{"product_id":"mini-moke-a-series-roller-tip-rocker-assembly-1-5-ratio-for-1275-med-2151-rr","title":"MINI \u0026 MOKE (A SERIES) MED 1.5 ROLLER ROCKER SET [MED-2151-RR]","description":"\u003cp\u003eMED roller-tip rockers give more valve lift than the standard rockers, with an enlarged rocker shaft and adjusters for extra strength. \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCylindrically-ground rollers in the arm tips \u003c\/span\u003ereduce side-loading of the valve stems to improve valve and guide longevity, while also reducing friction.   \u003c\/p\u003e\n\u003cp\u003eA host of unique design features equate to an incredibly high quality 1.5:1 roller-tip rocker set, surpassed only by the MED LDX rockers for full competition engines. They're trusted by leading engine builders worldwide for all performance A-Series, mild road to full race.  \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDesign features:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUprated 17mm diameter rocker shaft for greater surface contact between the shaft and rocker arms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"scayt-misspell\" data-scaytid=\"5\" data-scayt_word=\"CNC\"\u003eCNC-\u003c\/span\u003emachined heavy-duty 7075 aluminium rocker arms for extremely precise valve lift across the head.\u003c\/li\u003e\n\u003cli\u003eHigh quality steel rocker posts, chemically black coated.\u003c\/li\u003e\n\u003cli\u003eEnlarged 3\/8-inch\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"scayt-misspell\" data-scaytid=\"9\" data-scayt_word=\"UNF\"\u003eUNF\u003c\/span\u003e rocker adjusters with lightweight aerospace 'K' lock nuts.\u003c\/li\u003e\n\u003cli\u003e3\/16-inch hex socket adjustment in place of the regular flat-blade screwdriver slot.  \u003c\/li\u003e\n\u003cli\u003eFully assembled with alloy rocker spacers, end washers and split pins.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cdiv class=\"text--block\"\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits of the MED roller-tip rockers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStandard rockers rarely give consistent valve lift across the head, even when new. After many years of use and wear, lift is likely to be even more inconsistent, so while 1.28:1 is generally given as the standard rocker ratio, a quick check of the valve lift will usually show otherwise. Optimising every aspect of the engine will enhance performance, and the 1.5 rockers will give more lift than standard.\u003c\/p\u003e\n\u003cp\u003eRoller tips reduce side loading of the valve stems, in turn reducing friction whilst also improving valve and guide longevity.\u003c\/p\u003e\n\u003cp\u003eAdd to this extra stiffness across the shaft, trouble-free tappet adjustment from enlarged adjusters, and you have an excellent performance upgrade. \u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eIntended fitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe MED roller-tip rockers are designed for the 1275 A-Series cylinder head, but will also suit the 1071 and 970 Cooper S engines, which share the same valve stem spacing. We have heard of customers experimenting with arm location and spacing to suit small-bore heads, but it's not something we would recommend. Of course if you are running a 1275 head on a small-bore block then these will fit no problems.\u003c\/p\u003e\n\u003cp\u003eIf you are running a more exotic race head with offset exhaust valves, you will need to upgrade to the LDX rockers, which are available in a special offset design.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003e1.3:1 vs 1.5:1 rockers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAll MED fast road and race camshafts are optimised to work best with 1.5:1 rockers, however there is still strong demand for 1.3:1 rockers. If you're already satisfied with the performance of your engine, the 1.3 rockers will retain much of the same powerband but with all of the benefits listed above. For those in search of a bit more power, ultimately 1.5 rockers will achieve this.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Minisport.com.au","offers":[{"title":"Default Title","offer_id":51363810214198,"sku":"MED-2151-RR","price":795.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0727\/3322\/9366\/files\/RockersNew2_1080x1080_4005bc9c-e263-4c9c-8915-8e85892730f5.webp?v=1733355565","url":"https:\/\/minisport.com.au\/products\/mini-moke-a-series-roller-tip-rocker-assembly-1-5-ratio-for-1275-med-2151-rr","provider":"Minisport","version":"1.0","type":"link"}