BMW E30 320i 325i motor M20

Double spring valve kit for BMW E30 320 325 engine M20B20 and M20B25. 
High recommended for high revs and high performance engines. 

Kit include 24 valves springs (12 internal valve spring and 12 external valve spring). 

Installed spring: 37mm
Valve lift: 13mm
Hardeness: 122 kp