Upgrade your ride with the COMETIC GASKET HEAD 4.125″ .036″ MLX TWIN CAM 99-17 from Knobtown Cycle, Kansas City’s premier motorcycle parts destination.
Product Description
GASKET HEAD 4.125" .036" MLX TWIN CAM 99-17
- Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle
- 4.125" big bore is a popular big bore for performance-oriented Harleys, as it builds serious cylinder pressure and can use the extra sealing properties of the MLX head gaskets
- Center layer is folded over on top of itself which simulates an O-ringed head and adds a targeted torque load right at the combustion seal where you need it
- MLX head gaskets are essential for all Twin Cam applications using a Turbo, high compression, nitrous or any power adder modifications
- Proprietary high-temperature coatings along with embossments provide a micro seal for fluids against the head and block surface
- Require no special machining and are installed like a regular MLS head gasket
- Sold in pairs for popular bores and thicknesses
- Made in the USA
Part Locations
| Location |
Available |
| Wisconsin (WI) |
0 |
| New York (NY) |
1 |
| Texas (TX) |
0 |
| Nevada (NV) |
0 |
| North Carolina (NC) |
1 |
| National Total |
2 |
Stock levels last updated: December 22, 2025 8:52 PM
Professional Installation Available
Knobtown Cycle offers professional installation services. Contact us via a service request to learn more.
Thank you for Shopping at Knobtown Cycle!
When you shop with us, you’re not just buying motorcycle parts — you’re supporting a small, family-run business rooted right here in the heartland of America. Every order helps us keep riders on the road and fuels our passion for serving the motorcycle community.
From all of us at Knobtown Cycle, thank you for choosing local and riding with us.
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