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for Evolution Big Twin Engines
Gaskets for Top End
Cometic Gaskets for Cylinder Head: Evolution 3-1/2 ” Bore
Cometic Gaskets for Cylinder Head: Evolution 3-1/2 ” Bore
Select variant:
0.040” thick
0.030” thick
Price and stock:
Item №
58-241
net price
$63.93
Available
8
Ready for immediate delivery from our Würzburg, Germany warehouse
* Tax free shipping.
- Gasket »MLS« by Cometic Gasket
- for Cylinder head
- fits Sportster 1200 cc 1988-2020, Big Twin 1984-1998 (Softail →1999)
- steel / fluoroelastomer
- nominal bore: 3-1/2 ”
- 0.040” thick
- replaces Harley-Davidson part number HD 16770-84, and 16773-85
- gross weight: 114 g
Cometic MLS Gaskets
Head gasket with Multi-Layer-Steel technology, i.e. 2 thin FKM-coated spring steel layers enclose an inner steel layer.
Thin Head Gaskets
An easy way to increase compression ratio a tad is to install thinnner head gaskets. A snappier exhaust note and a more efficient combustion can be expected.
Example: using a .030" head gasket in lieu of a .045" will increase compression by approx. 0.25 points. So if your CR with a .045" head gasket is 9.6, the static CR will increase to 9.85 with a .030" head gasket. Valve to piston clearance must be checked where appropriate.
Have any questions?
Our service team will be glad to help out: Mondays - Thursdays 08:00-17:00 CET, Fridays 08:00-16:00 CET, Phone: +49 / 931 250 61 16, eMail: service@wwag.com