Dirt Bike Engine Gaskets and Kits
Dirt Bike Engine Gaskets & Top-End Kits for Yamaha, Honda XR650L & CRF at JJ Motorsports
Refresh your dirt bike's top end with premium engine gaskets and complete kits from JJ Motorsports, precision-manufactured for leak-free sealing, optimal compression, and reliable performance in motocross, enduro, and trail riding. Our selection includes full gasket sets, top-end rebuild kits, O-rings, and head/base gaskets designed for perfect fitment, heat resistance, and easy installation without machining. Compatible with popular models like Yamaha YZ/WR, Honda XR650L, CRF, and more, these high-quality components from trusted brands ensure smoother operation, reduced oil consumption, and extended engine life under dusty, high-RPM conditions. From Moose Racing's comprehensive off-road sets to ProX and Athena's OEM-spec top-end kits, get everything needed for a professional rebuild—head gaskets, valve seals, base gaskets, and more—to restore power and prevent blow-by on every ride.
Shop brands like Moose Racing, ProX, and Athena for race-proven quality. Explore related categories such as dirt bike piston and ring kits for full rebuilds or dirt bike engine for cylinders and valves.
Top Dirt Bike Engine Gaskets & Kits
- Moose Offroad Complete Gasket Set Yamaha 8080037MSE – Full engine gasket kit for Yamaha models; includes all necessary seals, O-rings, and gaskets for complete top-to-bottom rebuild with OEM reliability.
- ProX Top End Gasket Set Honda XR650L 35.1623 – Precision top-end kit for Honda XR650L; features head, base, and valve stem seals for leak-free compression and easy installation.
- Athena Top End Gasket Kit Honda P400210600323 – High-performance top-end rebuild kit for Honda CRF models; includes multi-layer steel head gasket, O-rings, and seals for maximum sealing under extreme conditions.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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On Sale
PROX Top End Gasket Set - Yamaha 35.2423
PROX
MSRP: $67.95Now: $55.00Was: $67.95A top-end gasket set is essential maintenance for any serious Yamaha rider—it's the barrier between combustion efficiency and catastrophic leaks. Over time, factory gaskets deteriorate from thermal cycling and pressure stress, leading to compression loss...09345710- SKU:
- 09345710
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
MSRP: $67.95Now: $55.00Was: $67.95 -
On Sale
PROX Top End Gasket Set - Suzuki 35.3341
PROX
MSRP: $72.95Now: $59.00Was: $72.95A top-end gasket set is essential for maintaining compression integrity and preventing oil leakage after high-mileage operation or performance modifications. The PROX 35.3341 delivers OEM-equivalent sealing across critical engine surfaces, ensuring...09345738- SKU:
- 09345738
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
MSRP: $72.95Now: $59.00Was: $72.95 -
On Sale
PROX Gasket Kit - Complete - KTM 34.6019
PROX
MSRP: $99.95Now: $81.00Was: $99.95A complete gasket kit is essential for any engine rebuild or top-end refresh, ensuring proper sealing across all critical engine interfaces and preventing costly oil and coolant leaks. The PROX Gasket Kit delivers OEM-equivalent quality with...09345614- SKU:
- 09345614
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
MSRP: $99.95Now: $81.00Was: $99.95Qty in Cart: 0Quantity:Price:MSRP: $99.95Now: $81.00Was: $99.95Subtotal: -
MOOSE RACING Clutch Cover Gasket 816021
MOOSE RACING
$12.71A failing clutch cover gasket compromises engine sealing and invites oil leakage that degrades performance and reliability. The MOOSE RACING 816021 delivers OEM-equivalent sealing with high-tech materials at a fraction of OEM pricing, making it the smart...M816021- SKU:
- M816021
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- CLUTCH COVER
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$12.71 -
MOOSE OFFROAD Motor Gasket Kit with Oil Seal - Honda 811261MSE
MOOSE OFFROAD
$110.53A failing gasket or oil seal will compromise engine integrity and lead to costly leaks, performance loss, and potential catastrophic failure. This MOOSE OFFROAD Motor Gasket Kit delivers OEM-specification seals and gaskets for a complete engine or...M811261- SKU:
- M811261
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$110.53 -
MOOSE OFFROAD Top End Gasket Set 8100033MSE
MOOSE OFFROAD
$52.94A top-end gasket failure doesn't just leak—it compromises combustion integrity and puts your engine rebuild at risk. This complete MOOSE OFFROAD gasket set eliminates the guesswork of sourcing individual seals and gaskets, giving you all the components...09346890- SKU:
- 09346890
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
$52.94 -
MOOSE OFFROAD Top End Gasket Set - Honda 8100029MSE
MOOSE OFFROAD
$27.22A complete top-end rebuild demands precision gaskets and seals that won't fail under heat and compression cycles. This MOOSE OFFROAD gasket set gives you everything needed for a thorough engine and transmission refresh—no hunting for scattered components...09346914- SKU:
- 09346914
- Availability:
- Ships Same Business Day
- Weight:
- 0.17 LBS
$27.22Qty in Cart: 0Quantity:Price:$27.22Subtotal: -
MOOSE OFFROAD Gasket Set with Seals - Suzuki 8110045MSE
MOOSE OFFROAD
$77.00A complete engine and transmission rebuild demands precision sealing at every junction—any compromise risks oil leakage, pressure loss, and catastrophic failure. This MOOSE OFFROAD gasket set eliminates guesswork by supplying every gasket, O-ring, and...09346975- SKU:
- 09346975
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$77.00Qty in Cart: 0Quantity:Price:$77.00Subtotal: -
MOOSE OFFROAD Ignition Cover Gasket - Suzuki 816817MSE
MOOSE OFFROAD
$13.39A failing ignition cover gasket leads to oil seepage, potential engine contamination, and premature wear on internal components. Whether you're replacing a clutch or addressing a persistent leak, this OEM-specification gasket restores a proper seal and...09346976- SKU:
- 09346976
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
$13.39 -
On Sale
PROX Top End Gasket Set - Kawasaki 35.4429
PROX
MSRP: $59.95Now: $51.00Was: $59.95A top-end rebuild demands gaskets that seal reliably under extreme combustion pressures and temperature fluctuations—anything less risks oil leaks, compression loss, and catastrophic engine failure. The PROX 35.4429 gasket set delivers...09347140- SKU:
- 09347140
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
MSRP: $59.95Now: $51.00Was: $59.95Qty in Cart: 0Quantity:Price:MSRP: $59.95Now: $51.00Was: $59.95Subtotal: -
On Sale
PROX Top End Gasket Set - Sherco 35.7334
PROX
MSRP: $54.95Now: $47.00Was: $54.95A top-end rebuild demands gasket integrity—any leak or failure compromises combustion efficiency and reliability. The PROX 35.7334 gasket set delivers precision-engineered sealing surfaces that maintain compression and prevent oil weeping, ensuring your...09347152- SKU:
- 09347152
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
MSRP: $54.95Now: $47.00Was: $54.95Qty in Cart: 0Quantity:Price:MSRP: $54.95Now: $47.00Was: $54.95Subtotal: -
On Sale
PROX Gasket Kit - Complete - Yamaha 34.2221
PROX
MSRP: $74.95Now: $64.00Was: $74.95A complete gasket kit is essential for any top-end rebuild or full engine overhaul—it ensures proper sealing across all critical engine surfaces and prevents oil leaks, compression loss, and contamination. Using OEM-quality gaskets throughout your...09345547- SKU:
- 09345547
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
MSRP: $74.95Now: $64.00Was: $74.95Qty in Cart: 0Quantity:Price:MSRP: $74.95Now: $64.00Was: $74.95Subtotal: -
VINTCO Top End Gasket Kit - Suzuki KTE022
VINTCO
$32.95Compromised top end gaskets lead to coolant leaks, oil seepage, and compression loss—all of which undermine engine reliability and performance. The VINTCO KTE022 Top End Gasket Kit provides OEM-equivalent sealing across your entire top end assembly,...09347224- SKU:
- 09347224
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$32.95 -
VINTCO Top End Gasket Kit - Honda KTE068
VINTCO
$29.95A top-end gasket failure can sideline your build and compromise cylinder head integrity. The VINTCO KTE068 gasket kit delivers OEM-equivalent sealing performance using modern materials and precision manufacturing, eliminating guesswork during your Honda...09347228- SKU:
- 09347228
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$29.95 -
VINTCO Top End Gasket Kit - Yamaha KTE044
VINTCO
$89.95A top-end rebuild demands precision gaskets that seal consistently under extreme combustion pressures—compromising here risks catastrophic leakage and performance loss. The VINTCO KTE044 delivers OEM-equivalent or superior sealing performance using...09347233- SKU:
- 09347233
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$89.95Qty in Cart: 0Quantity:Price:$89.95Subtotal: -
VINTCO Top End Gasket Kit - Honda KTE009
VINTCO
$39.95A top-end rebuild demands precision—any leak or misfire can compromise months of work and thousands in performance gains. The VINTCO KTE009 Top End Gasket Kit delivers OEM-equivalent or superior sealing performance using modern materials and...09347235- SKU:
- 09347235
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$39.95 -
VINTCO Engine Gasket Kit - Suzuki KEG051
VINTCO
$39.95Engine gasket failure compromises compression, invites oil leakage, and can lead to catastrophic internal damage if left unaddressed. The VINTCO Engine Gasket Kit for Suzuki delivers OEM-equivalent sealing performance using modern material compositions,...09347312- SKU:
- 09347312
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$39.95 -
VINTCO Engine Gasket Kit - Suzuki KEG062
VINTCO
$44.95A compromised gasket seal means oil leaks, coolant loss, and catastrophic engine failure—especially critical in high-performance builds where tolerances are razor-thin. The VINTCO KEG062 Engine Gasket Kit delivers a complete lower-engine seal solution...09347327- SKU:
- 09347327
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$44.95Qty in Cart: 0Quantity:Price:$44.95Subtotal: -
VINTCO Engine Gasket Kit - Suzuki KEG070
VINTCO
$49.95A failed gasket can compromise engine integrity and lead to costly leaks that threaten your build. The VINTCO Engine Gasket Kit gives you OEM-equivalent sealing performance across all critical lower-engine junctions without the OEM price tag. Whether...09347334- SKU:
- 09347334
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$49.95 -
On Sale
ATHENA Complete Gasket Kit - Honda P400210900323
ATHENA
MSRP: $195.95Now: $176.00Was: $195.95A complete gasket kit is essential for any engine rebuild—it ensures proper sealing across all critical surfaces and prevents compression loss, oil leakage, and coolant bypass that can compromise performance and reliability. The ATHENA P400210900323...09347376- SKU:
- 09347376
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
MSRP: $195.95Now: $176.00Was: $195.95
