{"product_id":"wilwood-gp320-rear-brake-kit-140-11774-with-4-piston-caliper-and-drilled-steel-rotor","title":"Wilwood GP320 Rear Brake Kit 140-11774 with 4-Piston Caliper and Drilled Steel Rotor","description":"\u003cp\u003eUpgrade rear braking performance with the Wilwood GP320 Right\/Left Rear Brake Kit, part number 140-11774. Designed for sprint car applications, this complete brake system combines a lightweight aluminum four-piston caliper with a drilled and scalloped steel rotor for dependable stopping power and efficient heat management. The gray anodized finish adds corrosion resistance and a professional appearance suitable for demanding motorsports environments.\u003cbr\u003eThe GP320 kit includes a rear-mounted caliper and a steel rotor engineered for consistent braking performance during repeated high-load use. Its sprint car hat features a 3 x 46 spline configuration, providing application-specific fitment for compatible rear-end assemblies. The right- and left-side design supports flexible installation while helping simplify component selection for race car builders and performance-focused enthusiasts.\u003cbr\u003eWilwood is recognized for purpose-built braking systems designed to deliver reliable pedal response, predictable control, and durable operation. This GP320 rear brake kit is a practical choice for competition vehicles requiring a compact, high-performance rear braking solution. Verify wheel, axle, mounting, and spline compatibility before installation, and follow all manufacturer recommendations for setup, bedding, inspection, and maintenance.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBrand: Wilwood\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePart Number: 140-11774\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBrake System: GP320 rear brake kit\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCaliper: Four-piston aluminum caliper\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRotor: Drilled and scalloped steel rotor\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRotor Size: 10.5 inches\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSprint Car Hat: 3 x 46 spline configuration\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFinish: Gray anodized aluminum\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eApplication: Right- or left-side rear installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUse: Sprint car and motorsports applications\u003c\/li\u003e\u003c\/ul\u003e","brand":"WILWOOD","offers":[{"title":"Default Title","offer_id":67644095758588,"sku":"WIL140-11774","price":621.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0763\/8797\/5420\/files\/WIL140-11774.jpg?v=1791087277","url":"https:\/\/ozkonickustomz.com\/products\/wilwood-gp320-rear-brake-kit-140-11774-with-4-piston-caliper-and-drilled-steel-rotor","provider":"Ozkonic Kustomz LLC","version":"1.0","type":"link"}