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 - SSC301 - Super Stock Reed Set - Carbon - Honda
Boyesen
$50.95Boyesen - 10080103 - Super Stock Reed Set - Carbon - HondaFeaturesEnhance performance at all rpmMatched to OEM specificationsSpecsRiding StyleOff-RoadUnitsSetColor/FinishBlackProduct NameReed...$50.95 -
Out of stock
Boyesen - PW-08 - Power Wing Fuel Atomizer - Honda/Kawasaki/Suzuki/Yamaha - Fits 2002-2004 Yamaha YZ125, 2003-2007 Honda CR125R, 2004-2007 Honda CR250R, 2003-2006 Kawasaki KX125, 2001-2008 Suzuki RM125
Boyesen
$129.95Boyesen - 10500137 - Power Wing Fuel Atomizer - Honda/Kawasaki/Suzuki/YamahaFeaturesAerodynamic design maximizes velocity generation and power gainPrecision fit ensures perfect alignment and easy...$129.95 -
Out of stock
Boyesen - PW-43 - Power Wing Fuel Atomizer - Honda/Kawasaki/KTM/Suzuki - Multiple Models
Boyesen
$99.95Boyesen - 10500217 - Power Wing Fuel Atomizer - Honda/Kawasaki/KTM/SuzukiFeaturesAerodynamic design maximizes velocity generation and power gainPrecision fit ensures perfect alignment and easy...$99.95 -
Out of stock
Boyesen - RAD-42D - Rad Valve Reed Cage Assembly - Husqvarna/KTM - Fits 2004-2016 KTM 250 SX, 2007-2016 KTM 300 EXC/XC, 2014-2016 Husqvarna TE 300
Boyesen
$179.95Boyesen - 10080032 - 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 -
Boyesen - PRO-204 - Pro Series Reed Set - Kawasaki
Boyesen
$62.95Boyesen - 10080048 - 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 - PRO-212 - Pro Series Reed Set - Kawasaki/Suzuki
Boyesen
$57.95Boyesen - 10080047 - Pro Series Reed Set - Kawasaki/SuzukiFeaturesHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffers the quickest acceleration any reed...$57.95 -
Out of stock
Boyesen - RAD-10E - Rad Valve Reed Cage Assembly - Kawasaki/Suzuki - Fits 1988-1991 Honda CR125R, 1992-1997 Honda CR125R, 2003-2005 Suzuki RM100
Boyesen
$169.95Boyesen - 10080029 - Rad Valve Reed Cage Assembly - Kawasaki/SuzukiFeaturesMade of one-piece aluminum castings and bolts in easily; no modifications necessaryProvide quicker, sharper throttle...$169.95 -
Out of stock
Boyesen - PW-37 - Power Wing Fuel Atomizer - Kawasaki/Suzuki/Yamaha - Fits 2000-2024 Yamaha YZ250, 2000-2008 Kawasaki KX250, 2001-2008 Suzuki RM250, 2016-2024 Yamaha YZ250X
Boyesen
$129.95Boyesen - 10500193 - Power Wing Fuel Atomizer - Kawasaki/Suzuki/YamahaFeaturesAerodynamic design maximizes velocity generation and power gainPrecision fit ensures perfect alignment and easy...$129.95 -
Boyesen - PSR-209 - Replacement Pro Series Reed Set - RAD21J - Suzuki
Boyesen
$69.95Boyesen - 10080021 - Replacement Pro Series Reed Set - RAD21J - SuzukiFeaturesResponds quickly and accurately to changes in piston speed for smooth, dependable throttle responseOffers the quickest...$69.95 -
Out of stock
Boyesen - PSR-201 - Replacement Pro Series Reed Set - RAD02H - Honda
Boyesen
$69.95Boyesen - 10080012 - Replacement Pro Series Reed Set - RAD02H - HondaFeaturesResponds quickly and accurately to changes in piston speed for smooth, dependable throttle responseOffers the quickest...$69.95 -
Boyesen - PW-06 - Power Wing Fuel Atomizer - Yamaha
Boyesen
$129.95Boyesen - 10500136 - Power Wing Fuel Atomizer - YamahaFeaturesAerodynamic design maximizes velocity generation and power gainPrecision fit ensures perfect alignment and easy installationIncreases...$129.95 -
Boyesen - PW-38 - Power Wing Fuel Atomizer - Fits 2003-2009 Yamaha YZ250F
Boyesen
$129.95Boyesen - 10500198 - Power Wing Fuel Atomizer - YamahaFeaturesAerodynamic design maximizes velocity generation and power gainPrecision fit ensures perfect alignment and easy installationIncreases...$129.95 -
Out of stock
Boyesen - PW-30 - Power Wing Fuel Atomizer - Fits 2007-2008 Honda CRF450R
Boyesen
$129.95Boyesen - 10500189 - Power Wing Fuel Atomizer - HondaFeaturesAerodynamic design maximizes velocity generation and power gainPrecision fit ensures perfect alignment and easy installationIncreases...$129.95 -
Boyesen - WPI-06 - Impeller Pump - Honda CRF450R - Fits 2002-2007 Honda CRF450R
Boyesen
$79.95Boyesen - 09500026 - Impeller Pump - Honda CRF450RFeaturesLess horsepower loss during the late stages of a raceExtend engine lifeImpellers are designed to minimize cavitationSpecsTypeWater...$79.95 -
Out of stock
Boyesen - WPK-20B - Impeller/Waterpump Cover - Black - Fits Suzuki 1989-2018 RM80/85, 2019-2023 RM85
Boyesen
$219.95Boyesen - 09400733 - Impeller/Waterpump Cover - Black - SuzukiFeaturesThis high-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow at all rpm...$219.95 -
Boyesen - CC-42B - Clutch Cover - Black - Fits KTM 2004-2012 250 EXC, 2003-2016 250 SX, 2004-2016 250/300 XC, 2004-2012 300 XC-W
Boyesen
$95.95Boyesen - 09400705 - Clutch Cover - Black - KTMFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect, leak-free...$95.95 -
Boyesen - CC-42M - Clutch Cover - Magnesium - Fits KTM 2004-2012 250 EXC, 2003-2016 250 SX, 2004-2016 250/300 XC, 2004-2012 300 XC-W
Boyesen
$95.95Boyesen - 09400706 - Clutch Cover - Magnesium - KTMFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Out of stock
Boyesen - WPK-17M - Impeller/Waterpump Cover - Magnesium - Kawasaki/Suzuki - Fits 2004-2016 Kawasaki KX250F, 2004-2006 Suzuki RM-Z250
Boyesen
$229.95Boyesen - 09400247 - Impeller/Waterpump Cover - Magnesium - Kawasaki/SuzukiFeaturesThis high-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow...$229.95 -
Boyesen - CC-46B - Clutch Cover - Black - Husqvarna/KTM - Fits 2014-2017 Husqvarna TC 85, 2006-2017 KTM 85 SX, 2006-2012 KTM 105 SX
Boyesen
$95.95Boyesen - 09400693 - Clutch Cover - Black - Husqvarna/KTMFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - WPK-09B - Impeller/Waterpump Cover - Black - Fits 2007-2025 Honda CRF150R
Boyesen
$194.95Boyesen - 09400679 - 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 -
Out of stock
Boyesen - CC-38B - Clutch Cover - Black - Fits Yamaha 2003-2015 WR450F, 2003-2009 YZ450F
Boyesen
$95.95Boyesen - 09400238 - Clutch Cover - Black - YamahaFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - WPK37B - Impeller/Waterpump Cover - Black - Yamaha
Boyesen
$194.95Boyesen - 09400403 - Impeller/Waterpump Cover - Black - YamahaFeaturesThis high-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow at all rpm...$194.95 -
Boyesen - WPK-07B - Impeller/Waterpump Cover - Black - Fits Honda 2004-2009 CRF250R, 2004-2017 CRF250X
Boyesen
$194.95Boyesen - 09400406 - 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 -
Out of stock
Boyesen - CC-33B - Clutch Cover - Black - Fits Yamaha 2005-2025 YZ125, 2020-2025 YZ125X
Boyesen
$95.95Boyesen - 09400395 - Clutch Cover - Black - YamahaFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Out of stock
Boyesen - CC-07XM - Clutch Cover - Magnesium - Fits 2004-2017 Honda CRF250X
Boyesen
$95.95Boyesen - 09400565 - Clutch Cover - Magnesium - HondaFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Out of stock
Boyesen - CC-17B - Clutch Cover - Black - Kawasaki/Suzuki - Fits 2004-2008 Kawasaki KX250F, 2004-2006 Suzuki RM-Z250
Boyesen
$95.95Boyesen - 09400445 - Clutch Cover - Black - Kawasaki/SuzukiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a...$95.95 -
Out of stock
Boyesen - WPK37M - Impeller/Waterpump Cover - Magnesium - Yamaha
Boyesen
$194.95Boyesen - 09400404 - Impeller/Waterpump Cover - Magnesium - YamahaFeaturesThis high-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow at all...$194.95 -
Out of stock
Boyesen - CC-31M - Clutch Cover - Magnesium - Fits 1994-2004 Yamaha YZ125
Boyesen
$198.95Boyesen - 09400393 - Clutch Cover - Magnesium - YamahaFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$198.95 -
Boyesen - CC-31B - Clutch Cover - Black - Fits 1994-2004 Yamaha YZ125
Boyesen
$198.95Boyesen - 09400392 - Clutch Cover - Black - YamahaFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$198.95 -
Out of stock
Boyesen - CC-12CM - Clutch Cover - Magnesium - Fits 2005-2007 Kawasaki KX250
Boyesen
$95.95Boyesen - 09400390 - Clutch Cover - Magnesium - KawasakiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - WPK-31B - Impeller/Waterpump Cover - Black - Fits 1998-2004 Yamaha YZ125
Boyesen
$194.95Boyesen - 09400399 - Impeller/Waterpump Cover - Black - YamahaFeaturesThis high-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow at all rpm...$194.95 -
Boyesen - SC-05B - Ignition Cover - Black - Fits Honda 2004-2025 CRF50, 2000-2003 XR50, 2004-2020 CRF70, 1997-2003 XR70
Boyesen
$109.95Boyesen - 09400377 - Ignition Cover - Black - Honda Features Seals properly, guarding inside of engine from dirt and water and outlasts stock covers Boyesen Factory Covers are cast from the...$109.95 -
Out of stock
Boyesen - SC-33AM - Ignition Cover - Magnesium - Yamaha YZ 125/YZ 125 X
Boyesen
$87.95Boyesen - 09400384 - Ignition Cover - Magnesium - Yamaha YZ 125/YZ 125 XFeaturesSeals properly, guarding inside of engine from dirt and water and outlasts stock coversBoyesen Factory Covers are cast...$87.95 -
Out of stock
Boyesen - CC-38CM - Clutch Cover - Magnesium - Fits Yamaha 2016-2018 WR450F, 2010-2022 YZ450F, 2016-2023 YZ450FX
Boyesen
$95.95Boyesen - 09400972 - Clutch Cover - Magnesium - YamahaFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Out of stock
Boyesen - WPK-10M - Impeller/Waterpump Cover - Magnesium - Kawasaki/Suzuki - Fits 2001-2025 Kawasaki KX85, 2001-2021 Kawasaki KX100, 2022-2025 Kawasaki KX112, 2003-2005 Suzuki RM100
Boyesen
$194.95Boyesen - 09400470 - Impeller/Waterpump Cover - Magnesium - Kawasaki/SuzukiFeaturesThis high-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow...$194.95 -
Out of stock
Boyesen - SC02AM - Ignition Cover - Magnesium - Honda CR250R
Boyesen
$87.95Boyesen - 09400211 - Ignition Cover - Magnesium - Honda CR250RFeaturesSeals properly, guarding inside of engine from dirt and water and outlasts stock coversBoyesen Factory Covers are cast from the...$87.95 -
Out of stock
Boyesen - WPC-12DB - Water Pump Cover - Black - KX250 - Fits 2005-2006 Kawasaki KX250
Boyesen
$129.95Boyesen - 09400472 - Water Pump Cover - Black - KX250FeaturesSpecsBase FinishPowder-CoatedColor/FinishPowder-CoatedModelSupercoolerProduct NameCoverBase ColorBlackRiding StyleOff-RoadTypeWater...$129.95 -
Boyesen - WPK-20M - Impeller/Waterpump Cover - Magnesium - Fits Suzuki 1989-2018 RM80/85, 2019-2023 RM85
Boyesen
$219.95Boyesen - 09400734 - 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...$219.95 -
Out of stock
Boyesen - WPK06AM - Impeller/Waterpump Cover - Magnesium - Fits 2009-2016 Honda CRF450R
Boyesen
$194.95Boyesen - 09400897 - 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 -
Out of stock
Boyesen - WPK-09M - Impeller/Waterpump Cover - Magnesium - Fits 2007-2025 Honda CRF150R
Boyesen
$206.65Boyesen - 09400680 - 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...$206.65
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.