{"product_id":"specworks-toyota-a90-supra-front-brake-discs-two-piece-replacement-348x36mm-copy","title":"SPECWORKS TOYOTA A90 SUPRA REAR BRAKE DISCS — TWO PIECE REPLACEMENT 345x28mm","description":"\u003cdiv\u003e\n\u003ch1\u003eToyota A90 Supra — Rear Replacement Rotor (345x28mm)\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eTwo-Piece Semi-Floating Rotor | THERMACORE™ Alloy | Aluminum Hat\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEngineered as a direct rear replacement for the Toyota GR Supra A90, our 345x28mm two-piece rotor is built to match the performance of our front setup — delivering balanced braking, consistent heat management, and reduced rotating mass at the rear axle.\u003c\/p\u003e\n\u003cp\u003ePaired with our front 348x36mm rotor, you get a complete brake package engineered to work as a system — front and rear working in harmony under load.\u003c\/p\u003e\n\u003ch2\u003eWhy This Rotor\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eTHERMACORE™ Treated Alloy\u003c\/strong\u003e\u003cbr\u003eOur proprietary THERMACORE™ treatment increases the rotor's resistance to heat soak, thermal cracking, and pad fade under repeated high-load braking. The rear axle sees different thermal cycling than the front — and this treatment keeps the friction ring composed through every stop.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTwo-Piece Semi-Floating Construction\u003c\/strong\u003e\u003cbr\u003eSemi-floating bobbin hardware allows controlled thermal expansion between the friction ring and aluminum hat, reducing stress build-up and warping while maintaining the solid, predictable feel the rear axle needs for stability under trail-braking and load transfer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAluminum Hat Construction\u003c\/strong\u003e\u003cbr\u003eThe rear centre hat is precision-CNC machined from high-strength aerospace-grade aluminum — chosen for its light weight, corrosion resistance, and dimensional stability under repeated heat cycles. Purpose-built to pair with the THERMACORE™ friction ring as a complete engineered assembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReduced Rotating Mass\u003c\/strong\u003e\u003cbr\u003eSignificantly lighter than the OEM cast disc, reducing unsprung and rotational weight at the rear — improving suspension response, reducing strain on drivetrain components, and sharpening overall chassis feel.\u003c\/p\u003e\n\u003ch2\u003eChoose Your Slot Pattern\u003c\/h2\u003e\n\u003cp\u003eThree slot geometries to match your front rotor setup — or mix patterns to suit your driving style.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eJ-Hook\u003c\/strong\u003e — Aggressive and track-focused. Maximum pad bite and gas evacuation for drivers who push hard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurved Slot\u003c\/strong\u003e — Smooth and consistent. Excellent all-round performance with quieter operation for street and light track use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTY\u003c\/strong\u003e — Balanced pattern designed for progressive bite and even pad wear. The all-rounder.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eEngineered as a Complete Assembly\u003c\/h2\u003e\n\u003cp\u003eOur two-piece rotor is built as a fully engineered unit — friction ring, aluminum hat, and floating hardware working together as a system. Every component is matched, machined, and assembled to deliver consistent performance from the first stop to the last.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Toyota GR Supra A90 (Rear)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 345mm x 28mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Two-piece semi-floating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFriction Ring:\u003c\/strong\u003e THERMACORE™ treated high-carbon iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentre Hat:\u003c\/strong\u003e Aerospace-grade aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardware:\u003c\/strong\u003e Semi-floating bobbin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlot Patterns:\u003c\/strong\u003e J-Hook \/ Curved \/ TY\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold As:\u003c\/strong\u003e Pair (left + right)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat's In The Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e2x Rear rotors (left + right)\u003c\/li\u003e\n\u003cli\u003ePre-assembled with semi-floating bobbin hardware\u003c\/li\u003e\n\u003cli\u003eReady to fit — no additional prep required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt For\u003c\/h2\u003e\n\u003cp\u003eTrack days, time attack, spirited street driving, and daily-driven A90 Supras where owners want OEM-plus performance with genuine engineering behind it — front and rear.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEvery rotor. THERMACORE™ treated.\u003cbr\u003eHeat resistant. Fade resistant. Built to last.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SPECWORKS BRAKES","offers":[{"title":"Bronze \/ Curved","offer_id":52777501196568,"sku":null,"price":6903.0,"currency_code":"HKD","in_stock":true},{"title":"Bronze \/ TY","offer_id":52777501229336,"sku":null,"price":6903.0,"currency_code":"HKD","in_stock":true},{"title":"Bronze \/ J Hook","offer_id":52777501262104,"sku":null,"price":6903.0,"currency_code":"HKD","in_stock":true},{"title":"Black \/ Curved","offer_id":52777501294872,"sku":null,"price":6903.0,"currency_code":"HKD","in_stock":true},{"title":"Black \/ TY","offer_id":52777501327640,"sku":null,"price":6903.0,"currency_code":"HKD","in_stock":true},{"title":"Black \/ J Hook","offer_id":52777501360408,"sku":null,"price":6903.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0974\/1326\/7736\/files\/supra_a90.jpg?v=1790515752","url":"https:\/\/shop.specworksbrakes.com\/products\/specworks-toyota-a90-supra-front-brake-discs-two-piece-replacement-348x36mm-copy","provider":"SPECWORKS BRAKES","version":"1.0","type":"link"}