{"product_id":"grimmspeed-4-piston-brake-caliper-kit-red-2002-2021-wrx-2004-2021-sti","title":"GrimmSpeed 4 Piston Brake Caliper Kit Red 2002-2021 WRX \/ 2004-2021 STI","description":"\u003cp data-start=\"352\" data-end=\"614\"\u003eThe stock single-piston caliper found on most Subaru platforms gets the job done — but it wasn’t designed for the kind of aggressive driving, tracking, or build evolution most GrimmSpeed drivers pursue. That’s where our\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"570\" data-end=\"604\"\u003e4-Piston Brake Caliper Kit\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecomes in.\u003c\/p\u003e\n\u003cp data-start=\"616\" data-end=\"969\"\u003ePurpose-built for Subaru performance, this fixed caliper setup brings balanced stopping power, improved heat management, and consistent pedal feel to your favorite chassis. Designed in-house and tested under real-world conditions, the system offers a true performance solution — with no need to chase down used Brembos or deal with custom brackets.\u003c\/p\u003e\n\u003cp data-start=\"971\" data-end=\"1380\"\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\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"1148\" data-end=\"1155\"\u003eRed\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"1159\" data-end=\"1189\"\u003eGunmetal Gray anodized finishes\u003c\/strong\u003e, 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.\u003c\/p\u003e\n\u003ch4 data-start=\"1387\" data-end=\"1410\"\u003e\u003cstrong data-start=\"1394\" data-end=\"1410\"\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul data-start=\"1411\" data-end=\"2092\"\u003e\n\u003cli data-start=\"1411\" data-end=\"1525\"\u003e\n\u003cp data-start=\"1413\" data-end=\"1525\"\u003e\u003cstrong data-start=\"1413\" data-end=\"1453\"\u003eForged 6061-T6 Aluminum Caliper Body\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– 2-piece design, hard anodized for strength and corrosion resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1526\" data-end=\"1637\"\u003e\n\u003cp data-start=\"1528\" data-end=\"1637\"\u003e\u003cstrong data-start=\"1528\" data-end=\"1549\"\u003eDual Piston Setup\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– 44mm primary and 41mm secondary pistons provide even pad pressure and reduced taper\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1638\" data-end=\"1733\"\u003e\n\u003cp data-start=\"1640\" data-end=\"1733\"\u003e\u003cstrong data-start=\"1640\" data-end=\"1664\"\u003eHeat-Managed Pistons\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Type 3 hard anodized and vented for superior thermal performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1734\" data-end=\"1821\"\u003e\n\u003cp data-start=\"1736\" data-end=\"1821\"\u003e\u003cstrong data-start=\"1736\" data-end=\"1758\"\u003eLightweight Design\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Approximately 9.9 lbs per corner with bracket and hardware\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1822\" data-end=\"1892\"\u003e\n\u003cp data-start=\"1824\" data-end=\"1892\"\u003e\u003cstrong data-start=\"1824\" data-end=\"1845\"\u003ePad Compatibility\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– FMSI D1001 or D968 (varies by application)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1893\" data-end=\"1978\"\u003e\n\u003cp data-start=\"1895\" data-end=\"1978\"\u003e\u003cstrong data-start=\"1895\" data-end=\"1918\"\u003eRotor Compatibility\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Works with commonly available Subaru OEM and STI rotors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1979\" data-end=\"2092\"\u003e\n\u003cp data-start=\"1981\" data-end=\"2092\"\u003e\u003cstrong data-start=\"1981\" data-end=\"2008\"\u003eNo Brake Lines Required\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Compatible with factory lines (new lines may be recommended depending on vehicle)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-start=\"2099\" data-end=\"2125\"\u003e\u003cstrong data-start=\"2106\" data-end=\"2125\"\u003eWhat’s Included\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul data-start=\"2126\" data-end=\"2502\"\u003e\n\u003cli data-start=\"2126\" data-end=\"2193\"\u003e\n\u003cp data-start=\"2128\" data-end=\"2193\"\u003e(2) GrimmSpeed 4-Piston Brake Calipers (choose Red or Gunmetal)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2194\" data-end=\"2253\"\u003e\n\u003cp data-start=\"2196\" data-end=\"2253\"\u003e(2) Vehicle-Specific Billet 4140 Steel Caliper Brackets\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2254\" data-end=\"2444\"\u003e\n\u003cp data-start=\"2256\" data-end=\"2274\"\u003eFull Hardware Kit:\u003c\/p\u003e\n\u003cul data-start=\"2277\" data-end=\"2444\"\u003e\n\u003cli data-start=\"2277\" data-end=\"2293\"\u003e\n\u003cp data-start=\"2279\" data-end=\"2293\"\u003eBridge bolts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2296\" data-end=\"2311\"\u003e\n\u003cp data-start=\"2298\" data-end=\"2311\"\u003eBanjo bolts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2314\" data-end=\"2331\"\u003e\n\u003cp data-start=\"2316\" data-end=\"2331\"\u003eCrush washers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2334\" data-end=\"2355\"\u003e\n\u003cp data-start=\"2336\" data-end=\"2355\"\u003eBleeder dust caps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2358\" data-end=\"2380\"\u003e\n\u003cp data-start=\"2360\" data-end=\"2380\"\u003eCaliper guide pins\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2383\" data-end=\"2407\"\u003e\n\u003cp data-start=\"2385\" data-end=\"2407\"\u003eSecurity cotter pins\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2410\" data-end=\"2444\"\u003e\n\u003cp data-start=\"2412\" data-end=\"2444\"\u003eCaliper spring bridges + bolts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2445\" data-end=\"2479\"\u003e\n\u003cp data-start=\"2447\" data-end=\"2479\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0743\/3165\/2402\/files\/WRX_STI_BRZ_326_Rotor_Wheel_Clearance_Template.pdf?v=1753977099\"\u003ePrintable 1:1 Fitment Template\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2480\" data-end=\"2502\"\u003e\n\u003cp data-start=\"2482\" data-end=\"2502\"\u003eInstall Instructions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-start=\"2509\" data-end=\"2527\"\u003e\u003cstrong data-start=\"2516\" data-end=\"2527\"\u003eFitment\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e2002-2021 WRX\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2004-2021 STI\u003c\/strong\u003e \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eRotor \u0026amp; Pad Fitment \u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRotor Size: 326mm\u003c\/li\u003e\n\u003cli\u003ePad Type: F50 (FMSI D1001)\u003c\/li\u003e\n\u003cli\u003eDesigned for use with OEM-style hubs and rotors — no knuckle swaps or custom adapters required.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e       \u003cspan\u003e \u003c\/span\u003e\u003cem\u003e *OEM - 5x100 - 326mm x 30mm Rotor - Also came on some BRZ (5x100 Cars Only) Pre-2015 WRX\/STI  Part No.-26300FE001\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e         *OEM 5x114.3 - 326mm x 30mm Rotor - Fit 4 pot Brembos (5x114.3 Cars Only) 2015+ WRX\/STI   Part No.-26300FE070\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e       \u003cspan\u003e \u003c\/span\u003e\u003cem\u003e *OEM - 5x100 - 326mm x 30mm Rotor - Also came on some BRZ (5x100 Cars Only) Pre-2015 WRX\/STI  Part No.-26300FE001\u003c\/em\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cul data-end=\"2850\" data-start=\"2577\"\u003e\n\u003cli data-end=\"2612\" data-start=\"2577\"\u003e\n\u003cp data-end=\"2612\" data-start=\"2579\"\u003eRotor Size: 340mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2670\" data-start=\"2613\"\u003e\n\u003cp data-end=\"2670\" data-start=\"2615\"\u003ePad Type: F40 (FMSI D968)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2770\" data-start=\"2671\"\u003e\n\u003cp data-end=\"2770\" data-start=\"2673\"\u003eDesigned for use with OEM-style hubs and rotors — no knuckle swaps or custom adapters required.\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e       \u003cspan\u003e \u003c\/span\u003e\u003cem\u003e   * OEM Subaru 340mm Rotor (5x114.3 Cars Only)  Part No.-26300VA000\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e         *OEM 5x114.3 - 326mm x 30mm Rotor - Fit 4 pot Brembos (5x114.3 Cars Only) 2015+ WRX\/STI   Part No.-26300FE070\u003c\/em\u003e\u003c\/p\u003e","brand":"GrimmSpeed","offers":[{"title":"326mm Rotor","offer_id":44614040158252,"sku":"GRM.1169.1.RED","price":1624.0,"currency_code":"USD","in_stock":true},{"title":"340mm Rotor","offer_id":44614040191020,"sku":"GRM.1170.1.RED","price":1608.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0374\/6149\/1756\/files\/GRM.113.1.0-4.png?v=1754014021","url":"https:\/\/wrxdaily.com\/products\/grimmspeed-4-piston-brake-caliper-kit-red-2002-2021-wrx-2004-2021-sti","provider":"WRXDaily","version":"1.0","type":"link"}