{"product_id":"athena-3-5-8-cylinder-base-gasket-set-fr-rr-020-rcs-84-99-evo-big-twin-86-22-xl-sportster-with-3-5-8-big-bore-cylinders-nu-1","title":"Athena, 3-5\/8\" cylinder base gasket set. FR\/RR .020\" RCS — 84-99 Evo Big Twin; 86-22 XL Sportster. With 3-5\/8\" big bore cylinders (NU)","description":"S410195006013\/1U3-5\/8\" big bore. Front \u0026amp; rear gasket set. Type ''A'' gasket. .020\" thick RCS (Rubber Coated Steel). Gasket with an embossed steel core with a .001\" thick coating of heat resistant nitrile rubber on both sides. OEM replacement reference none. Note: Type A'' gasket explained: Type A'' was introduced on the 1984 Evolution Big Twin models; and can be used on all of the 84-99 1340cc Evo models and will follow the contours of the cylinder base perfectly. They will fit 86-22 Evo XL; but stick out at the cylinder base. This can be a problem with silicone beaded base gaskets. Both type ''A'' and type ''B'' have identical inner bore diameter; oil hole and stud hole locations. Gaskets for front \u0026amp; rear cylinder are identical. Only difference between the ''A'' \u0026amp; ''B'' gaskets is the outside perimeter.\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 84-99 Evo Big Twin; 86-22 XL Sportster. With 3-5\/8\" big bore cylinders (NU)\u003c\/p\u003e","brand":"Athena","offers":[{"title":"Default Title","offer_id":54237076750663,"sku":"722976","price":16.58,"currency_code":"EUR","in_stock":false}],"url":"https:\/\/www.chopperessentials.com\/products\/athena-3-5-8-cylinder-base-gasket-set-fr-rr-020-rcs-84-99-evo-big-twin-86-22-xl-sportster-with-3-5-8-big-bore-cylinders-nu-1","provider":"Chopper Essentials Co.","version":"1.0","type":"link"}