Cometic Milwaukee 8 3.937in Top End Kit w/ .040 Head Gasket — Fits 2017-2018 Harley-Davidson

SKU: CGSC10217
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Cometic Gasket

Cometic Gasket is the world leader in custom multi-layer steel head gaskets for performance and motorsport engines. From off-the-shelf MLS for popular platforms to bespoke gaskets for race-only builds, Cometic seals everything from Honda B-series to LSX.

Cometic Milwaukee 8 3.937" Top End Kit with .040" Head Gasket

Elevate your Harley-Davidson Milwaukee 8 engine's performance with this premium Top End Kit from Cometic Gasket. Designed for 2017 and 2018 models, this kit features a 3.937-inch bore size and includes a precisely engineered .040-inch head gasket, perfect for engine upgrades and rebuilds.

Kit Components & Benefits:

  • Increased Displacement: The 3.937-inch bore size allows for a significant increase in engine displacement, leading to more power and torque.
  • Optimized Head Gasket: The included .040-inch head gasket is designed for optimal compression and sealing, ensuring reliable performance under high stress.
  • High-Quality Materials: Cometic Gasket utilizes top-tier materials for superior durability, heat resistance, and sealing capabilities.
  • Complete Top End Solution: This kit provides essential components for a comprehensive top-end overhaul or performance upgrade.
  • Vehicle Specific Fitment: Engineered for a precise fit on a wide range of 2017-2018 Harley-Davidson Milwaukee 8 motorcycles, including various Softail, Touring, and CVO models.

Whether you're aiming for increased horsepower, better throttle response, or a complete engine refresh, this Cometic Top End Kit is an excellent choice. Experience the difference quality components make. Find this and other performance parts at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2018-2020 Harley-Davidson FLDE Deluxe 107 Base
2018-2021 Harley-Davidson FLFBS Fat Boy 114 Base
2018-2021 Harley-Davidson FLHCS Heritage Classic 114 Base
2017-2021 Harley-Davidson FLHR Road King Base
2017-2021 Harley-Davidson FLHRXS Road King Special Base
2017-2019 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
2017-2021 Harley-Davidson FLHTK Ultra Limited Base
2017-2019 Harley-Davidson FLHTKL Ultra Limited Low Base
2017-2021 Harley-Davidson FLHX Street Glide Base
2017-2021 Harley-Davidson FLHXS Street Glide Special Base
2017-2019 Harley-Davidson FLTRU Road Glide Ultra Base
2017-2021 Harley-Davidson FLTRX Road Glide Base
2017-2021 Harley-Davidson FLTRXS Road Glide Special Base
2018-2020 Harley-Davidson FXBRS Breakout 114 Base
2018-2021 Harley-Davidson FXFBS Fat Bob 114 Base

Product Details

Product Description
Part Numbers
Sizing & Fit

About Cometic Gasket

Cometic Gasket is the world leader in custom multi-layer steel head gaskets for performance and motorsport engines. From off-the-shelf MLS for popular platforms to bespoke gaskets for race-only builds, Cometic seals everything from Honda B-series to LSX.

Cometic Milwaukee 8 3.937" Top End Kit with .040" Head Gasket

Elevate your Harley-Davidson Milwaukee 8 engine's performance with this premium Top End Kit from Cometic Gasket. Designed for 2017 and 2018 models, this kit features a 3.937-inch bore size and includes a precisely engineered .040-inch head gasket, perfect for engine upgrades and rebuilds.

Kit Components & Benefits:

  • Increased Displacement: The 3.937-inch bore size allows for a significant increase in engine displacement, leading to more power and torque.
  • Optimized Head Gasket: The included .040-inch head gasket is designed for optimal compression and sealing, ensuring reliable performance under high stress.
  • High-Quality Materials: Cometic Gasket utilizes top-tier materials for superior durability, heat resistance, and sealing capabilities.
  • Complete Top End Solution: This kit provides essential components for a comprehensive top-end overhaul or performance upgrade.
  • Vehicle Specific Fitment: Engineered for a precise fit on a wide range of 2017-2018 Harley-Davidson Milwaukee 8 motorcycles, including various Softail, Touring, and CVO models.

Whether you're aiming for increased horsepower, better throttle response, or a complete engine refresh, this Cometic Top End Kit is an excellent choice. Experience the difference quality components make. Find this and other performance parts at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2018-2020 Harley-Davidson FLDE Deluxe 107 Base
2018-2021 Harley-Davidson FLFBS Fat Boy 114 Base
2018-2021 Harley-Davidson FLHCS Heritage Classic 114 Base
2017-2021 Harley-Davidson FLHR Road King Base
2017-2021 Harley-Davidson FLHRXS Road King Special Base
2017-2019 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
2017-2021 Harley-Davidson FLHTK Ultra Limited Base
2017-2019 Harley-Davidson FLHTKL Ultra Limited Low Base
2017-2021 Harley-Davidson FLHX Street Glide Base
2017-2021 Harley-Davidson FLHXS Street Glide Special Base
2017-2019 Harley-Davidson FLTRU Road Glide Ultra Base
2017-2021 Harley-Davidson FLTRX Road Glide Base
2017-2021 Harley-Davidson FLTRXS Road Glide Special Base
2018-2020 Harley-Davidson FXBRS Breakout 114 Base
2018-2021 Harley-Davidson FXFBS Fat Bob 114 Base

Product Details

Product Description

About Cometic Gasket

Cometic Gasket is the world leader in custom multi-layer steel head gaskets for performance and motorsport engines. From off-the-shelf MLS for popular platforms to bespoke gaskets for race-only builds, Cometic seals everything from Honda B-series to LSX.

Cometic Milwaukee 8 3.937" Top End Kit with .040" Head Gasket

Elevate your Harley-Davidson Milwaukee 8 engine's performance with this premium Top End Kit from Cometic Gasket. Designed for 2017 and 2018 models, this kit features a 3.937-inch bore size and includes a precisely engineered .040-inch head gasket, perfect for engine upgrades and rebuilds.

Kit Components & Benefits:

  • Increased Displacement: The 3.937-inch bore size allows for a significant increase in engine displacement, leading to more power and torque.
  • Optimized Head Gasket: The included .040-inch head gasket is designed for optimal compression and sealing, ensuring reliable performance under high stress.
  • High-Quality Materials: Cometic Gasket utilizes top-tier materials for superior durability, heat resistance, and sealing capabilities.
  • Complete Top End Solution: This kit provides essential components for a comprehensive top-end overhaul or performance upgrade.
  • Vehicle Specific Fitment: Engineered for a precise fit on a wide range of 2017-2018 Harley-Davidson Milwaukee 8 motorcycles, including various Softail, Touring, and CVO models.

Whether you're aiming for increased horsepower, better throttle response, or a complete engine refresh, this Cometic Top End Kit is an excellent choice. Experience the difference quality components make. Find this and other performance parts at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2018-2020 Harley-Davidson FLDE Deluxe 107 Base
2018-2021 Harley-Davidson FLFBS Fat Boy 114 Base
2018-2021 Harley-Davidson FLHCS Heritage Classic 114 Base
2017-2021 Harley-Davidson FLHR Road King Base
2017-2021 Harley-Davidson FLHRXS Road King Special Base
2017-2019 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
2017-2021 Harley-Davidson FLHTK Ultra Limited Base
2017-2019 Harley-Davidson FLHTKL Ultra Limited Low Base
2017-2021 Harley-Davidson FLHX Street Glide Base
2017-2021 Harley-Davidson FLHXS Street Glide Special Base
2017-2019 Harley-Davidson FLTRU Road Glide Ultra Base
2017-2021 Harley-Davidson FLTRX Road Glide Base
2017-2021 Harley-Davidson FLTRXS Road Glide Special Base
2018-2020 Harley-Davidson FXBRS Breakout 114 Base
2018-2021 Harley-Davidson FXFBS Fat Bob 114 Base

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