyesen - SC02AB - Ignition Cover - Black - Honda CR250RFeaturesSeals properly, guarding inside of engine from dirt and water and outlasts stock coversBoyesen Factory Covers are cast from the highest...$87.95 -
Boyesen - RAD-21A - Rad Valve Reed Cage Assembly - Suzuki
Boyesen
$179.95Boyesen - RAD21A - Rad Valve Reed Cage Assembly - SuzukiFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - RAD-33G - Rad Valve Reed Cage Assembly - Yamaha
Boyesen
$179.95Boyesen - RAD33G - Rad Valve Reed Cage Assembly - YamahaFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - RAD34C - Rad Valve Reed Cage Assembly - Yamaha
Boyesen
$179.95Boyesen - RAD34C - Rad Valve Reed Cage Assembly - YamahaFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - RAD-24 - Rad Valve Reed Cage Assembly - Suzuki
Boyesen
$179.95Boyesen - RAD24 - Rad Valve Reed Cage Assembly - SuzukiFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - RAD-11J - Rad Valve Reed Cage Assembly - Kawasaki
Boyesen
$179.95Boyesen - RAD11J - Rad Valve Reed Cage Assembly - KawasakiFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and...$179.95 -
Boyesen - RAD-02F - Rad Valve Reed Cage Assembly - Honda
Boyesen
$179.95Boyesen - RAD02F - Rad Valve Reed Cage Assembly - HondaFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - RAD24G - Rad Valve Reed Cage Assembly - Suzuki
Boyesen
$179.95Boyesen - RAD24G - Rad Valve Reed Cage Assembly - SuzukiFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - RAD21G - Rad Valve Reed Cage Assembly - Suzuki
Boyesen
$179.95Boyesen - RAD21G - Rad Valve Reed Cage Assembly - SuzukiFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - RAD24H - Rad Valve Reed Cage Assembly - Suzuki
Boyesen
$179.95Boyesen - RAD24H - Rad Valve Reed Cage Assembly - SuzukiFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - RAD02B - Rad Valve Reed Cage Assembly - Honda
Boyesen
$179.95Boyesen - RAD02B - Rad Valve Reed Cage Assembly - HondaFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - RAD-24I - Rad Valve Reed Cage Assembly - Suzuki
Boyesen
$179.95Boyesen - RAD24I - Rad Valve Reed Cage Assembly - SuzukiFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - RAD11D - Rad Valve Reed Cage Assembly - Kawasaki
Boyesen
$179.95Boyesen - RAD11D - Rad Valve Reed Cage Assembly - KawasakiFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and...$179.95 -
Boyesen - RAD-33 - Rad Valve Reed Cage Assembly - Yamaha
Boyesen
$179.95Boyesen - RAD33 - Rad Valve Reed Cage Assembly - YamahaFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - RAD45 - Rad Valve Reed Cage Assembly - KTM
Boyesen
$179.95Boyesen - RAD45 - Rad Valve Reed Cage Assembly - KTMFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle response and more...$179.95 -
Boyesen - SC33B - Ignition Cover - Black - Yamaha YZ125
Boyesen
$87.95Boyesen - SC33B - Ignition Cover - Black - Yamaha YZ125FeaturesSeals properly, guarding inside of engine from dirt and water and outlasts stock coversBoyesen Factory Covers are cast from the highest...$87.95 -
Boyesen - PSR-91 - Replacement Pro Series Reed Set - RAD02B - Honda
Boyesen
$64.95Boyesen - PRO91 - Replacement Pro Series Reed Set - RAD02B - HondaFeaturesResponds quickly and accurately to changes in piston speed for smooth, dependable throttle responseOffers the quickest...$64.95 -
Boyesen - PSR96 - Replacement Pro Series Reed Set - RAD11D - Kawasaki
Boyesen
$64.95Boyesen - PRO96 - Replacement Pro Series Reed Set - RAD11D - KawasakiFeaturesResponds quickly and accurately to changes in piston speed for smooth, dependable throttle responseOffers the quickest...$64.95 -
Boyesen - SC-11AB - Ignition Cover - Black - Kawasaki KX125
Boyesen
$87.95Boyesen - SC11AB - Ignition Cover - Black - Kawasaki KX125FeaturesSeals properly, guarding inside of engine from dirt and water and outlasts stock coversBoyesen Factory Covers are cast from the...$87.95 -
Boyesen - PSR23 - Replacement Pro Series Reed Set - RAD42X - KTM
Boyesen
$64.95Boyesen - PRO23 - Replacement Pro Series Reed Set - RAD42X - KTMFeaturesResponds quickly and accurately to changes in piston speed for smooth, dependable throttle responseOffers the quickest...$64.95 -
Boyesen - PSR140 - Replacement Pro Series Reed Set - RAD33E - Yamaha
Boyesen
$64.95Boyesen - PRO140 - Replacement Pro Series Reed Set - RAD33E - YamahaFeaturesResponds quickly and accurately to changes in piston speed for smooth, dependable throttle responseOffers the quickest...$64.95 -
Boyesen - PSR-54 - Replacement Pro Series Reed Set - RAD14XA - Kawasaki
Boyesen
$64.95Boyesen - PRO54 - Replacement Pro Series Reed Set - RAD14XA - KawasakiFeaturesResponds quickly and accurately to changes in piston speed for smooth, dependable throttle responseOffers the quickest...$64.95 -
Boyesen - PRO64 - Pro Series Reed Set - Yamaha
Boyesen
$62.95Boyesen - PRO64 - Pro Series Reed Set - YamahaFeaturesHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffers the quickest acceleration any reed can offer;...$62.95 -
Boyesen - PRO-191 - Pro Series Reed Set - Kawasaki
Boyesen
$62.95Boyesen - PRO191 - Pro Series Reed Set - KawasakiFeaturesHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffers the quickest acceleration any reed can...$62.95 -
Out of stock
Boyesen - PSR21 - Replacement Pro Series Reed Set - RAD34C - Yamaha
Boyesen
$64.95Boyesen - PRO21 - Replacement Pro Series Reed Set - RAD34C - YamahaFeaturesResponds quickly and accurately to changes in piston speed for smooth, dependable throttle responseOffers the quickest...$64.95
Boyesen Intake Systems, Reed Sets & Engine Components – Performance, Throttle Response & Durability
Boyesen is a longtime leader in performance intake and reed technology, designing components that enhance airflow, combustion efficiency and throttle response for motocross, trail and ATV applications. Their engineered solutions support both two-stroke and four-stroke platforms and are built to deliver measurable improvements in power, consistency and overall ride quality. Every Boyesen product is developed with precision fitment in mind, ensuring dependable, model-specific compatibility.
Core products such as the Rad Valve Reed Cage Assembly, Power Reeds and Super Stock reed sets are designed to improve low-end torque, smooth mid-range pull and sharpen throttle control. Boyesen offers tailored reed solutions for major manufacturers including Honda, Yamaha, Suzuki, Kawasaki, KTM, Polaris and Can-Am, helping optimize port timing and combustion efficiency. The brand also produces durable clutch covers, water pump/impeller covers and throttle-enhancing accessories built to withstand high-RPM stress and demanding off-road conditions.
Trusted by riders, tuners and racers worldwide, Boyesen combines proven engineering with durable materials to deliver consistent performance gains and long-term reliability. Whether upgrading a stock intake or building a performance-focused machine, Boyesen components offer smoother power delivery, reduced hesitation and improved engine control. Their commitment to airflow optimization and durability makes Boyesen a top choice for anyone seeking dependable, race-ready power upgrades.