{"product_id":"wilwood-120-13900","title":"Wilwood D154-R GM Metric Caliper, Type III Anodized \/ 5.46-Inch Mount \/ 1.04-Inch-wide Rotor","description":"\u003cp\u003eThis Wilwood D154-R GM Metric is a 1-piston brake caliper with a Type III anodized finish for a nominally 1.04-inch-wide rotor. Its 5.46-inch floating mounting centers and 2.50-inch piston bore must match the brake assembly. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company makes disc brake systems and components, including calipers, rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications.\u003c\/p\u003e\u003cp\u003eThis forged aluminum floating caliper replaces the GM metric D154 layout in racing applications. Hardened Wilwood slide pins are required and sold separately; the centered inlet avoids interference with the slide-pin arrangement.\u003c\/p\u003e\u003ch2\u003eTechnical Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 120-13900\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent:\u003c\/strong\u003e Wilwood D154-R GM Metric; one caliper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e universal side configuration; Floating; 5.46-inch centers; 0.69-inch mounting holes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiston arrangement:\u003c\/strong\u003e 1 piston; 2.50-inch bore; stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydraulic piston area:\u003c\/strong\u003e 4.90 square inches, as specified by Wilwood\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor width:\u003c\/strong\u003e 1.04-inch nominal; 0.81–1.04-inch permitted range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor diameter range:\u003c\/strong\u003e 11.00–12.19 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePad shape:\u003c\/strong\u003e Wilwood type D154; compound selected separately\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody and finish:\u003c\/strong\u003e Forged aluminum; Type III anodized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluid inlet:\u003c\/strong\u003e 1\/8-27 NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDust boots:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount height:\u003c\/strong\u003e 0.37 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment \u0026amp; Compatibility\u003c\/h2\u003e\u003cp\u003eFor a replacement, compare the entire caliper specification rather than the finish or logo. On an adapted system, establish rotor alignment and piston-area requirements before choosing the mounting bracket. GM metric mounting requires hardened slide-pin kit 230-0619, sold separately. Verify the relevant race rules before installation.\u003c\/p\u003e\u003cp\u003eThis listing covers one caliper. Match the brake pads, rotor, hose and mounting arrangement to the complete brake system.\u003c\/p\u003e\u003cp\u003ePMB Performance has over 20 years of brake and parts experience. Send us the caliper specifications, rotor measurements and bracket details if you need help selecting the correct component.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67764029063346,"sku":"120-13900","price":186.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/120-13900-xl.jpg?v=1792508817","url":"https:\/\/pmbperformance.com\/products\/wilwood-120-13900","provider":"PMB Performance","version":"1.0","type":"link"}