{"product_id":"s-s-cycle-chrome-die-cast-1984-99-bt-1986-2003-xl-rocker-box-kit","title":"S\u0026S Cycle 99-06 BT 3.927in Standard Bore 97in Big Bore Forged Piston Set","description":"These big bore pistons work with the stock 4\" stroke flywheels to convert any 1999-'06 HD® big twin engine from 88\" to 97\" displacement with 9.7:1 compression with stock heads. Stock cylinders may be bored to accomodate larger pistons, but we recommend S\u0026amp;S 3.927\" bore cylinders which feature high strength alloyed cast iron liners. Pistons are compatible with stock rods with tapered wristpin ends. S\u0026amp;S® 3.927\" bore pistons are machined to such close tolerances that it is not necessary to measure the piston. Just bore cylinders to nominal diameter +\/- 0.0005\" for correct clearance. Additionally, the low friction coating on the piston skirt makes taking measurements very difficult. 3.927\" standard bore.","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":44400900735150,"sku":"SSC106-3688","price":514.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/0714\/9486\/files\/0b02fdddf9310f548285c30c61945a27.png?v=1702471006","url":"https:\/\/purauto.com\/products\/s-s-cycle-chrome-die-cast-1984-99-bt-1986-2003-xl-rocker-box-kit","provider":"PurAuto","version":"1.0","type":"link"}