Ferrea Valve Springs and Retainers Kit for BMW 135i E8x / 335i E9x N54
 
This Ferrea Racing valve spring kit for the N54 engines found in the BMW 135i E8x / 335i E9x is a full intake and exhaust combo coming with precision wound valve springs and titanium retainers! Ready to install with any kind of valves, this set will bring your built cylinder head the safety you want under high pressures, rev, or temps!
 
Direct bolt on
Full 48 pieces kit
24 valve springs (intake and exhaust)
24 titanium retainers (intake and exhaust)
Made in USA
BMW 1-Serie E81/E82/E87/E88 135i
BMW 1-Serie E81/E82/E87/E88 1M COUPE
BMW 3-Serie E90/E91/E92/E93 335i