{"product_id":"grimmspeed-4-piston-brake-caliper-kit-326mm-rotor-red-2002-2021-subaru-wrx-sti-qj93a6","title":"GrimmSpeed 4-Piston Brake Caliper Kit (326mm Rotor) - Red - 2002-2021 Subaru WRX \/ STI","description":"\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0\"\u003e\u003cstrong\u003eEngineered for Performance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eThe stock single-piston calipers found on most Subaru models are functional but not designed for the demands of aggressive driving, track use, or extensive performance builds that many Subaru enthusiasts pursue. GrimmSpeed’s 4-Piston Brake Caliper Kit fills this gap by offering a purpose-built, fixed caliper system specifically tailored for Subaru vehicles. This setup provides balanced stopping power, improved heat dissipation, and a consistent pedal feel, enhancing braking performance and driver confidence. Designed and tested under real-world conditions, this kit delivers a true performance upgrade without the hassle of sourcing used Brembos or fitting custom brackets.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0\"\u003e\u003cstrong\u003eComplete, Application-Specific Upgrade\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eEach GrimmSpeed kit is built to perfectly fit specific Subaru models, combining forged aluminum calipers with the correct rotor and bracket configuration for your setup. Offered in either Red or Gunmetal Gray anodized finishes, the calipers are made to resist heat and corrosion while presenting a sleek, motorsport-ready look. Suitable for a wide range of uses—from daily-driven street cars to dedicated track machines—this kit provides the reliable stopping power and confidence Subaru drivers expect.\u003c\/p\u003e\n\u003cp data-start=\"971\" data-end=\"1380\"\u003e \u003c\/p\u003e\n\u003ch3 data-start=\"1387\" data-end=\"1410\"\u003e\u003cstrong data-start=\"1394\" data-end=\"1410\"\u003eDETAILS:\u003c\/strong\u003e\u003c\/h3\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 – 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 – 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 – 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 – 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 – 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 – 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 – Compatible with factory lines (new lines may be recommended depending on vehicle)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2099\" data-end=\"2125\"\u003e\n\u003cstrong data-start=\"2106\" data-end=\"2125\"\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ch3 data-start=\"2099\" data-end=\"2125\"\u003e\u003cstrong data-start=\"2106\" data-end=\"2125\"\u003eWhat’s Included\u003c\/strong\u003e\u003c\/h3\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\u003ch3 data-start=\"2509\" data-end=\"2527\"\u003e\n\u003cstrong data-start=\"2516\" data-end=\"2527\"\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ch3 data-start=\"2509\" data-end=\"2527\"\u003e\u003cstrong data-start=\"2516\" data-end=\"2527\"\u003eFitment\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e02-21 WRX\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e04-21 STI\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eRotor Size: 326mm x 30mm - STI fitment rotor\u003c\/li\u003e\n\u003cli\u003ePad Type: \"F50\" or FMSI D1001 - OEM 4-Piston STI Brembo Pads\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\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e        \u003cem\u003e *OEM x-ref - 5x100 - 326mm x 30mm Rotor - 2004 STI - Also came on some BRZ (5x100 Cars Only) Part No.-26300FE001\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e         *OEM x-ref 5x114.3 - 326mm x 30mm Rotor - Fit 4 pot Brembos (5x114.3 Cars Only) 2005-2017 WRX\/STI   Part No.-26300FE070\u003c\/em\u003e\u003c\/p\u003e","brand":"GrimmSpeed","offers":[{"title":"Default Title","offer_id":45711756230742,"sku":"grmGRM113422.1112.1.0.RED-KIT","price":487.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/0411\/1190\/files\/tbsy19fd6bsb_fc010343-cc3c-4ba0-a396-59f087765cc4.jpg?v=1788775065","url":"https:\/\/truegearus.com\/products\/grimmspeed-4-piston-brake-caliper-kit-326mm-rotor-red-2002-2021-subaru-wrx-sti-qj93a6","provider":"TrueGear","version":"1.0","type":"link"}