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!
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- Qty in Cart
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- Price
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COMETIC Bottom End Gasket Kit - Honda C3112BE
COMETIC
$126.95A complete bottom end overhaul demands precision-engineered gaskets and seals that prevent oil leakage, maintain proper compression, and ensure long-term engine reliability. The COMETIC C3112BE...09347880- SKU:
- 09347880
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$126.95 -
COMETIC Top End Gasket Kit - 92 mm - Can-Am C3459-EST
COMETIC
$189.95A failed top end gasket can sideline your engine and tank your performance gains. The COMETIC C3459-EST delivers the sealing reliability demanded by high-output 4-stroke engines—whether naturally...09347881- SKU:
- 09347881
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$189.95 -
COMETIC Top End Gasket Kit - 94 mm - Polaris C3546-EST
COMETIC
$104.95A degraded or failing top end gasket compromises cylinder pressure, reduces power output, and risks catastrophic engine damage. The COMETIC C3546-EST delivers the sealing integrity your high-output...09347882- SKU:
- 09347882
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
$104.95 -
COMETIC Top End Gasket Kit - 82.5 mm - Yamaha C3617
COMETIC
$122.95A failing head gasket can cost you race time and engine damage. The COMETIC Top End Gasket Kit delivers the sealing reliability you need for high-horsepower, high-boost applications—whether you're...09347883- SKU:
- 09347883
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$122.95Qty in Cart: 0Quantity:Price:$122.95Subtotal: -
COMETIC Cylinder Head/Base Gasket Kit C10362-HB
COMETIC
$134.35A quality gasket kit is non-negotiable for any engine rebuild or performance upgrade—it's your seal against coolant leaks, oil seepage, and catastrophic pressure loss. The COMETIC C10362-HB delivers...09347822- SKU:
- 09347822
- Availability:
- Ships Same Business Day
- Weight:
- 0.23 LBS
$134.35 -
COMETIC Top End Gasket Kit - 54.5 mm - Kawasaki C3543
COMETIC
$31.95A quality top end gasket kit is critical to maintaining compression, preventing coolant and oil leaks, and ensuring reliable performance during high-output operation. The COMETIC C3543 is engineered...09347841- SKU:
- 09347841
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$31.95 -
COMETIC Top End Gasket Kit - 77 mm - Yamaha C3549-EST
COMETIC
$74.95A failing top end gasket compromises compression, kills power, and leaves you stranded. Cometic's EST gasket kit seals high-output 4-stroke engines reliably, whether naturally aspirated or boosted,...09347842- SKU:
- 09347842
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$74.95 -
COMETIC Top End Gasket Kit - 79 mm - Honda C3635
COMETIC
$67.95A quality top end gasket kit is critical for maintaining cylinder pressure and preventing catastrophic coolant or oil leaks—especially when running high-horsepower naturally aspirated or...09347846- SKU:
- 09347846
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$67.95Qty in Cart: 0Quantity:Price:$67.95Subtotal: -
COMETIC Top End Gasket Kit - 96 mm - Kawasaki C3696
COMETIC
$85.95A failed head gasket means downtime and expensive engine damage—especially on high-output 4-stroke engines running elevated cylinder pressures. The COMETIC Top End Gasket Kit delivers the sealing...09347848- SKU:
- 09347848
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$85.95 -
COMETIC Top End Gasket Kit - 96 mm - Honda C3733
COMETIC
$85.95A failing top end gasket compromises combustion sealing and allows coolant or oil to escape—both catastrophic for engine reliability and performance. This COMETIC kit delivers OEM-correct fitment...09347850- SKU:
- 09347850
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$85.95 -
COMETIC Top End Gasket Kit - KTM/Husqvarna/Gas Gas C3636
COMETIC
$47.95A failed top-end gasket can cost you race time, engine damage, and thousands in repairs. The COMETIC C3636 kit delivers OEM-quality sealing with performance-grade materials engineered to handle the...09347801- SKU:
- 09347801
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$47.95 -
COMETIC Top End Gasket Kit - 80 mm - Yamaha C3766
COMETIC
$79.95A failing top-end gasket compromises combustion chamber sealing, killing power output and risking catastrophic engine damage. The COMETIC C3766 kit delivers the precision sealing your high-output...09347852- SKU:
- 09347852
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$79.95 -
COMETIC Top End Gasket Kit - KTM/Husqvarna/Gas Gas C3811
COMETIC
$79.95A failed top end gasket can sideline your bike and compromise engine integrity—especially when you're pushing high horsepower through naturally aspirated or forced induction setups. This Cometic kit...09347803- SKU:
- 09347803
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$79.95Qty in Cart: 0Quantity:Price:$79.95Subtotal: -
COMETIC Top End Gasket Kit - 91 mm - KTM C3784-EST
COMETIC
$74.95A quality gasket kit is non-negotiable for any top-end rebuild—it's your seal against compression loss, coolant weeping, and catastrophic engine failure. The COMETIC C3784-EST delivers the sealing...09347854- SKU:
- 09347854
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$74.95 -
COMETIC Top End Gasket Kit - 97 mm - Yamaha C3786
COMETIC
$78.95A failing top end gasket will compromise combustion sealing and cost you power—or worse, create catastrophic engine damage. This Cometic kit delivers the complete solution with precision-engineered...09347855- SKU:
- 09347855
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$78.95 -
COMETIC Top End Gasket Kit - 79 mm - Kawasaki C3787
COMETIC
$84.95A failing head gasket will cost you power, reliability, and time on the track or in the shop. COMETIC's multi-layered steel design with Viton rubber coating distributes combustion pressure evenly...09347856- SKU:
- 09347856
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$84.95 -
COMETIC Top End Gasket Kit - 95 mm - KTM/Husqvarna/Gas Gas C3604-EST
COMETIC
$74.95A failing top end gasket compromises combustion sealing, kills power, and invites catastrophic engine damage. The COMETIC C3604-EST delivers OEM-spec sealing reliability with advanced multi-layer...09347807- SKU:
- 09347807
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$74.95 -
COMETIC Top End Gasket Kit - 96 mm - Honda C3801
COMETIC
$85.95A failed head gasket means catastrophic engine damage and costly downtime. The COMETIC Top End Gasket Kit delivers the sealing integrity and thermal management your high-output engine demands,...09347859- SKU:
- 09347859
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$85.95 -
COMETIC Top End Gasket Kit - 88 mm - KTM/Husqvarna/Gas Gas C3810
COMETIC
$102.95A top end gasket kit failure can mean catastrophic engine damage and costly downtime. Cometic's multi-layered design with EST (Extreme Sealing Technology) delivers superior heat dissipation and bore...09347862- SKU:
- 09347862
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$102.95Qty in Cart: 0Quantity:Price:$102.95Subtotal: -
COMETIC Top End Gasket Kit - 97 mm - Yamaha C3813
COMETIC
$87.95A compromised top end gasket is one of the quickest ways to lose compression, power, and reliability. The COMETIC C3813 Top End Gasket Kit is engineered for high-output 4-stroke engines that demand...09347863- SKU:
- 09347863
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$87.95 -
COMETIC Top End Gasket Kit - KTM C3818
COMETIC
$47.95A quality top-end gasket kit is essential for maintaining cylinder pressure, preventing coolant leaks, and maximizing power output on high-performance 4-stroke engines. Cometic's EST (Extreme Sealing...09347864- SKU:
- 09347864
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$47.95 -
COMETIC Top End Gasket Kit - 47 mm - Kawasaki/Suzuki C7682
COMETIC
$28.95A failing top-end gasket can compromise combustion chamber sealing, reduce ring seal efficiency, and lead to catastrophic engine failure. The COMETIC C7682 kit delivers OEM-spec sealing with...09347866- SKU:
- 09347866
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$28.95 -
COMETIC Top End Gasket Kit - 104 mm - Yamaha C3143-EST
COMETIC
$109.95A failing head gasket doesn't just leak—it compromises combustion seal integrity, reduces ring tension, and kills horsepower. The COMETIC EST Top End Gasket Kit is engineered to handle the cylinder...09347870- SKU:
- 09347870
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
$109.95 -
COMETIC Top End Gasket Kit - 101 mm - Honda C3156-EST
COMETIC
$99.95A failing top-end gasket kit costs you power, reliability, and race-day credibility. The COMETIC C3156-EST delivers the sealing integrity and thermal management your high-output Honda engine demands,...09347871- SKU:
- 09347871
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$99.95Qty in Cart: 0Quantity:Price:$99.95Subtotal: -
COMETIC Bottom End Gasket Kit with Oil Seals - Yamaha C7908BE
COMETIC
$92.95A complete bottom-end rebuild demands precision-engineered gaskets and seals that maintain cylinder pressure and prevent oil leakage under extreme conditions. The COMETIC C7908BE kit supplies all...09347874- SKU:
- 09347874
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$92.95 -
COMETIC Complete Gasket Kit - Polaris C3826
COMETIC
$424.95Engine reliability under extreme pressure demands a complete gasket solution—not piecemeal replacements that leave weak points in your seal strategy. The COMETIC Complete Gasket Kit ensures every...09347821- SKU:
- 09347821
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
$424.95 -
COMETIC Oil Seal Kit - Yamaha C7908OS
COMETIC
$36.95Oil leaks compromise engine performance and can lead to catastrophic damage if left unaddressed. The COMETIC Oil Seal Kit for Yamaha engines delivers OEM-grade sealing with precision manufacturing,...09351301- SKU:
- 09351301
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$36.95 -
COMETIC Clutch/Ignition Gasket Kit - Yamaha C7908CM
COMETIC
$25.95Factory gaskets deteriorate with heat cycles and age, leading to oil seepage and potential engine damage if left unaddressed. The COMETIC Clutch/Ignition Gasket Kit delivers OEM-equivalent sealing...09347875- SKU:
- 09347875
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$25.95 -
COMETIC Top End Gasket Kit - 98 mm - Yamaha C3178-EST
COMETIC
$90.95A failed head gasket means catastrophic engine damage and downtime you can't afford. The COMETIC Top End Gasket Kit with EST (Extreme Sealing Technology) delivers the reliability and thermal...09347825- SKU:
- 09347825
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$90.95Qty in Cart: 0Quantity:Price:$90.95Subtotal: -
COMETIC Top End Gasket Kit - 99 mm - Yamaha C3279-EST
COMETIC
$90.95A failing top-end gasket will cost you power and reliability—and on high-output 4-stroke engines running boost or chasing peak naturally aspirated performance, factory gaskets often can't handle the...09347829- SKU:
- 09347829
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$90.95 -
COMETIC Base Gasket - 0.010" C10361
COMETIC
$49.30A precision base gasket is critical to maintaining a leak-free seal between your engine block and carburetor or intake manifold—any compromise here directly impacts fuel atomization, air-fuel ratio...09347885- SKU:
- 09347885
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
$49.30 -
COMETIC Head Gasket - 0.024" C10362
COMETIC
$86.05A head gasket is your engine's critical seal—it prevents combustion gases and coolant from leaking into the oil galleries, which leads to catastrophic engine failure if ignored. The COMETIC C10362 is...09347886- SKU:
- 09347886
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$86.05 -
COMETIC Crankcase Gasket - 0.012" C10363
COMETIC
$48.25A properly sealed crankcase is fundamental to engine longevity and performance. Oil leaks compromise both efficiency and cleanliness, while a compromised gasket invites contamination into your...09347887- SKU:
- 09347887
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$48.25 -
Intake Gasket - SBC w/MRE 13-Degree Heads IR1180094KF
COMETIC
$17.93A compromised intake gasket will leak boost, kill combustion efficiency, and leave power on the table. This composite gasket is engineered for Small Block Chevy engines running MRE 13-degree heads,...CAGIR1180094KF- SKU:
- CAGIR1180094KF
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
$17.93 -
4.100 MLX Head Gasket .051 - GM LS 6.2L LH C5986-051
COMETIC
$113.09A head gasket is the critical seal between your cylinder head and engine block—and it's the first component to fail under high boost, elevated compression, or sustained track conditions. The 4.100...CAGC5986-051- SKU:
- CAGC5986-051
- Availability:
- Ships Same Business Day
- Weight:
- 1.04 LBS
$113.09 -
4.100 MLX Head Gasket .051 - GM LS 6.2L RH C5985-051
COMETIC
$113.09A head gasket is the critical seal between your cylinder head and engine block—get it wrong, and you're risking catastrophic coolant and oil leaks that compromise performance and engine longevity...CAGC5985-051- SKU:
- CAGC5985-051
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
$113.09 -
4.185 MLS Head Gasket .051 - GM LSX LH C5936-051
COMETIC
$87.95A properly sealed cylinder head is non-negotiable for engine reliability and peak performance. This MLS head gasket delivers the durability and precision fit required for high-boost applications,...CAGC5936-051- SKU:
- CAGC5936-051
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
$87.95 -
4.185 MLS Head Gasket .045 GM LSX LH C5936-045
COMETIC
$87.95A quality head gasket is the critical seal between your cylinder head and block—any compromise here means combustion leaks, coolant loss, and catastrophic engine failure. This 4.185" MLS gasket...CAGC5936-045- SKU:
- CAGC5936-045
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$87.95Qty in Cart: 0Quantity:Price:$87.95Subtotal: -
4.185 MLS Head Gasket .040 - GM LSX LH C5936-040
COMETIC
$87.95A properly sealed combustion chamber is non-negotiable for any high-performance LSX build. This multi-layer steel head gasket delivers the clamping force and thermal stability required to handle...CAGC5936-040- SKU:
- CAGC5936-040
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$87.95 -
4.185 MLS Head Gasket .051 - GM LSX RH C5935-051
COMETIC
$87.95A quality head gasket is the seal that separates combustion from coolant passages—failure here means catastrophic engine damage. This MLS (Multi-Layer Steel) gasket delivers the clamping force and...CAGC5935-051- SKU:
- CAGC5935-051
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
$87.95
