0.030in. Head Gaskets. Fits Big Twin 1984-1999 & 1200cc Sportster 1988-2021 with 3.50in. Bore.

* Harley-Davidson Evolution Big Twin 3.500" MLS Head Gaskets.

* Fits Big Twin 80ci '1984-1999 & XL1200cc 1988-2021

* MLS 0.030" thick Head Gaskets (thinner than OEM)

* Provides an additional increase in compression.

** Remember to check your clearances.

* Replaces OEM # 16770-84

Warning : Use of these head gaskets without proper clearance checks can lead to catastrophic engine failure

Fitment is listed in the product title above. Not sure it suits your bike? Ask our workshop — or book it in and we'll fit it for you.