{"product_id":"shaft-mounted-1-1-1-ratio-rocker-arms-for-gx390-420-ohv-and-460cc","title":"Shaft Mounted 1.1:1 Ratio Rocker Arms for GX390, 420 OHV, and 460cc","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"background-color: rgb(255, 255, 0);\"\u003e\u003ca href=\"https:\/\/gokartsusa.biz\/collections\/rocker-arms\" title=\"Racing Rocker Arms for Honda GX Series Engones\" style=\"background-color: rgb(255, 255, 0);\"\u003eRocker Arms\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eShaft Mounted 1.1:1 Ratio Rocker Arms for GX390, 420 OHV, and 460cc\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThese are the famous \"Champion\" HD shaft rockers for GX390 and 420 OHV engines. They are arguably the best bang for your buck when it comes to valve train stability.\u003c\/li\u003e\n\u003cli\u003eA shaft rocker eliminates the need for a guide plate and prevents the rocker arms from walking side to side. Further, they have considerably more rigidity than stud rockers, so they rarely need adjustment once set.\u003c\/li\u003e\n\u003cli\u003eStuds and nuts included (Studs may require tools to install - too tight to turn by hand.)\u003c\/li\u003e\n\u003cli\u003eFits GX390 and 420 OHV engines. Will not fit GX270s.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003e*Note:\u003cspan\u003e \u003c\/span\u003e\u003c\/b\u003e\u003cspan\u003eThese rockers are not a set-and-forget upgrade. They require some knowledge of engines and valvetrain geometry to work properly. We cannot provide installation support due to the immense amount of variables between different makes of engines!\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eAs with any other aftermarket part, additional modifications may be necessary to fully utilize this component (e.g. longer pushrods, clearance of valve cover). Do not assume this is a drop-in part or that you don't have to check for fit or proper operation.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eRockers are designed as 1.1 to 1, but due to manufacturing and stamping tolerance, they may vary some.\u003c\/span\u003e\u003cbr\u003e\u003cb\u003e\u003cbr\u003eDoes not fit hemi style cylinder heads. Verify that you do not have a hemi head before purchasing as we do not allow returns on this item.*\u003c\/b\u003e\u003c\/p\u003e","brand":"GoKarts USA®","offers":[{"title":"Default Title","offer_id":43060104691771,"sku":"NR-CHAMP390","price":25.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0589\/5159\/8139\/files\/CHAMP390-2.jpg?v=1764893712","url":"https:\/\/gtcracing.com\/products\/shaft-mounted-1-1-1-ratio-rocker-arms-for-gx390-420-ohv-and-460cc","provider":"GTC Racing","version":"1.0","type":"link"}