{"product_id":"s-s-cycle-900-4320a-roller-rocker-arm-set-for-1966-84-hd®-big-twins","title":"S\u0026S Cycle 900-4320A Roller Rocker Arm Set For 1966-'84 HD® Big Twins","description":"\u003ch1\u003eS\u0026amp;S Cycle 900-4320A\u003c\/h1\u003e 1966-'84 big twins SH-Series engines. S\u0026amp;S\u003csup\u003e®\u003c\/sup\u003e rocker arms for shovelhead engines are machined from 8620 steel forgings and heat treated for maximum strength. The forgings are designed to eliminate stress points and provide the strongest, most durable rocker arm possible. These roller rocker arms also feature the exclusive .750\" long S\u0026amp;S\u003csup\u003e®\u003c\/sup\u003e rocker arm bushings, with 50% more load bearing surface than stock .500\" bushings. An oil passage from the pushrod cup of the rocker arm to the inside of the rocker arm body allows top-end oiling through the pushrods when used in conjunction with S\u0026amp;S\u003csup\u003e®\u003c\/sup\u003e billet tappet guides and S\u0026amp;S\u003csup\u003e®\u003c\/sup\u003e Quickee pushrods. Oiling can also be done through the stock 1966-'84 external oiling system. Nominal rocker ratio of 1.5:1. The roller tip reduces valve tip wear and side loading of the valve stem in high lift applications. S\u0026amp;S\u003csup\u003e®\u003c\/sup\u003e roller rocker arms are compatible with S\u0026amp;S\u003csup\u003e®\u003c\/sup\u003e billet and stock rocker boxes. Some clearancing may be required when using stock rocker boxes. \u003ch3\u003eFITMENT DISCLAIMER\u003c\/h3\u003e\n\u003cp\u003eFitment information is provided as a general reference only and is not guaranteed for any motorcycle, whether stock or modified. Compatibility may vary by year, model, and individual configuration.\u003c\/p\u003e\n\n\u003cp\u003eCustomers are responsible for verifying fitment prior to purchase. House of Harley-Davidson assumes no liability for purchases made based on incorrect or unverified fitment information.\u003c\/p\u003e\n\n\u003cp\u003ePlease contact our Parts Department with any questions before ordering at \u003ca href=\"tel:4142822211\"\u003e414-282-2211\u003c\/a\u003e\u003c\/p\u003e","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":53260518064435,"sku":"SS+900-4320A","price":649.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0720\/6764\/5747\/files\/ss-900-4320a-ss-cycle-900-4320a-roller-rocker-arm-set-for-1966-84-hd-big-twins-2.png?v=1776707213","url":"https:\/\/houseofharley.com\/es\/products\/s-s-cycle-900-4320a-roller-rocker-arm-set-for-1966-84-hd%c2%ae-big-twins","provider":"House of Harley®","version":"1.0","type":"link"}