Cometic, EST rocker cover gasket kit. Evo XL - 86-90 Evo XL Sportster (NU) 991463 which is 50% harder &

which is 50% harder & stronger than the Factory cam support plate

29mm diameter

Fits: > 74-22 H-D with single or dual throttle cables (excl

Black painted stock replacement aluminum cylinder with cast iron liner

Cometic, EST rocker cover gasket kit. Evo XL - 86-90 Evo XL Sportster (NU) 991463 which is 50% harder &Kit for two cylinders. EST's embossed stainless steel metal substrate is coated with a proprietary high temperature rubber material that virtually eliminates leakage when joining two metal surfaces. Rocker cover gaskets are . 020" thick and have . 005" of high temperature rubber on both sides. They will not weep, extrude, tear or become brittle over time. OEM replacement reference 17030 89.