H&R 60mm ID Single Race Spring Length 80mm Spring Rate 30 N/mm or 171 lbs/inch - ZF080-030 Aluminum Tubing delivering unmatched durability and a

delivering unmatched durability and a flawless fit

We saw exceptional improvement in our trail simulation heat-soak testing where

This 6-1/2” tall 360-degree radial flow air filter features a 3-1/2” round flange and our oiled Pro 5R media with five layers of progressively finer cotton gauze media for maximum airflow and performance

Upgrade your G22 4-Series with AutoTecknic's Replacement M-Inspired Carbon Fiber Mirror Covers and experience the difference for yourself

This Silver Bullet throttle body spacer comes with a pair of 1/8” NPT ports that can be used for vacuum accessories or water methanol injection

H&R 60mm ID Single Race Spring Length 80mm Spring Rate 30 N/mm or 171 lbs/inch - ZF080-030 Aluminum Tubing delivering unmatched durability and aH&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