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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Out of stock
Boyesen - SSF301 - Super Stock Reed Set - Fiber - Fits 2005-2007 Honda CR125R
Boyesen
$34.95Boyesen - 10080107 - Super Stock Reed Set - Fiber - HondaFeaturesEnhance performance at all rpmMatched to OEM specificationsSpecsColor/FinishYellowProduct NameReed PetalBase...$34.95 -
Out of stock
Boyesen - 6123 - Power Reed Petal Set - Suzuki
Boyesen
$39.95Boyesen - 10080042 - Power Reed Petal Set - SuzukiFeaturesThe 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-198 - Pro Series Reed Set - Honda
Boyesen
$62.95Boyesen - 10080045 - 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 - SC-30M - Ignition Cover - Magnesium - Yamaha
Boyesen
$87.95Boyesen - 09401108 - Ignition Cover - Magnesium - YamahaFeaturesSeals properly, guarding inside of engine from dirt and water and outlasts stock coversBoyesen Factory Covers are cast from the highest...$87.95 -
Out of stock
Boyesen - CC-10B - Clutch Cover - Black - Kawasaki/Suzuki - Fits 1998-2025 Kawasaki KX85, 1998-2021 Kawasaki KX100, 2022-2025 Kawasaki KX112, 2003-2005 Suzuki RM100
Boyesen
$179.95Boyesen - 09401113 - Clutch Cover - Black - Kawasaki/SuzukiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a...$179.95 -
Out of stock
Boyesen - CC-10M - Clutch Cover - Magnesium - Kawasaki/Suzuki - Fits 1998-2025 Kawasaki KX85, 1998-2021 Kawasaki KX100, 2022-2025 Kawasaki KX112, 2003-2005 Suzuki RM100
Boyesen
$179.95Boyesen - 09401114 - Clutch Cover - Magnesium - Kawasaki/SuzukiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a...$179.95 -
Out of stock
Boyesen - SC-30B - Ignition Cover - Black - Fits Yamaha 2018-2025 YZ65, 1993-2001 YZ80, 2002-2025 YZ85
Boyesen
$87.95Boyesen - 09401107 - 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 -
Out of stock
Boyesen - CC-06AB - Clutch Cover - Black - Fits 2009-2016 Honda CRF450R
Boyesen
$95.95Boyesen - 09401110 - Clutch Cover - Black - HondaFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Out of stock
Boyesen - SC10AB - Ignition Cover - Black - Kawasaki/Suzuki - Fits 1990-2000 Kawasaki KX80, 2001-2025 Kawasaki KX85, 1995-2021 Kawasaki KX100, 2022-2025 Kawasaki KX112, 2003-2006 Suzuki RM100
Boyesen
$87.95Boyesen - 09401105 - Ignition Cover - Black - Kawasaki/SuzukiFeaturesSeals properly, guarding inside of engine from dirt and water and outlasts stock coversBoyesen Factory Covers are cast from the...$87.95 -
Boyesen - CC-17AB - Clutch Cover - Black - Fits 2009-2020 Kawasaki KX250F
Boyesen
$95.95Boyesen - 09401116 - Clutch Cover - Black - KawasakiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - CC-18M - Clutch Cover - Magnesium - Fits 2006-2015 Kawasaki KX450F
Boyesen
$95.95Boyesen - 09401120 - Clutch Cover - Magnesium - KawasakiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - CC-18B - Clutch Cover - Black - Fits 2006-2015 Kawasaki KX450F
Boyesen
$95.95Boyesen - 09401119 - Clutch Cover - Black - KawasakiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Out of stock
Boyesen - HST-002 - Hot Start Trigger - Brembo
Boyesen
$29.95Boyesen - 06120300 - Hot Start Trigger - BremboFeaturesReconfigured and resized to reduce accidental engagements on your 4-stroke vehicleReplaces plastic lever with cast aluminum, along with a new...$29.95 -
Boyesen - SC-10DM - Ignition Cover - Magnesium - Kawasaki KX 65
Boyesen
$87.95Boyesen - 09401104 - Ignition Cover - Magnesium - Kawasaki KX 65FeaturesSeals properly, guarding inside of engine from dirt and water and outlasts stock coversBoyesen Factory Covers are cast from the...$87.95 -
Boyesen - CC-30B - Clutch Cover - Black - Fits Yamaha 2018-2025 YZ65, 2002-2025 YZ85
Boyesen
$95.95Boyesen - 09401124 - 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-30M - Clutch Cover - Magnesium - Fits Yamaha 2018-2025 YZ65, 2002-2025 YZ85
Boyesen
$95.95Boyesen - 09401125 - 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 - CC-17AM - Clutch Cover - Magnesium - Fits 2009-2020 Kawasaki KX250F
Boyesen
$95.95Boyesen - 09401117 - Clutch Cover - Magnesium - KawasakiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Out of stock
Boyesen - SC-10DB - Ignition Cover - Black - Kawasaki KX 65 - Fits 2006-2025 Kawasaki KX65
Boyesen
$87.95Boyesen - 09401103 - Ignition Cover - Black - Kawasaki KX 65FeaturesSeals 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 - CC-26AM - Clutch Cover - Magnesium - Fits Suzuki 2017-2019 RMX450Z, 2008-2024 RM-Z450
Boyesen
$95.95Boyesen - 09401123 - Clutch Cover - Magnesium - SuzukiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Out of stock
Boyesen - APC-3K - Quickshot 3 Acceleration Pump Cover - Fits 2004-2011 KTM 400 EXC/XC
Boyesen
$119.95Boyesen - 10500258 - Quickshot 3 Acceleration Pump Cover - KTMFeaturesTunable leak jet maximizes volume of fuel and duration of squirt for all conditionsInvestment cast and finished to precise...$119.95 -
Boyesen - CC-26AB - Clutch Cover - Black - Fits Suzuki 2017-2019 RMX450Z, 2008-2024 RM-Z450
Boyesen
$95.95Boyesen - 09401122 - Clutch Cover - Black - SuzukiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Out of stock
Boyesen - WPE-18M - HY-FLO Water Pump Elbow
Boyesen
$29.95Boyesen - 09401101 - HY-FLO Water Pump ElbowFeaturesUsed by Team Monster Kawasaki, MX and ATV race teamsSpecsBase ColorBlackColor/FinishMagnesiumModelHy-FloUnitsEachRiding StyleOff-RoadProduct...$29.95 -
Boyesen - WPE-18B - HY-FLO Water Pump Elbow
Boyesen
$29.95Boyesen - 09401100 - HY-FLO Water Pump ElbowFeaturesUsed by Team Monster Kawasaki, MX and ATV race teamsSpecsModelHy-FloProduct NameElbowTypeWater PumpBase ColorBlackColor/FinishBlackRiding...$29.95 -
Boyesen - SC10AM - Ignition Cover - Magnesium - Kawasaki/Suzuki
Boyesen
$87.95Boyesen - 09401106 - Ignition Cover - Magnesium - Kawasaki/SuzukiFeaturesSeals properly, guarding inside of engine from dirt and water and outlasts stock coversBoyesen Factory Covers are cast from...$87.95 -
Out of stock
Boyesen - WPK-44AB - Impeller/Waterpump Cover - Black - Gas Gas/Husqvarna/KTM - Fits 2021-2023 Gas Gas EX/MC 250F, 2016-2022 Husqvarna FC 250, 2021-2023 Gas Gas EX 350F, 2017-2019 KTM 250/350 EXC-F, 2016-2022 KTM 250/350 SX-F/XC-F
Boyesen
$194.95Boyesen - 09320154 - Impeller/Waterpump Cover - Black - Gas Gas/Husqvarna/KTMFeaturesThis high-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the...$194.95 -
Out of stock
Boyesen - RAD42E - Rad Valve Reed Cage Assembly - Husqvarna/KTM - Fits 2017-2018 KTM 300 EXC/XC/XC-W, 2017-2018 Husqvarna TE/TX 300, 2019 Husqvarna TC 250/TX 300
Boyesen
$179.95Boyesen - 10080311 - 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 - CC-17CB - Clutch Cover - Black - Fits 2021-2025 Kawasaki KX250
Boyesen
$95.95Boyesen - 09402184 - Clutch Cover - Black - KawasakiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Boyesen - WPK-38DB - Water Pump Kit - Black - Yamaha
Boyesen
$259.95Boyesen - 09402225 - Water Pump Kit - Black - YamahaFeaturesHigh-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow at all rpm ranges, the...$259.95 -
Boyesen - WPK-38DL - Water Pump Kit - Blue - Yamaha
Boyesen
$264.95Boyesen - 09402227 - Water Pump Kit - Blue - YamahaFeaturesHigh-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow at all rpm ranges, the engine...$264.95 -
Out of stock
Boyesen - CC-41CO - Clutch Cover - Orange - KTM/Husqvarna - Fits KTM 2023-2025 125 SX, 2023-2025 125 XC, 2025 150 SX, 2024-2025 150 XC-W
Boyesen
$105.95Boyesen - 09402232 - Clutch Cover - Orange - KTM/HusqvarnaFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$105.95 -
Boyesen - CC-41CL - Clutch Cover - Blue - KTM/Husqvarna - Fits KTM 2023-2025 125 SX, 2023-2025 125 XC, 2025 150 SX, 2024-2025 150 XC-W
Boyesen
$105.95Boyesen - 09402233 - Clutch Cover - Blue - KTM/HusqvarnaFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$105.95 -
Boyesen - CC-41CM - Clutch Cover - Magnesium - KTM/Husqvarna - Fits KTM 2023-2025 125 SX, 2023-2025 125 XC, 2025 150 SX, 2024-2025 150 XC-W
Boyesen
$95.95Boyesen - 09402231 - Clutch Cover - Magnesium - KTM/HusqvarnaFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a...$95.95 -
Out of stock
Boyesen - CC-17CM - Clutch Cover - Magnesium - Fits 2021-2025 Kawasaki KX250
Boyesen
$95.95Boyesen - 09402230 - Clutch Cover - Magnesium - KawasakiFeaturesLightweight factory clutch covers provide years of outstanding protection; guaranteed not to warpIndividually surfaced for a perfect,...$95.95 -
Out of stock
Boyesen - WPK-42L - Water Pump Kit - Blue - Gas Gas/Husqvarna/KTM - Multiple Gas Gas/Husqvarna/KTM Models
Boyesen
$199.95Boyesen - 09320311 - Water Pump Kit - Blue - Gas Gas/Husqvarna/KTMFeaturesHigh-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow at all rpm...$199.95 -
Boyesen - WPK-42O - Water Pump Kit - Orange - Gas Gas/Husqvarna/KTM - Multiple Gas Gas/Husqvarna/KTM Models
Boyesen
$199.95Boyesen - 09320310 - Water Pump Kit - Orange - Gas Gas/Husqvarna/KTMFeaturesHigh-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow at all rpm...$199.95 -
Boyesen - WPK-42M - Water Pump Kit - Magnesium - Gas Gas/Husqvarna/KTM - Multiple Gas Gas/Husqvarna/KTM Models
Boyesen
$194.95Boyesen - 09320309 - Water Pump Kit - Magnesium - Gas Gas/Husqvarna/KTMFeaturesHigh-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow at all...$194.95 -
Boyesen - WPK-42B - Water Pump Kit - Black - Gas Gas/Husqvarna/KTM - Multiple Gas Gas/Husqvarna/KTM Models
Boyesen
$194.95Boyesen - 09320308 - Water Pump Kit - Black - Gas Gas/Husqvarna/KTMFeaturesHigh-flow, hydrodynamic water pump kit has been tested and designed to flow more coolantBy increasing the flow at all rpm...$194.95 -
Boyesen - SSF102 - Super Stock Reed Set - Fiber - Honda
Boyesen
$34.95Boyesen - SSF102 - Super Stock Reed Set - Fiber - HondaFeaturesEnhance performance at all rpmMatched to OEM specificationsSpecsMaterialFiberglassBase ColorYellowModelSuper StockRiding...$34.95 -
Boyesen - SSF036 - Super Stock Reed Set - Fiber - Yamaha
Boyesen
$24.95Boyesen - SSF036 - Super Stock Reed Set - Fiber - YamahaFeaturesEnhance performance at all rpmMatched to OEM specificationsSpecsProduct NameReed PetalBase ColorYellowModelSuper...$24.95 -
Boyesen - SSF035 - Super Stock Reed Set - Fiber - Yamaha
Boyesen
$24.95Boyesen - SSF035 - Super Stock Reed Set - Fiber - YamahaFeaturesEnhance performance at all rpmMatched to OEM specificationsSpecsMaterialFiberglassUnitsSetBase ColorYellowProduct NameReed PetalRiding...$24.95
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.