{"product_id":"wilwood-caliper-piston-spring-37-72-od-x-1-00","title":"Wilwood Caliper Piston Spring 37\/.72 OD x 1.00","description":"Caliper Piston Knock Back Springs. Used in low brake pedal situations due to piston knock back caused by vibration, mount or spindle flex.  Part # 300-12995 (.72” diameter) is used with all Wilwood Thermlock pistons and Wilwood’s conventional stainless steel pistons from 1.00” to 1.38” diameter. Spring use in stainless pistons require a relief cut not present in earlier versions of pistons. Please check your application before ordering.","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":47533592871221,"sku":"WIL300-12995","price":3.14,"currency_code":"USD","in_stock":true}],"url":"https:\/\/4wheelingplus.com\/products\/wilwood-caliper-piston-spring-37-72-od-x-1-00","provider":"4wheelingplus.com","version":"1.0","type":"link"}