{"product_id":"arp-head-studs-part-no-201-4306","title":"ARP cylinder head studs for BMW S1000RR (motorcycle) - 201-4306","description":"\u003cp\u003eARP 201-4306 cylinder head studs are made for the BMW S1000RR (Bike). Replacing the stock bolts with studs helps keep the head gasket sealed when the engine is running with higher turbo pressure or higher compression.\u003c\/p\u003e\u003cp\u003eThey are manufactured from Custom Age 625+, a superalloy with a typical tensile strength of 260,000 to 280,000 psi, which is highly resistant to fatigue and corrosion. Each stud is centerless-ground after heat treatment to ensure it is perfectly concentric, so that the gasket and cylinder head are aligned during installation, and the threads are rolled after heat treatment, which ARP states increases their fatigue strength by twenty times.\u003c\/p\u003e\u003cp\u003eFollow the torque and tightening sequence in the ARP instructions, which are calculated for their assembly lubricant; if engine oil is used, the actual torque changes. Not sure about your engine version? Send us the code and we will confirm the part number.\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":53893807178062,"sku":"ARP-201-4306","price":467.86,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0816\/7329\/0062\/files\/201-4306.jpg?v=1790662598","url":"https:\/\/driftandgrip.com\/en\/products\/arp-head-studs-part-no-201-4306","provider":"Drift \u0026 Grip","version":"1.0","type":"link"}