{"product_id":"grimmspeed-02-21-subaru-wrx-sti-4-piston-brake-caliper-kit-gray-for-340mm-rotor","title":"GrimmSpeed 02-21 Subaru WRX\/STI 4-Piston Brake Caliper Kit - Gray (For 340mm Rotor) - GRM.1170.1.GRY","description":"\u003cdiv class=\"manufacturer-description\"\u003e\n  \u003cp\u003eEach kit is application-specific, pairing our forged aluminum calipers with the correct rotor and bracket configuration for your setup. Calipers are available in your choice of Red or Gunmetal Gray anodized finishes , both designed to withstand heat and resist corrosion while delivering a clean, motorsports-ready look. From street builds to track cars, this is the braking confidence your Subaru deserves. Forged 6061-T6 Aluminum Caliper Body – 2-piece design, hard anodized for strength and corrosion resistance Dual Piston Setup – 44mm primary and 41mm secondary pistons provide even pad pressure and reduced taper Heat-Managed Pistons – Type 3 hard anodized and vented for superior thermal performance Lightweight Design – Approximately 9.9 lbs per corner with bracket and hardware Pad Compatibility – FMSI D1001 or D968 (varies by application) Rotor Compatibility – Works with commonly available Subaru OEM and STI rotors No Brake Lines Required – Compatible with factory lines (new lines may be recommended depending on vehicle) (2) GrimmSpeed 4-Piston Brake Calipers (choose Red or Gunmetal) (2) Vehicle-Specific Billet 4140 Steel Caliper Brackets Full Hardware Kit: Bridge bolts Banjo bolts Crush washers Bleeder dust caps Caliper guide pins Security cotter pins Caliper spring bridges + bolts Printable 1:1 Fitment Template Install Instructions 02-21 WRX 04-21 STI Rotor Size: 340mm Pad Type: F40 (FMSI D968) Designed for use with OEM-style hubs and rotors — no knuckle swaps or custom adapters required. * OEM Subaru 340mm Rotor (5x114.3 Cars Only) Part No.-26300VA000\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eForged 6061-T6 Aluminum Caliper Body – 2-piece design, hard anodized for strength and corrosion resistance\u003c\/li\u003e\n    \u003cli\u003eDual Piston Setup – 44mm primary and 41mm secondary pistons provide even pad pressure and reduced taper\u003c\/li\u003e\n    \u003cli\u003eHeat-Managed Pistons – Type 3 hard anodized and vented for superior thermal performance\u003c\/li\u003e\n    \u003cli\u003eLightweight Design – Approximately 9.9 lbs per corner with bracket and hardware\u003c\/li\u003e\n    \u003cli\u003ePad Compatibility – FMSI D1001 or D968 (varies by application)\u003c\/li\u003e\n    \u003cli\u003eRotor Compatibility – Works with commonly available Subaru OEM and STI rotors\u003c\/li\u003e\n    \u003cli\u003eNo Brake Lines Required – Compatible with factory lines (new lines may be recommended depending on vehicle)\u003c\/li\u003e\n    \u003cli\u003e(2) GrimmSpeed 4-Piston Brake Calipers (choose Red or Gunmetal)\u003c\/li\u003e\n    \u003cli\u003e(2) Vehicle-Specific Billet 4140 Steel Caliper Brackets\u003c\/li\u003e\n    \u003cli\u003eFull Hardware Kit: Bridge bolts\u003c\/li\u003e\n    \u003cli\u003eBanjo bolts\u003c\/li\u003e\n    \u003cli\u003eCrush washers\u003c\/li\u003e\n    \u003cli\u003eBleeder dust caps\u003c\/li\u003e\n    \u003cli\u003eCaliper guide pins\u003c\/li\u003e\n    \u003cli\u003eSecurity cotter pins\u003c\/li\u003e\n    \u003cli\u003eCaliper spring bridges + bolts\u003c\/li\u003e\n    \u003cli\u003ePrintable 1:1 Fitment Template\u003c\/li\u003e\n    \u003cli\u003eInstall Instructions\u003c\/li\u003e\n    \u003cli\u003eRotor Size: 340mm\u003c\/li\u003e\n    \u003cli\u003ePad Type: F40 (FMSI D968)\u003c\/li\u003e\n    \u003cli\u003eDesigned for use with OEM-style hubs and rotors — no knuckle swaps or custom adapters required.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"GrimmSpeed","offers":[{"title":"Default Title","offer_id":53573527830891,"sku":"GRMGRM.1170.1.GRY","price":2251.2,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/9690\/4998\/files\/GRM.113.1.0-4.jpg?v=1787752472","url":"https:\/\/www.raptorracing.ca\/products\/grimmspeed-02-21-subaru-wrx-sti-4-piston-brake-caliper-kit-gray-for-340mm-rotor","provider":"Raptor Racing","version":"1.0","type":"link"}