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.
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Boyesen - WPK-07M - Impeller/Waterpump Cover - Magnesium - Honda
Boyesen
$194.95Boyesen - 09400263 - Impeller/Waterpump Cover - Magnesium - HondaFeaturesThis high-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow at all rpm...$194.95 -
Boyesen - WPC-12DM - Water Pump Cover - Magnesium - KX250
Boyesen
$129.95Boyesen - 09400473 - Water Pump Cover - Magnesium - KX250FeaturesSpecsBase FinishPowder-CoatedColor/FinishMagnesiumColor/FinishPowder-CoatedProduct NameCoverUnitsEachMaterialAluminumRiding...$129.95 -
Boyesen - CC-46M - Clutch Cover - Magnesium - Husqvarna/KTM
Boyesen
$95.95Boyesen - 09400694 - Clutch Cover - Magnesium - Husqvarna/KTMFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a...$95.95 -
Boyesen - CC-07AM - Clutch Cover - Magnesium - Honda
Boyesen
$117.95Boyesen - 09400969 - Clutch Cover - Magnesium - HondaFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$117.95 -
Boyesen - CC-44B - Clutch Cover - Black - Husaberg/KTM
Boyesen
$95.95Boyesen - 09400570 - Clutch Cover - Black - Husaberg/KTMFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - WPK-26AM - Impeller/Waterpump Cover - Magnesium - Suzuki
Boyesen
$229.95Boyesen - 09400862 - Impeller/Waterpump Cover - Magnesium - SuzukiFeaturesThis high-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow at all...$229.95 -
Boyesen - CC-27AM - Clutch Cover - Magnesium - Suzuki
Boyesen
$95.95Boyesen - 09400683 - Clutch Cover - Magnesium - SuzukiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - CC-06XM - Clutch Cover - Magnesium - Honda
Boyesen
$95.95Boyesen - 09400615 - Clutch Cover - Magnesium - HondaFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - WPK-06B - Impeller/Waterpump Cover - Black - Honda
Boyesen
$194.95Boyesen - 09400397 - Impeller/Waterpump Cover - Black - HondaFeaturesThis high-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow at all rpm...$194.95 -
Boyesen - CC-12CB - Clutch Cover - Black - Kawasaki
Boyesen
$95.95Boyesen - 09400389 - Clutch Cover - Black - KawasakiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - WPK-10B - Impeller/Waterpump Cover - Black - Kawasaki/Suzuki
Boyesen
$194.95Boyesen - 09400469 - Impeller/Waterpump Cover - Black - Kawasaki/SuzukiFeaturesThis high-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow at...$194.95 -
Boyesen - CC-32AM - Clutch Cover - Magnesium - Yamaha
Boyesen
$95.95Boyesen - 09400236 - Clutch Cover - Magnesium - YamahaFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - SC-12AM - Ignition Cover - Magnesium - Kawasaki KX250
Boyesen
$87.95Boyesen - 09400381 - Ignition Cover - Magnesium - Kawasaki KX250FeaturesSeals properly, guarding inside of engine from dirt and water and outlasts stock coversBoyesen Factory Covers are cast from the...$87.95 -
Boyesen - SC-33AB - Ignition Cover - Black - Yamaha
Boyesen
$87.95Boyesen - 09400383 - Ignition Cover - Black - YamahaFeaturesSeals properly, guarding inside of engine from dirt and water and outlasts stock coversBoyesen Factory Covers are cast from the highest...$87.95 -
Boyesen - CC-11AM - Clutch Cover - Magnesium - Kawasaki
Boyesen
$95.95Boyesen - 09400228 - Clutch Cover - Magnesium - KawasakiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - CC-37B - Clutch Cover - Black - Yamaha
Boyesen
$95.95Boyesen - 09400234 - Clutch Cover - Black - YamahaFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - CC-21AM - Clutch Cover - Magnesium - Suzuki
Boyesen
$95.95Boyesen - 09400231 - Clutch Cover - Magnesium - SuzukiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - CC-37M - Clutch Cover - Magnesium - Yamaha
Boyesen
$95.95Boyesen - 09400235 - Clutch Cover - Magnesium - YamahaFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - CC-12M - Clutch Cover - Magnesium - Kawasaki
Boyesen
$95.95Boyesen - 09400229 - Clutch Cover - Magnesium - KawasakiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - SC-01AM - Ignition Cover - Magnesium - Honda CR125R
Boyesen
$87.95Boyesen - 09400209 - Ignition Cover - Magnesium - Honda CR125RFeaturesSeals properly, guarding inside of engine from dirt and water and outlasts stock coversBoyesen Factory Covers are cast from the...$87.95 -
Boyesen - PRO-206 - Pro Series Reed Set - Kawasaki
Boyesen
$62.95Boyesen - 10080049 - 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 -
Boyesen - PRO-216 - Pro Series Reed Set - Kawasaki
Boyesen
$62.95Boyesen - 10080100 - 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 -
Boyesen - PRO-200 - Pro Series Reed Set - Honda
Boyesen
$69.95Boyesen - 10080046 - 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...$69.95 -
Boyesen - PRO-217 - Pro Series Reed Set - Yamaha
Boyesen
$62.95Boyesen - 10080101 - 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...$62.95 -
Boyesen - 6129 - Power Reed Petal Set - Kawasaki
Boyesen
$39.95Boyesen - 10080095 - Power Reed Petal Set - KawasakiFeaturesThe top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMsThe stiffer, bottom reed is ported to...$39.95 -
Boyesen - PRO-215 - Pro Series Reed Set - Honda
Boyesen
$62.95Boyesen - 10080099 - 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...$62.95 -
Boyesen - PRO-208 - Pro Series Reed Set - Suzuki
Boyesen
$62.95Boyesen - 10080050 - Pro Series Reed Set - SuzukiFeaturesHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffers the quickest acceleration any reed can...$62.95 -
Boyesen - 6107 - Power Reed Petal Set - Polini
Boyesen
$28.95Boyesen - 10080091 - Power Reed Petal Set - PoliniFeaturesThe top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMsThe stiffer, bottom reed is ported to...$28.95 -
Boyesen - 6119 - Power Reed Petal Set - Yamaha
Boyesen
$39.95Boyesen - 10080043 - Power Reed Petal Set - YamahaFeaturesThe top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMsThe stiffer, bottom reed is ported to...$39.95 -
Boyesen - CC22B - Clutch Cover - Black - Suzuki
Boyesen
$95.95Boyesen - CC22B - Clutch Cover - Black - SuzukiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect, leak-free...$95.95 -
Boyesen - PSR-89 - Pro Series Reed Set - Suzuki
Boyesen
$64.95Boyesen - PRO89 - Pro Series Reed Set - SuzukiFeaturesHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffers the quickest acceleration any reed can offer;...$64.95 -
Boyesen - CC-22M - Clutch Cover - Magnesium - Suzuki
Boyesen
$95.95Boyesen - 09400232 - Clutch Cover - Magnesium - SuzukiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - WPK-44B - Impeller/Waterpump Cover - Black - Husaberg/Husqvarna/KTM
Boyesen
$194.95Boyesen - 09401234 - Impeller/Waterpump Cover - Black - Husaberg/Husqvarna/KTMFeaturesThis high-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the...$194.95 -
Boyesen - CC-44AO - Clutch Cover - Orange - KTM
Boyesen
$105.95Boyesen - 09401233 - Clutch Cover - Orange - KTMFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect, leak-free...$105.95 -
Boyesen - WPK-44O - Impeller/Waterpump Cover - Orange - KTM
Boyesen
$199.95Boyesen - 09401236 - Impeller/Waterpump Cover - Orange - KTMFeaturesThis high-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow at all rpm...$199.95 -
Boyesen - WPK-44M - Impeller/Waterpump Cover - Magnesium - Husaberg/Husqvarna/KTM
Boyesen
$194.95Boyesen - 09401235 - Impeller/Waterpump Cover - Magnesium - Husaberg/Husqvarna/KTMFeaturesThis high-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing...$194.95 -
Boyesen - CC-44AB - Clutch Cover - Black - Husaberg/Husqvarna/KTM
Boyesen
$95.95Boyesen - 09401231 - Clutch Cover - Black - Husaberg/Husqvarna/KTMFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a...$95.95 -
Boyesen - SC-41AB - Ignition Cover - Black - Husaberg/Husqvarna/KTM
Boyesen
$87.95Boyesen - 09401266 - Ignition Cover - Black - Husaberg/Husqvarna/KTMFeaturesSeals properly, guarding inside of engine from dirt and water and outlasts stock coversBoyesen Factory Covers are cast from...$87.95 -
Boyesen - CC-45B - Clutch Cover - Black - Husaberg/Husqvarna/KTM
Boyesen
$95.95Boyesen - 09401263 - Clutch Cover - Black - Husaberg/Husqvarna/KTMFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a...$95.95 -
Boyesen - CC-45M - Clutch Cover - Magnesium - Husaberg/Husqvarna/KTM
Boyesen
$95.95Boyesen - 09401264 - Clutch Cover - Magnesium - Husaberg/Husqvarna/KTMFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced...$95.95
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.