COMETIC
Cometic Gaskets, Head Gaskets, and Seal Kits at JJ Motorsports
Cometic Gasket, founded in 1989 by Bob Gorman in the USA, is a leading manufacturer in the powersports and automotive industries, specializing in high-performance gaskets and sealing solutions. Starting from a small facility dedicated to powersports, Cometic has grown to provide innovative products that withstand extreme pressures and temperatures, catering to engine builders, racers, and enthusiasts worldwide.
At JJ Motorsports, we offer a wide range of Cometic products designed for reliable engine maintenance and upgrades. Harley-Davidson riders can enhance their setups with the durable Derby Seal Cover C10306F5 or the precise Head Gasket 3.937" x 0.036" for M8 models. For exhaust systems, the Muffler Gasket for M8/FXST/XL ensures a tight seal. We also carry options for other brands, such as the Top End Gasket Kit 68 mm for Honda and the comprehensive Top End Gasket Kit for Yamaha. Whether you're rebuilding an engine or preventing leaks, Cometic delivers compatible solutions for various vehicles. Explore our inventory to find the perfect fit for your needs.
Key features of Cometic products include Multi-Layer Steel (MLS) technology for superior durability, custom bore sizes and thicknesses for precise applications, high-temperature resistance to handle demanding conditions, and advanced materials that maintain compression and prevent failures. Shop now and secure your ride with Cometic's trusted quality!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
On Sale
COMETIC Head Gasket - 4.250" x 0.036" - M8 C10346-036
COMETIC
MSRP: $86.05Now: $81.00Was: $86.05If you're running forced induction, elevated compression, or nitrous on your Milwaukee 8, a standard head gasket won't cut it. The COMETIC MLX is engineered specifically for power adders, featuring a...09347529- SKU:
- 09347529
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
MSRP: $86.05Now: $81.00Was: $86.05 -
On Sale
COMETIC Head Gasket - 4.320" x 0.032" - M8 C10336-032
COMETIC
MSRP: $86.05Now: $81.00Was: $86.05If you're running a Milwaukee 8 with forced induction, high compression, or nitrous oxide, a standard head gasket won't cut it. COMETIC's MLX (Multi-Layer-Xtreme) gasket features a proprietary...09347530- SKU:
- 09347530
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
MSRP: $86.05Now: $81.00Was: $86.05 -
On Sale
COMETIC Head Gasket - 4.320" x 0.036" - M8 C10336-036
COMETIC
MSRP: $86.05Now: $81.00Was: $86.05If you're running power adders on your Milwaukee 8—whether it's forced induction, nitrous, or elevated compression—a standard head gasket won't cut it. The COMETIC MLX gasket is purpose-built to...09347531- SKU:
- 09347531
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
MSRP: $86.05Now: $81.00Was: $86.05 -
On Sale
COMETIC Head Gasket - 4.430" x 0.036" - M8 C10347-036
COMETIC
MSRP: $86.05Now: $81.00Was: $86.05If you're running a Milwaukee-8 with forced induction, high compression, or nitrous, your stock head gasket simply won't hold up under the additional cylinder pressures and heat cycling. COMETIC's...09347533- SKU:
- 09347533
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
MSRP: $86.05Now: $81.00Was: $86.05 -
On Sale
COMETIC Head Gasket - 4.500" x 0.036" - M8 C10348-036
COMETIC
MSRP: $86.05Now: $81.00Was: $86.05If you're running forced induction, elevated compression, or nitrous on your Milwaukee 8, a factory head gasket simply won't hold the additional combustion pressures. The COMETIC MLX gasket is...09347534- SKU:
- 09347534
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
MSRP: $86.05Now: $81.00Was: $86.05 -
On Sale
COMETIC Muffler Gasket - Right - Grafoil - M8 C10351
COMETIC
MSRP: $30.40Now: $29.00Was: $30.40A worn or damaged muffler gasket leads to exhaust leaks, increased noise, and potential performance loss—problems that compound over time. The COMETIC Muffler Gasket replaces your factory gasket with...09347811- SKU:
- 09347811
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $30.40Now: $29.00Was: $30.40 -
On Sale
COMETIC Head Gasket - 4.125" - .032" - MLX - Twin Cam C10358-032
COMETIC
MSRP: $86.05Now: $81.00Was: $86.05If you're running a 4.125" big bore on your Twin Cam with forced induction, nitrous, or high compression, a standard head gasket simply won't cut it. The COMETIC MLX delivers the seal integrity and...09347814- SKU:
- 09347814
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $86.05Now: $81.00Was: $86.05 -
On Sale
COMETIC Top End Gasket/O-Ring Cylinder Head Gasket Kit - Yamaha C3694
COMETIC
MSRP: $39.95Now: $38.00Was: $39.95A worn or damaged cylinder head gasket compromises combustion sealing, leading to loss of compression, coolant leaks, and potential engine damage. The COMETIC C3694 Top End Gasket/O-Ring Kit supplies...09351299- SKU:
- 09351299
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $39.95Now: $38.00Was: $39.95 -
On Sale
COMETIC Crankcase Oil Seal Kit - Honda C3139OS
COMETIC
MSRP: $48.95Now: $46.00Was: $48.95Crankcase oil leaks compromise engine efficiency and create messy underbody conditions that invite contamination. The COMETIC Crankcase Oil Seal Kit addresses common Honda leak points with OEM-grade...09351300- SKU:
- 09351300
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $48.95Now: $46.00Was: $48.95Qty in Cart: 0Quantity:Price:MSRP: $48.95Now: $46.00Was: $48.95Subtotal: -
On Sale
COMETIC Top End Gasket Kit - 68 mm - Honda C3171-EST
COMETIC
MSRP: $63.95Now: $60.00Was: $63.95A quality top end gasket kit is non-negotiable if you're serious about engine reliability and peak performance. Cometic's EST gasket technology delivers superior sealing on high-boost and naturally...09347824- SKU:
- 09347824
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
MSRP: $63.95Now: $60.00Was: $63.95 -
On Sale
COMETIC Top End Gasket Kit - Yamaha C3215
COMETIC
MSRP: $44.95Now: $42.00Was: $44.95A top end gasket kit is critical insurance for any engine rebuild or refresh—even one failed seal can lead to compression loss, coolant leaks, and catastrophic engine damage. The COMETIC C3215 uses...09347826- SKU:
- 09347826
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
MSRP: $44.95Now: $42.00Was: $44.95 -
On Sale
COMETIC Top End Gasket Kit - 97 mm - Suzuki C3233-EST
COMETIC
MSRP: $89.95Now: $85.00Was: $89.95A quality gasket kit is the foundation of a reliable top end—any leakage or failure here compromises both power output and engine longevity. Cometic's EST gasket kit seals critical surfaces with...09347827- SKU:
- 09347827
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
MSRP: $89.95Now: $85.00Was: $89.95 -
On Sale
COMETIC Top End Gasket Kit - 99 mm - Suzuki C3234-EST
COMETIC
MSRP: $89.95Now: $85.00Was: $89.95A failing top end gasket compromises combustion sealing and invites coolant leaks that sideline your build. The COMETIC EST kit delivers multi-layered steel construction with Viton rubber coating to...09347828- SKU:
- 09347828
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
MSRP: $89.95Now: $85.00Was: $89.95 -
On Sale
COMETIC Top End Gasket Kit - 101 mm - Suzuki C3235-EST
COMETIC
MSRP: $89.95Now: $85.00Was: $89.95A quality top-end gasket kit is non-negotiable for maintaining cylinder pressure and preventing combustion leakage, especially when running high-output naturally aspirated or forced-induction setups...09347831- SKU:
- 09347831
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
MSRP: $89.95Now: $85.00Was: $89.95 -
On Sale
COMETIC Top End Gasket Kit - 77 mm - Suzuki C3406-EST
COMETIC
MSRP: $69.95Now: $66.00Was: $69.95A failing head gasket compromises cylinder pressure, kills power output, and leaves you stranded. Cometic's EST gasket kit delivers the multi-layered steel construction and Viton rubber coating...09347832- SKU:
- 09347832
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $69.95Now: $66.00Was: $69.95 -
On Sale
COMETIC Top End Gasket Kit - 79 mm - Suzuki C3407-EST
COMETIC
MSRP: $69.95Now: $66.00Was: $69.95A failing top-end gasket kit compromises combustion sealing and engine reliability—especially on high-output 4-stroke builds. Cometic's EST (Extreme Sealing Technology) gasket kit uses multi-layered...09347833- SKU:
- 09347833
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
MSRP: $69.95Now: $66.00Was: $69.95 -
On Sale
COMETIC Top End Gasket Kit - 80 mm - Suzuki C3408-EST
COMETIC
MSRP: $69.95Now: $66.00Was: $69.95A failing head gasket doesn't just leak—it compromises cylinder pressure, kills power output, and can leave you stranded. The COMETIC Top End Gasket Kit uses multi-layered steel construction with...09347834- SKU:
- 09347834
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $69.95Now: $66.00Was: $69.95 -
On Sale
COMETIC Top End Gasket Kit - 82 mm - Suzuki C3409-EST
COMETIC
MSRP: $69.95Now: $66.00Was: $69.95A top-end gasket failure can cost you a race and months of downtime. The COMETIC C3409-EST uses multi-layered steel construction with Viton rubber coating to handle the extreme pressures of modern...09347836- SKU:
- 09347836
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $69.95Now: $66.00Was: $69.95 -
On Sale
COMETIC Top End Gasket Kit - 84 mm - Suzuki C3410-EST
COMETIC
MSRP: $69.95Now: $66.00Was: $69.95A compromised top-end gasket kit leads to compression loss, coolant seepage, and catastrophic engine failure. Cometic's EST gasket kit delivers the sealing integrity and thermal management your...09347837- SKU:
- 09347837
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $69.95Now: $66.00Was: $69.95 -
On Sale
COMETIC Top End Gasket Kit - 97 mm - Yamaha C3540-EST
COMETIC
MSRP: $68.95Now: $65.00Was: $68.95A top-end gasket kit failure can compromise your engine's seal integrity and cost you horsepower—especially in high-boost or naturally aspirated applications pushing cylinder pressures to the limit...09347839- SKU:
- 09347839
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $68.95Now: $65.00Was: $68.95 -
On Sale
COMETIC Top End Gasket Kit - 52.5 mm - Kawasaki C3542
COMETIC
MSRP: $31.95Now: $30.00Was: $31.95A compromised top-end seal means lost compression, oil weeping, and catastrophic engine failure—especially under high boost or sustained high RPM. The COMETIC C3542 gasket kit eliminates these risks...09347840- SKU:
- 09347840
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
MSRP: $31.95Now: $30.00Was: $31.95 -
On Sale
COMETIC Top End Gasket Kit - 88 mm - KTM C3605-EST
COMETIC
MSRP: $74.95Now: $70.00Was: $74.95A failing top-end gasket kit compromises cylinder pressure, reduces power output, and risks catastrophic engine damage. The COMETIC C3605-EST delivers the sealing reliability you need for...09347843- SKU:
- 09347843
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
MSRP: $74.95Now: $70.00Was: $74.95 -
On Sale
COMETIC Top End Gasket Kit - 96 mm - Honda C3621
COMETIC
MSRP: $85.95Now: $81.00Was: $85.95A failing top end gasket compromises combustion seal integrity, leading to lost compression, oil leakage, and costly engine damage. The COMETIC C3621 kit delivers the precision sealing your...09347844- SKU:
- 09347844
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $85.95Now: $81.00Was: $85.95 -
On Sale
COMETIC Top End Gasket Kit - 97 mm - Yamaha C3630
COMETIC
MSRP: $53.95Now: $51.00Was: $53.95A failing top end gasket can cost you races, reliability, and engine integrity. This Cometic gasket kit delivers the sealing performance required for high-output 4-stroke engines—whether naturally...09347845- SKU:
- 09347845
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $53.95Now: $51.00Was: $53.95 -
On Sale
COMETIC Top End Gasket Kit - 77 mm - Yamaha C3695
COMETIC
MSRP: $79.95Now: $75.00Was: $79.95A failing head gasket doesn't just cost you power—it costs you reliability. The COMETIC Top End Gasket Kit ensures a proper seal under high combustion pressures, whether you're running naturally...09347847- SKU:
- 09347847
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $79.95Now: $75.00Was: $79.95 -
On Sale
COMETIC Top End Gasket Kit/O-Ring Cylinder Head Gasket - Yamaha C3731
COMETIC
MSRP: $39.95Now: $38.00Was: $39.95A top-end gasket kit is essential for any cylinder head removal or rebuild—whether you're performing routine maintenance or a complete engine overhaul. Using OEM-equivalent seals ensures proper...09347849- SKU:
- 09347849
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
MSRP: $39.95Now: $38.00Was: $39.95 -
On Sale
COMETIC Top End Gasket Kit - 82 mm - Honda C3735
COMETIC
MSRP: $67.95Now: $64.00Was: $67.95A top-end rebuild demands gasket integrity that matches your engine's output. Cometic's MLS head gaskets and EST technology eliminate hot spots and bore distortion, ensuring consistent sealing under...09347851- SKU:
- 09347851
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
MSRP: $67.95Now: $64.00Was: $67.95 -
On Sale
COMETIC Top End Gasket Kit - KTM/Husqvarna C3808
COMETIC
MSRP: $92.95Now: $87.00Was: $92.95A failing head gasket means catastrophic engine damage and downtime you can't afford. The COMETIC C3808 top end gasket kit delivers the sealing integrity and thermal stability required to handle...09347802- SKU:
- 09347802
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $92.95Now: $87.00Was: $92.95 -
On Sale
COMETIC Top End Gasket Kit - 90 mm - KTM C3779-EST
COMETIC
MSRP: $74.95Now: $70.00Was: $74.95A quality top end gasket kit is non-negotiable when you're rebuilding or maintaining a high-output 4-stroke engine. Cometic's EST technology delivers superior sealing integrity under extreme...09347853- SKU:
- 09347853
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
MSRP: $74.95Now: $70.00Was: $74.95 -
On Sale
COMETIC Top End Gasket Kit - KTM/Husqvarna/Gas Gas C3623
COMETIC
MSRP: $46.95Now: $44.00Was: $46.95A top-end rebuild demands precision gasket sealing to contain combustion pressures and maintain ring seal—especially in high-output 4-stroke engines where even minor leakage degrades performance and...09347804- SKU:
- 09347804
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
MSRP: $46.95Now: $44.00Was: $46.95 -
On Sale
COMETIC Top End Gasket Kit - 79 mm - KTM/Husqvarna/Gas Gas C3595-EST
COMETIC
MSRP: $87.95Now: $83.00Was: $87.95A top-end gasket failure can sideline your bike mid-season, and inferior gaskets invite compression loss, oil leaks, and catastrophic engine damage. The COMETIC EST gasket kit eliminates guesswork...09347806- SKU:
- 09347806
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
MSRP: $87.95Now: $83.00Was: $87.95 -
On Sale
COMETIC Top End Gasket Kit - 90 mm - KTM/Husqvarna/Gas Gas C3790
COMETIC
MSRP: $97.95Now: $92.00Was: $97.95A worn or failing top-end gasket kit compromises combustion sealing and invites coolant or oil leakage—both costly problems for high-performance engines. The COMETIC C3790 kit delivers the precision...09347857- SKU:
- 09347857
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $97.95Now: $92.00Was: $97.95 -
On Sale
COMETIC Top End Gasket Kit - Kawasaki C3803
COMETIC
MSRP: $84.95Now: $80.00Was: $84.95A failing top end gasket compromises cylinder pressure, bleeds horsepower, and risks catastrophic engine damage—especially in high-output 4-stroke engines running forced induction or extreme...09347860- SKU:
- 09347860
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $84.95Now: $80.00Was: $84.95 -
On Sale
COMETIC Top End Gasket Kit - 96 mm - Kawasaki C3806
COMETIC
MSRP: $88.95Now: $84.00Was: $88.95A quality gasket kit is non-negotiable for any top-end rebuild—it's the barrier between combustion pressures and coolant passages, and failure means catastrophic engine damage. The COMETIC C3806 uses...09347861- SKU:
- 09347861
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $88.95Now: $84.00Was: $88.95 -
On Sale
COMETIC Top End Gasket Kit - 48 mm - Kawasaki/Suzuki C7737
COMETIC
MSRP: $28.95Now: $27.00Was: $28.95A failing top end gasket compromises combustion chamber sealing, causing power loss, coolant leakage, and potential engine damage. The COMETIC C7737 kit delivers OEM-spec sealing with multi-layered...09347867- SKU:
- 09347867
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
MSRP: $28.95Now: $27.00Was: $28.95 -
On Sale
COMETIC Bottom End Gasket Kit - Honda C3139BE
COMETIC
MSRP: $113.95Now: $107.00Was: $113.95A complete bottom end gasket kit is non-negotiable for any engine rebuild—missed seals lead to oil leaks, contamination, and catastrophic failure. The Cometic C3139BE delivers comprehensive coverage...09347868- SKU:
- 09347868
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
MSRP: $113.95Now: $107.00Was: $113.95Qty in Cart: 0Quantity:Price:MSRP: $113.95Now: $107.00Was: $113.95Subtotal: -
On Sale
COMETIC Top End Gasket Kit - 98 mm - Honda C3141-EST
COMETIC
MSRP: $99.95Now: $94.00Was: $99.95A failing top end gasket compromises compression, causes coolant seepage, and tanks performance—especially in high-output naturally aspirated or forced-induction engines. Cometic's EST gasket kit...09347869- SKU:
- 09347869
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
MSRP: $99.95Now: $94.00Was: $99.95 -
On Sale
COMETIC Water Pump Repair Kit - Yamaha C7908WP
COMETIC
MSRP: $47.95Now: $45.00Was: $47.95Water pump failure compromises your engine's cooling system, risking catastrophic overheating and internal damage. This Cometic repair kit supplies all the precision seals, O-rings, and bearings...09347877- SKU:
- 09347877
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
MSRP: $47.95Now: $45.00Was: $47.95 -
On Sale
COMETIC Top End Gasket Kit - 95 mm - Polaris C3039
COMETIC
MSRP: $158.95Now: $149.00Was: $158.95A failing top-end gasket will compromise your engine's combustion seal and cost you power—or worse, strand you trackside. This Cometic gasket kit delivers the precision sealing your high-performance...09347878- SKU:
- 09347878
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
MSRP: $158.95Now: $149.00Was: $158.95Qty in Cart: 0Quantity:Price:MSRP: $158.95Now: $149.00Was: $158.95Subtotal: -
On Sale
COMETIC Top End Gasket Kit - Honda C3112
COMETIC
MSRP: $108.95Now: $102.00Was: $108.95A failed top end gasket can sideline your engine and compromise months of tuning work. The COMETIC C3112 Top End Gasket Kit delivers the sealing integrity and heat management needed to maintain peak...09347879- SKU:
- 09347879
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
MSRP: $108.95Now: $102.00Was: $108.95
