{"product_id":"mx5-na-nb-arp-high-boost-head-studs-new-aftermarket","title":"MX5 NA\/NB ARP High Boost Head Studs (New) (Aftermarket)","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eMX5 NA\/NB ARP Head Studs (New) (Aftermarket)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eARP High Boost Head Studs are an uprated head fastening solution for Mazda MX-5 NA and NB engines, suited to high-end B6 and BP performance builds. Originally designed for Chrysler 2.2L 4-cylinder engines, this M11 12-point undercut head stud kit is also compatible with the MX-5 B6 and BP platforms. As a result, it’s become something of a community secret over the years.\u003c\/p\u003e\n\u003cp\u003eConstructed from ARP’s proprietary ARP2000 material, the studs use a larger .409 shank diameter than MX-5-specific head stud kits to improve head stability at high boost pressures. They allow for torque values above the OEM specification, with 75 ft\/lbs recommended and 60–80 ft\/lbs used successfully in prior builds.\u003c\/p\u003e\n\u003cp\u003eThe kit fits OEM BP and B6 blocks with no modifications required. It is recommended for forced induction builds running over 20 psi boost, has been tested to 32 psi, and has been used on MX-5 builds producing in excess of 450 bhp.\u003c\/p\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFits Mazda MX-5 NA and NB B6 and BP engines\u003c\/li\u003e\n\u003cli\u003eM11 12-point undercut head stud kit\u003c\/li\u003e\n\u003cli\u003eARP2000 material construction\u003c\/li\u003e\n\u003cli\u003e.409 larger shank diameter\u003c\/li\u003e\n\u003cli\u003e75 ft\/lbs recommended torque\u003c\/li\u003e\n\u003cli\u003eSuitable for builds over 20 psi boost\u003c\/li\u003e\n\u003cli\u003eTested to 32 psi\u003c\/li\u003e\n\u003cli\u003eNo block modifications required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eKit Contents\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e10 head studs\u003c\/li\u003e\n\u003cli\u003e10 washers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eTo Suit: Mazda MX5 NA\/NB 1.6L \u0026amp; 1.8L 1989-2005\u003c\/span\u003e\u003c\/p\u003e","brand":"149","offers":[{"title":"Default Title","offer_id":68009505325207,"sku":"241-4701_TBC","price":449.99,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0487\/4354\/7031\/files\/MX5-NA_NB_ARP_Head_Studs_New_Aftermarket.jpg?v=1782278957","url":"https:\/\/miataparts.co.nz\/products\/mx5-na-nb-arp-high-boost-head-studs-new-aftermarket","provider":"Miata Parts NZ","version":"1.0","type":"link"}