{"title":"RSS — Brake Rotors \/ Steel","description":"\u003cp\u003eBrake Rotors \/ Steel supplied by Road Sport Supply. Check each product for exact model, trim and equipment requirements.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"\/collections\/rss-road-sport-supply\"\u003eBrowse all RSS applications\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"girodisc-987s-w-pccbs-rear-350mm-2-piece-iron-rotor-conversion-set-a2-049","title":"Girodisc 987S w\/PCCB's - Rear 350mm 2-piece Iron Rotor Conversion Set A2-049","description":"\u003cp\u003eGirodisc A2-049: rear 350 mm iron-rotor conversion pair for Porsche 987 Cayman\/Boxster originally fitted with PCCB. Replaces the original discs.\u003c\/p\u003e\u003cp\u003eTwo-piece construction uses a US-sourced 6061-T6 aluminum hat and US-made cast-iron ring with curved cooling vanes. Ten plated alloy-steel drive pins carry braking loads while allowing axial\/radial float. Class 12.9 screws, hardened washers and anti-rattle spring washers retain the assembly. Floating action accommodates heat expansion and pad centering; the iron ring can be replaced separately. Sold as a pair.\u003c\/p\u003e\u003cp\u003eSupplier part number: A2-049. Vendor: RSS (Road Sport Supply).\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eListed in RSS's 987 category. Other chassis are not confirmed by this product's specific description; match any required RSS hardware and model details before ordering.\u003c\/p\u003e","brand":"RSS","offers":[{"title":"Default Title","offer_id":56205681230146,"sku":"A2-049","price":1200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/4930\/9506\/files\/rss-A2-049-34.jpg?v=1789759147"},{"product_id":"girodisc-987s-w-pccb-front-350mm-2-piece-iron-rotor-conversion-set-a1-032","title":"Girodisc 987S\/w PCCB Front 350mm 2-piece Iron Rotor Conversion Set - A1-032","description":"\u003cp\u003eGirodisc A1-032: front 350 mm iron-rotor conversion pair for 987 with factory PCCB. Direct fit with OE calipers; RSS states no modifications are needed and factory brake bias\/ABS operation are retained.\u003c\/p\u003e\u003cp\u003eTwo-piece construction uses a US-sourced 6061-T6 aluminum hat and US-made cast-iron ring with curved cooling vanes. Ten plated alloy-steel drive pins carry braking loads while allowing axial\/radial float. Class 12.9 screws, hardened washers and anti-rattle spring washers retain the assembly. Floating action accommodates heat expansion and pad centering; the iron ring can be replaced separately. Sold as a pair.\u003c\/p\u003e\u003cp\u003eSupplier part number: A1-032. Vendor: RSS (Road Sport Supply).\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eListed in RSS's 987 category. Other chassis are not confirmed by this product's specific description; match any required RSS hardware and model details before ordering.\u003c\/p\u003e","brand":"RSS","offers":[{"title":"Default Title","offer_id":56205681328450,"sku":"A1-032","price":1200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/4930\/9506\/files\/rss-A2-049-34.jpg?v=1789759147"},{"product_id":"girodisc-987-boxster-s-cayman-s-rear-325mm-2-piece-rotor-set-a2-031","title":"Girodisc - 987 Boxster S\/Cayman S - Rear 325mm 2-piece Rotor Set A2-031","description":"\u003cp\u003eGirodisc A2-031: rear 325 mm rotor pair for 987 Boxster S\/Cayman S. Increases diameter from the original 298 mm and uses supplied caliper spacers for additional braking leverage and cooling capacity.\u003c\/p\u003e\u003cp\u003eTwo-piece construction uses a US-sourced 6061-T6 aluminum hat and US-made cast-iron ring with curved cooling vanes. Ten plated alloy-steel drive pins carry braking loads while allowing axial\/radial float. Class 12.9 screws, hardened washers and anti-rattle spring washers retain the assembly. Floating action accommodates heat expansion and pad centering; the iron ring can be replaced separately. Sold as a pair.\u003c\/p\u003e\u003cp\u003eSupplier part number: A2-031. Vendor: RSS (Road Sport Supply).\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eListed in RSS's 987 category. Other chassis are not confirmed by this product's specific description; match any required RSS hardware and model details before ordering.\u003c\/p\u003e","brand":"RSS","offers":[{"title":"Default Title","offer_id":56205681918274,"sku":"A2-031","price":1200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/4930\/9506\/files\/rss-A2-031-35.webp?v=1789759164"},{"product_id":"girodisc-987-boxster-s-cayman-s-front-340mm-2-piece-rotor-set-a1-031","title":"Girodisc - 987 Boxster S\/Cayman S - Front 340mm 2-piece Rotor Set A1-031","description":"\u003cp\u003eGirodisc A1-031: front 340 mm rotor pair for 987 Boxster S\/Cayman S. Increases diameter from the original 317 mm, using supplied caliper spacers and longer bolts for additional braking leverage and cooling capacity.\u003c\/p\u003e\u003cp\u003eTwo-piece construction uses a US-sourced 6061-T6 aluminum hat and US-made cast-iron ring with curved cooling vanes. Ten plated alloy-steel drive pins carry braking loads while allowing axial\/radial float. Class 12.9 screws, hardened washers and anti-rattle spring washers retain the assembly. Floating action accommodates heat expansion and pad centering; the iron ring can be replaced separately. Sold as a pair.\u003c\/p\u003e\u003cp\u003eSupplier part number: A1-031. Vendor: RSS (Road Sport Supply).\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eListed in RSS's 987 category. Other chassis are not confirmed by this product's specific description; match any required RSS hardware and model details before ordering.\u003c\/p\u003e","brand":"RSS","offers":[{"title":"Default Title","offer_id":56205682049346,"sku":"A1-031","price":1100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/4930\/9506\/files\/rss-A2-049-34.jpg?v=1789759147"},{"product_id":"girodisc-porsche-992-gt3-front-rotors-a1-272","title":"GiroDisc - Porsche 992 GT3 Front Rotors - (A1-272)","description":"\u003cp\u003eSupplier part number: A1-272. Vendor: RSS (Road Sport Supply).\u003c\/p\u003e\u003cp\u003eGiroDisc - Porsche 992 GT3 Front Rotors - (A1-272)\u003c\/p\u003e\u003cp\u003eThe Girodisc system is a direct replacement for the OE disc on the 992 GT3 with OEM iron rotors. No modifications are necessary, and it allows the use of unmodified factory pads. The disc will bolt directly to the car and work with factory calipers.\u003c\/p\u003e\u003cp\u003eThe central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in-house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.\u003c\/p\u003e\u003cp\u003eThe rotor and hat have a floating mount system, which utilizes 12 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.\u003c\/p\u003e\u003cp\u003eOnce the Girodisc system is in place, simply replace the cast iron rotor when needed.\u003c\/p\u003e\u003cp\u003eSold\/priced per pair.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003ePorsche 992 GT3 with factory iron brakes; front rotor pair, factory calipers and pads.\u003c\/p\u003e","brand":"RSS","offers":[{"title":"Default Title","offer_id":56211820052802,"sku":"A1-272","price":1800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/4930\/9506\/files\/rss-rest-1.jpg?v=1789871381"},{"product_id":"girodisc-992-gt3-gt4-rs-rear-rotors-a2-272","title":"GiroDisc - 992 GT3, GT4 RS Rear Rotors - (A2-272)","description":"\u003cp\u003eSupplier part number: A2-272. Vendor: RSS (Road Sport Supply).\u003c\/p\u003e\u003cp\u003eGiroDisc - 992 GT3, GT4 RS Rear Rotors - (A2-272)\u003c\/p\u003e\u003cp\u003eThe Girodisc system is a direct replacement for the OE disc on the 992 GT3\/GT4 RS with OEM iron rotors. No modifications are necessary, and it allows the use of unmodified factory pads. The disc will bolt directly to the car and work with factory calipers.\u003c\/p\u003e\u003cp\u003eThe central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in-house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.\u003c\/p\u003e\u003cp\u003eThe rotor and hat have a floating mount system, which utilizes 12 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.\u003c\/p\u003e\u003cp\u003eOnce the Girodisc system is in place, simply replace the cast iron rotor when needed.\u003c\/p\u003e\u003cp\u003eSold\/priced per pair.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003ePorsche 992 GT3 and 718 Cayman GT4 RS with factory iron brakes; rear rotor pair.\u003c\/p\u003e","brand":"RSS","offers":[{"title":"Default Title","offer_id":56211820577090,"sku":"A2-272","price":1650.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/4930\/9506\/files\/rss-rest-1.jpg?v=1789871381"},{"product_id":"girodisc-991-gt3-w-oem-iron-rotors-front-380mm-2-piece-rotor-set-a1-146","title":"Girodisc 991 GT3 w\/OEM Iron Rotors - Front 380mm 2-piece Rotor Set A1-146","description":"\u003cp\u003eSupplier part number: A1-146. Vendor: RSS (Road Sport Supply).\u003c\/p\u003e\u003cp\u003eGirodisc Front 380mm 2-piece Rotor for Porsche 991 GT3 w\/OEM Iron Rotors\u003c\/p\u003e\u003cp\u003ePart Number: A1-146\u003c\/p\u003e\u003cp\u003eThe Girodisc system is a direct replacement for the OE disc on the 991 GT3 and GT3 RS with OEM iron rotors. No modifications are necessary, allows use of factory unmodified pads unlike most aftermarket solutions for this application. The disc will bolt directly to the car and work with OE calipers perfectly. By upgrading your brakes with lightweight high performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency.\u003c\/p\u003e\u003cp\u003eThe central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.\u003c\/p\u003e\u003cp\u003eThe rotor and hat have a floating mount system, which utilizes 12 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.\u003c\/p\u003e\u003cp\u003eOnce the Girodisc system is in place, simply replace the cast iron rotor when needed. Center lock drive pin set - enough for two rotors [+$200.00]\u003c\/p\u003e\u003cp\u003eSold\/priced per pair.\u003c\/p\u003e\u003cp\u003eOptional accessories: Center-lock drive pins (+$200.00). Select the required configuration.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFront rotor pair for Porsche 991 GT3\/RS with OEM iron brakes. Supplier mentions optional center-lock drive pins.\u003c\/p\u003e","brand":"RSS","offers":[{"title":"Standard \/ no extras","offer_id":56211832897858,"sku":"A1-146","price":1600.0,"currency_code":"USD","in_stock":true},{"title":"Center-lock drive pins","offer_id":56211832930626,"sku":"A1-146+CENTER-PINS","price":1800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/4930\/9506\/files\/rss-rest-51.webp?v=1789871798"},{"product_id":"girodisc-991-1-s-4s-gts-front-rotor-set-350mm","title":"Girodisc - 991.1 S, 4S, GTS Front Rotor Set - 350mm","description":"\u003cp\u003eSupplier part number: A1-122. Vendor: RSS (Road Sport Supply).\u003c\/p\u003e\u003cp\u003eThe Girodisc system is a direct replacement for the OE disc with the addition of our provided caliper spacers. Our rotor is slightly larger than the OEM rotor at 350mm versus 340mm providing greater braking force and cooling capacity. The Girodisc front rotors are approx 21.0 lbs vs. 24.4 lbs. for the stock units. This reduction in rotational and unsprung weight allows for quicker acceleration and suspension response.\u003c\/p\u003e\u003cp\u003eThe central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.\u003c\/p\u003e\u003cp\u003eThe rotor and hat have a floating mount system, which utilizes 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.\u003c\/p\u003e\u003cp\u003eOnce the Girodisc system is in place, simply replace the cast iron rotor when needed.\u003c\/p\u003e\u003cp\u003eSold\/priced in pairs.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eGirodisc - 991.1 S, 4S, GTS Front Rotor Set - 350mm. Check the exact axle, trim and equipment requirements in the supplier description.\u003c\/p\u003e","brand":"RSS","offers":[{"title":"Default Title","offer_id":56211839516994,"sku":"A1-122","price":1275.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/4930\/9506\/files\/rss-rest-109.webp?v=1789872381"},{"product_id":"girodisc-981-bosxter-cayman-base-front-340mm-2-piece-rotor-set-a1-035","title":"Girodisc 981 Bosxter\/Cayman (Base) - Front 340mm 2-piece Rotor Set A1-035","description":"\u003cp\u003eSupplier part number: A1-035. Vendor: RSS (Road Sport Supply).\u003c\/p\u003e\u003cp\u003eGirodisc Front 340mm 2-piece Rotor Upgrade for 981 Porsche Bosxter\/Cayman Base Model\u003c\/p\u003e\u003cp\u003ePart Number: A1-035\u003c\/p\u003e\u003cp\u003eThe Girodisc system is a direct replacement for the OE disc with the addition of our provided caliper spacers. Our rotor is slightly larger than the OEM rotor at 340mm versus 330mm providing greater braking force and cooling capacity.\u003c\/p\u003e\u003cp\u003eThe central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.\u003c\/p\u003e\u003cp\u003eThe rotor and hat have a floating mount system, which utilizes 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by grade classs 12.9 screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.\u003c\/p\u003e\u003cp\u003eOnce the Girodisc system is in place, simply replace the cast iron rotor when needed.\u003c\/p\u003e\u003cp\u003eSold\/priced in pairs\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003ePorsche 981 base Boxster\/Cayman; front 340mm rotor pair with supplied caliper spacers.\u003c\/p\u003e","brand":"RSS","offers":[{"title":"Default Title","offer_id":56211844694338,"sku":"A1-035","price":1100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/4930\/9506\/files\/rss-A2-049-34.jpg?v=1789759147"},{"product_id":"girodisc-981-bosxter-s-cayman-s-rear-325mm-2-piece-rotor-set-a2-035","title":"Girodisc 981 Bosxter S\/Cayman S - Rear 325mm 2-piece Rotor Set A2-035","description":"\u003cp\u003eSupplier part number: A2-035. Vendor: RSS (Road Sport Supply).\u003c\/p\u003e\u003cp\u003eGirodisc Rear 325mm 2-piece Rotor Upgrade for 981 Porsche Bosxter S\/Cayman S\u003c\/p\u003e\u003cp\u003ePart Number: A2-035\u003c\/p\u003e\u003cp\u003eThe Girodisc system is a direct replacement for the OE disc with the addition of our provided caliper spacers. Our rotor is slightly larger than the OEM rotor at 325mm versus 298mm providing greater braking force and cooling capacity.\u003c\/p\u003e\u003cp\u003eThe central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.\u003c\/p\u003e\u003cp\u003eThe rotor and hat have a floating mount system, which utilizes 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by classs 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.\u003c\/p\u003e\u003cp\u003eOnce the Girodisc system is in place, simply replace the cast iron rotor when needed.\u003c\/p\u003e\u003cp\u003eSold\/priced in pairs.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003ePorsche 981 Boxster S\/Cayman S; rear 325mm rotor pair.\u003c\/p\u003e","brand":"RSS","offers":[{"title":"Default Title","offer_id":56211844727106,"sku":"A2-035","price":1150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/4930\/9506\/files\/rss-A2-031-35.webp?v=1789759164"},{"product_id":"girodisc-981-gt4-replacement-ring-set-380x34","title":"Girodisc 981 GT4 Replacement Ring Set 380x34","description":"\u003cp\u003eSupplier part number: D1-066. Vendor: RSS (Road Sport Supply).\u003c\/p\u003e\u003cp\u003e380x34 Replacement Rotor Rings\u003c\/p\u003e\u003cp\u003eSKU: D1-066\u003c\/p\u003e\u003cp\u003eOur replacement rings are sold in pairs and include replacement hardware. The only parts you will reuse are your existing GiroDisc hats.\u003c\/p\u003e\u003cp\u003ePlease note that unless specifically noted, GiroDisc replacement rings are only designed to work with GiroDisc hats . They are not designed to be used with other brands, including hats from cars equipped with 2-piece rotors from the factory.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003ePorsche 981 GT4 with compatible Girodisc hats; 380×34mm replacement rings and hardware sold as a pair. Not for factory or other-brand hats.\u003c\/p\u003e","brand":"RSS","offers":[{"title":"Default Title","offer_id":56211847348546,"sku":"D1-066","price":935.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/4930\/9506\/files\/rss-rest-152.webp?v=1789873059"},{"product_id":"girodisc-718-gt4-rs-front-rotors-a1-291","title":"GiroDisc - 718 GT4 RS Front Rotors - (A1-291)","description":"\u003cp\u003eSupplier part number: A1-291. Vendor: RSS (Road Sport Supply).\u003c\/p\u003e\u003cp\u003eGiroDisc - 718 GT4 RS Front Rotors - (A1-291)\u003c\/p\u003e\u003cp\u003eThe Girodisc system is a direct replacement for the OE disc on the 718 GT4 RS with OEM iron rotors. No modifications are necessary, and it allows the use of unmodified factory pads. The disc will bolt directly to the car and work with factory calipers.\u003c\/p\u003e\u003cp\u003eThe central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in-house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.\u003c\/p\u003e\u003cp\u003eThe rotor and hat have a floating mount system, which utilizes 12 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.\u003c\/p\u003e\u003cp\u003eOnce the Girodisc system is in place, simply replace the cast iron rotor when need\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003ePorsche 718 Cayman GT4 RS; front rotor pair for compatible factory iron brakes.\u003c\/p\u003e","brand":"RSS","offers":[{"title":"Default Title","offer_id":56211849347394,"sku":"A1-291","price":1850.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/4930\/9506\/files\/rss-rest-175.webp?v=1789873581"},{"product_id":"girodisc-981-boxster-s-cayman-front-350mm-2-piece-rotor-set-a1-153","title":"Girodisc 981 Boxster S\/Cayman - Front 350mm 2-piece Rotor Set A1-153","description":"\u003cp\u003eSupplier part number: A1-153. Vendor: RSS (Road Sport Supply).\u003c\/p\u003e\u003cp\u003eGirodisc Front 350mm 2-piece Rotor Upgrade for 981 Porsche Boxster S\/Cayman S\u003c\/p\u003e\u003cp\u003ePart Number: A1-153\u003c\/p\u003e\u003cp\u003eThe Girodisc system is a direct replacement for the OE disc with the addition of our provided caliper spacers. Our rotor is slightly larger than the OEM rotor at 350mm versus 330mm providing greater braking force and cooling capacity.\u003c\/p\u003e\u003cp\u003eThe central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.\u003c\/p\u003e\u003cp\u003eThe rotor and hat have a floating mount system, which utilizes 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by class 12.9 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.\u003c\/p\u003e\u003cp\u003eOnce the Girodisc system is in place, simply replace the cast iron rotor when needed.\u003c\/p\u003e\u003cp\u003eSold\/priced in pairs\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003ePorsche 981 Boxster S\/Cayman S; front 350mm rotor pair.\u003c\/p\u003e","brand":"RSS","offers":[{"title":"Default Title","offer_id":56211854917954,"sku":"A1-153","price":1250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/4930\/9506\/files\/rss-rest-229.jpg?v=1789874736"}],"url":"https:\/\/levinsonperformance.com\/collections\/rss-brake-rotors-steel.oembed","provider":"Levinson Performance \u0026 Mfg.","version":"1.0","type":"link"}