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...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: $67.95Qty in Cart: 0Quantity:Price:MSRP: $67.95Now: $55.00Was: $67.95Subtotal: -
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...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...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...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...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...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...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...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,...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...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...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...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: -
On Sale
VINTCO Top End Gasket Kit - Suzuki KTE022
VINTCO
MSRP: $32.95Now: $30.64Was: $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...09347224- SKU:
- 09347224
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
MSRP: $32.95Now: $30.64Was: $32.95 -
On Sale
VINTCO Top End Gasket Kit - Honda KTE068
VINTCO
MSRP: $29.95Now: $27.85Was: $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...09347228- SKU:
- 09347228
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $29.95Now: $27.85Was: $29.95 -
On Sale
VINTCO Top End Gasket Kit - Yamaha KTE044
VINTCO
MSRP: $89.95Now: $83.65Was: $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...09347233- SKU:
- 09347233
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $89.95Now: $83.65Was: $89.95Qty in Cart: 0Quantity:Price:MSRP: $89.95Now: $83.65Was: $89.95Subtotal: -
On Sale
VINTCO Top End Gasket Kit - Honda KTE009
VINTCO
MSRP: $39.95Now: $37.15Was: $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...09347235- SKU:
- 09347235
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
MSRP: $39.95Now: $37.15Was: $39.95 -
On Sale
VINTCO Engine Gasket Kit - Suzuki KEG051
VINTCO
MSRP: $39.95Now: $37.15Was: $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...09347312- SKU:
- 09347312
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
MSRP: $39.95Now: $37.15Was: $39.95Qty in Cart: 0Quantity:Price:MSRP: $39.95Now: $37.15Was: $39.95Subtotal: -
On Sale
VINTCO Engine Gasket Kit - Suzuki KEG062
VINTCO
MSRP: $44.95Now: $41.80Was: $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...09347327- SKU:
- 09347327
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
MSRP: $44.95Now: $41.80Was: $44.95Qty in Cart: 0Quantity:Price:MSRP: $44.95Now: $41.80Was: $44.95Subtotal: -
On Sale
VINTCO Engine Gasket Kit - Suzuki KEG070
VINTCO
MSRP: $49.95Now: $46.45Was: $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...09347334- SKU:
- 09347334
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
MSRP: $49.95Now: $46.45Was: $49.95 -
On Sale
ATHENA Complete Gasket Kit - Honda P400210900323
ATHENA
MSRP: $205.95Now: $176.00Was: $205.95A 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...09347376- SKU:
- 09347376
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
MSRP: $205.95Now: $176.00Was: $205.95
