Cometic
Cometic is a leading manufacturer of high-performance motorcycle gaskets trusted by engine builders, tuners and everyday riders. Known for precision fitment and race-proven sealing technology, Cometic produces premium head gaskets, top-end kits, bottom-end kits and complete engine gasket sets for Harley-Davidson, metric bikes, ATVs and UTVs. Whether restoring a Twin Cam, upgrading an M8 or rebuilding Yamaha, Honda, Polaris or Suzuki engines, Cometic delivers the reliability and durability riders demand.
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Out of stock
Cometic - C9215 - Main Drive Gear Seal - Big Twin/M8
Cometic
$14.65Cometic - C9215 - Main Drive Gear Seal - Big Twin/M8FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become...$14.65 -
Out of stock
Cometic - C9686 - Carburetor Backplate O-Ring
Cometic
$6.25Cometic - C9686 - Carburetor Backplate O-Ring Features Carburetor backing plate O-ring Replacement Part for OEM Number(s): 11292 Specs Riding Style Street Product...$6.25 -
Out of stock
Cometic - C9227 - Carburetor to Manifold Seal - 50 mm - Twin Cam
Cometic
$7.95Cometic - C9227 - Carburetor to Manifold Seal - 50 mm - Twin CamFeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or...$7.95 -
Out of stock
Cometic - C9224 - Outer Rocker O-Ring
Cometic
$14.65Cometic - C9224 - Outer Rocker O-RingFeaturesManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMade in the U.S.A.SpecsRiding StyleStreetApplicationLower...$14.65 -
Out of stock
Cometic - C9262 - Main Shaft Seal - EVO
Cometic
$10.95Cometic - C9262 - Main Shaft Seal - EVO Features High-quality products for long-term reliability Manufactured from premium fuel-resistant materials that will not creep, crack or become...$10.95 -
Cometic - C9359 - Main Shaft Seal - EVO
Cometic
$8.95Cometic - C9359 - Main Shaft Seal - EVOFeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMade in...$8.95 -
Cometic - C9354 - Clutch Release Lever Seal O-ring - EVO
Cometic
$5.95Cometic - C9354 - Clutch Release Lever Seal O-ring - EVOFeaturesHigh-quality product for long-term reliabilityMade in the USAReplacement Part for OEM Number(s): 3710184SpecsMaterialVitonRiding...$5.95 -
Out of stock
Cometic - C10363 - Crankcase Gasket - 0.012"
Cometic
$48.25Cometic - C10363 - Crankcase Gasket - 0.012"FeaturesHigh-quality products for long term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMade...$48.25 -
Out of stock
Cometic - C10232 - Muffler Gasket - M8/FXST/XL
Cometic
$41.95Cometic - C10232 - Muffler Gasket - M8/FXST/XL Features High-quality products for long-term reliability Manufactured from premium fuel-resistant materials that will not creep, crack or become...$41.95 -
Cometic - C10351 - Muffler Gasket - Right - Grafoil® - M8
Cometic
$30.40Cometic - C10351 - Muffler Gasket - Right - Grafoil® - M8 Features High-quality products for long-term reliability Manufactured from premium fuel-resistant materials that will not creep,...$30.40 -
Cometic - C10362 - Head Gasket - 0.024"
Cometic
$86.05Cometic - C10362 - Head Gasket - 0.024"FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become...$86.05 -
Cometic - C10362-HB - Cylinder Head/Base Gasket Kit
Cometic
$134.35Cometic - C10362-HB - Cylinder Head/Base Gasket KitFeaturesContains a pair of 106 mm bore MLX Multi layer steel with stopper layer head gaskets, and a pair of Single Layer Steel (SLS) base gaskets...$134.35 -
Cometic - C10361 - Base Gasket - 0.010"
Cometic
$49.30Cometic - C10361 - Base Gasket - 0.010"FeaturesHigh quality products for long-term reliabilityManufactured from premium fuel-resistant materialsViton gaskets feature a stainless steel core with a ...$49.30 -
Out of stock
Cometic - C10359 - Rocker Box Rebuild Gasket 88"/96"/103" with O-Rings and Tappet Gaskets - Twin Cam
Cometic
$61.90Cometic - C10359 - Rocker Box Rebuild Gasket 88"/96"/103" with O-Rings and Tappet Gaskets - Twin CamFeaturesPremium materials used for specific applications to provide a long, service free lifeKit...$61.90 -
Out of stock
Cometic - C10358-036 - Head Gasket - 4.125" - .036" - MLX - Twin Cam
Cometic
$86.05Cometic - C10358-036 - Head Gasket - 4.125" - .036" - MLX - Twin CamFeaturesManufactured from premium fuel-resistant materials that will not creep, crack or become brittle4.125" big bore is a popular...$86.05 -
Cometic - C10358-032 - Head Gasket - 4.125" - .032" - MLX - Twin Cam
Cometic
$86.05Cometic - C10358-032 - Head Gasket - 4.125" - .032" - MLX - Twin CamFeaturesManufactured from premium fuel-resistant materials that will not creep, crack or become brittle4.125" big bore is a popular...$86.05 -
Out of stock
Cometic - C10352 - Exhaust Header Gasket
Cometic
$20.95Cometic - C10352 - Exhaust Header GasketFeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMade in...$20.95 -
Cometic - C10348-036 - Head Gasket - 4.500" x 0.036" - M8
Cometic
$86.05Cometic - C10348-036 - Head Gasket - 4.500" x 0.036" - M8FeaturesMLX Gasket (Multi-Layer-Xtreme) features an extra “stopper” fold-over layer providing a torque limiting surface that prevents yielding...$86.05 -
Cometic - C10347-036 - Head Gasket - 4.430" x 0.036" - M8
Cometic
$86.05Cometic - C10347-036 - Head Gasket - 4.430" x 0.036" - M8FeaturesMLX Gasket (Multi-Layer-Xtreme) features an extra “stopper” fold-over layer providing a torque limiting surface that prevents yielding...$86.05 -
Cometic - C10336-040 - Head Gasket - 4.320" x 0.040" - M8
Cometic
$86.05Cometic - C10336-040 - Head Gasket - 4.320" x 0.040" - M8FeaturesMLX Gasket (Multi-Layer-Xtreme) features an extra “stopper” fold-over layer providing a torque limiting surface that prevents yielding...$86.05 -
Cometic - C10336-036 - Head Gasket - 4.320" x 0.036" - M8
Cometic
$86.05Cometic - C10336-036 - Head Gasket - 4.320" x 0.036" - M8FeaturesMLX Gasket (Multi-Layer-Xtreme) features an extra “stopper” fold-over layer providing a torque limiting surface that prevents yielding...$86.05 -
Cometic - C10336-032 - Head Gasket - 4.320" x 0.032" - M8
Cometic
$86.05Cometic - C10336-032 - Head Gasket - 4.320" x 0.032" - M8FeaturesMLX Gasket (Multi-Layer-Xtreme) features an extra “stopper” fold-over layer providing a torque limiting surface that prevents yielding...$86.05 -
Cometic - C10346-036 - Head Gasket - 4.250" x 0.036" - M8
Cometic
$86.05Cometic - C10346-036 - Head Gasket - 4.250" x 0.036" - M8FeaturesMLX Gasket (Multi-Layer-Xtreme) features an extra “stopper” fold-over layer providing a torque limiting surface that prevents yielding...$86.05 -
Out of stock
Cometic - C10345-036 - Head Gasket - 3.937" x 0.036" - M8
Cometic
$86.05Cometic - C10345-036 - Head Gasket - 3.937" x 0.036" - M8FeaturesMLX Gasket (Multi-Layer-Xtreme) features an extra “stopper” fold-over layer providing a torque limiting surface that prevents yielding...$86.05 -
Cometic - C10246 - Transmission Top Cover Gasket - M8
Cometic
$25.15Cometic - C10246 - Transmission Top Cover Gasket - M8FeaturesHigh-quality products for long-term reliabilityKit includes all necessary gaskets, seals and O-rings needed for each applicationMade in...$25.15 -
Cometic - C10243 - Oil Pan Gasket - Softail
Cometic
$22.00Cometic - C10243 - Oil Pan Gasket - SoftailFeaturesHigh-quality products for long-term reliabilityKit includes all necessary gaskets, seals and O-rings needed for each applicationMade in the...$22.00 -
Out of stock
Cometic - C10249 - Transmission Oil Pan Gasket Rebuild Kit - Softail
Cometic
$130.15Cometic - C10249 - Transmission Oil Pan Gasket Rebuild Kit - SoftailFeaturesHigh-quality products for long-term reliabilityKit includes all necessary gaskets, seals and O-rings needed for each...$130.15 -
Cometic - C10275 - Complete Engine/Primary Gasket Kit
Cometic
$340.15Cometic - C10275 - Complete Engine/Primary Gasket KitFeaturesEvery gasket in the kit uses the best materials possible for its intended applicationComplete kit includes motor gasket kit plus primary,...$340.15 -
Out of stock
Cometic - C10271 - Complete Engine/Primary Gasket Kit
Cometic
$340.15Cometic - C10271 - Complete Engine/Primary Gasket KitFeaturesEvery gasket in the kit uses the best materials possible for its intended applicationComplete kit includes motor gasket kit plus primary,...$340.15 -
Cometic - C10269 - Complete Engine/Primary Gasket Kit
Cometic
$340.15Cometic - C10269 - Complete Engine/Primary Gasket KitFeaturesEvery gasket in the kit uses the best materials possible for its intended applicationComplete kit includes motor gasket kit plus primary,...$340.15 -
Cometic - C10266 - Complete Engine/Primary Gasket Kit
Cometic
$340.15Cometic - C10266 - Complete Engine/Primary Gasket KitFeaturesEvery gasket in the kit uses the best materials possible for its intended applicationComplete kit includes motor gasket kit plus primary,...$340.15 -
Cometic - C10260 - Complete Engine/Primary Gasket Kit
Cometic
$330.70Cometic - C10260 - Complete Engine/Primary Gasket KitFeaturesEvery gasket in the kit uses the best materials possible for its intended applicationComplete kit includes motor gasket kit plus primary,...$330.70 -
Cometic - C10256 - Motor Gasket Kit - M8
Cometic
$267.70Cometic - C10256 - Motor Gasket Kit - M8FeaturesEvery gasket in these kit uses the best materials possible for its intended applicationMade in the USASpecsRiding StyleStreetThickness...$267.70 -
Cometic - C10252 - Motor Gasket Kit - M8
Cometic
$259.30Cometic - C10252 - Motor Gasket Kit - M8FeaturesEvery gasket in these kit uses the best materials possible for its intended applicationMade in the USASpecsProduct NameGasket KitBore Size Imperial4...$259.30 -
Cometic - C10250 - Motor Gasket Kit - M8
Cometic
$267.70Cometic - C10250 - Motor Gasket Kit - M8FeaturesEvery gasket in these kit uses the best materials possible for its intended applicationMade in the USASpecsBore Size Imperial3.937''Riding...$267.70 -
Cometic - C10223 - Top End Gasket Kit with 0.040" Head Gasket - M8
Cometic
$240.40Cometic - C10223 - Top End Gasket Kit with 0.040" Head Gasket - M8FeaturesHead gasket material allows heat to be drawn away from the combustion ring and dissipated evenly across the gasket surface to...$240.40 -
Out of stock
Cometic - C10219 - Top End Gasket Kit with 0.040" Head Gasket - M8
Cometic
$240.40Cometic - C10219 - Top End Gasket Kit with 0.040" Head Gasket - M8FeaturesHead gasket material allows heat to be drawn away from the combustion ring and dissipated evenly across the gasket surface to...$240.40 -
Cometic - C10217 - Top End Gasket Kit with 0.040" Head Gasket - M8
Cometic
$240.40Cometic - C10217 - Top End Gasket Kit with 0.040" Head Gasket - M8FeaturesHead gasket material allows heat to be drawn away from the combustion ring and dissipated evenly across the gasket surface to...$240.40 -
Cometic - C9200F1 - Output Gear Seal - Twin Cam/M8
Cometic
$11.95Cometic - C9200F1 - Output Gear Seal - Twin Cam/M8FeaturesHigh-quality products for long-term reliabilityMade in the USAReplacement Part for OEM Number(s): 12077SpecsTypeOutput...$11.95 -
Cometic - C10242 - Base Gasket - Gen-2 Embossing - M8
Cometic
$33.55Cometic - C10242 - Base Gasket - Gen-2 Embossing - M8FeaturesCenter or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirementsOuter layers are...$33.55
Cometic Gaskets – High-Performance Engine, Primary and Top-End Gasket Kits
Cometic has built its reputation on manufacturing advanced gasket solutions engineered for long-term strength, thermal stability and consistent sealing under high-stress conditions. Their gaskets are developed using premium materials including MLS, EST and fiber options to meet the demands of stock engines, high-compression builds and performance upgrades. Riders and engine builders trust Cometic head gaskets and top-end gasket kits for their ability to maintain a secure seal even under extreme heat, pressure and vibration.
Supporting a wide range of platforms, Cometic offers complete gasket solutions for Harley-Davidson engines such as Evolution, Twin Cam and Milwaukee-Eight, along with extensive coverage for Yamaha, Honda, Kawasaki, Suzuki, KTM, Polaris and Arctic Cat machines. Their catalog includes primary gasket kits, rocker box gaskets, cylinder base gaskets, cam change kits and complete engine rebuild sets designed for precise fit and dependable performance.
Whether you’re performing routine maintenance, completing an engine rebuild or pushing a high-output setup, Cometic provides the sealing technology needed to keep your motorcycle or powersports engine performing at its best. Every gasket is engineered to OEM-level precision or better, delivering a combination of durability, accuracy and performance that has made Cometic a top choice in the racing and engine-building community.