H&R 60mm ID Single Race Spring Length 120mm Spring Rate 300 N/mm or 1712 lbs/inch 2020-chevrolet-corvette-esi6387802 504 Bore 12:1 CR -

504 Bore 12:1 CR - Set of 4 **MTO Non-Cancel**

Crankcase breather filters come pre-oiled and are washable and reusable

This version of the kit does NOT include the installation tool

Best of all the insert bushings only really make themselves known in aggressive acceleration

ARP Ford SS 2-Bolt 3/8in Hex Starter Bolt Kit

H&R 60mm ID Single Race Spring Length 120mm Spring Rate 300 N/mm or 1712 lbs/inch 2020-chevrolet-corvette-esi6387802 504 Bore 12:1 CR -H&R 2. 50" I. D. Race Springs are made with extremely high tensile strength wire alloy which allows the use of a thinner wire. Manufactured using advanced materials and precision technology in Germany, H&R 2. 50" I. D. Race Springs are crafted from special lightweight (hf) 54SiCr6 spring steel. For any given spring rate, they are on average 15% lighter and have 10% more travel than competitors' springs. Main springs range from 6" to 18" in length and