Ferrea Single Valve Spring & Titanium Retainers for BMW M240 (G42) M340 (G20) & Toyota Supra MKV (A90) B58 B58B30C Engines Iroz Motorsport Classic Beanie Main Journal: 55mm

Main Journal: 55mm

and modify ignition timing and much more to improve the overall driving performance of the 3

Reinstall on motor

• BimmerLight

BMW 4' M440i M440iX (G22 G23 G26)

Ferrea Single Valve Spring & Titanium Retainers for BMW M240 (G42) M340 (G20) & Toyota Supra MKV (A90) B58 B58B30C Engines Iroz Motorsport Classic Beanie Main Journal: 55mmFerrea Single Valve Springs & Titanium Retainers Fitment: BMW M240 (G42) M340 (G20) & Toyota Supra MK5 (A90) Gen 2 B58 B58B30C Engines KT4048 The new Ferrea Valve Springs are processed with premium grade alloy and feature special thermal treatment. Ferrea's advanced spring design and material specs have uniform load and stress distribution even in the most extreme racing conditions. Great for high revving applications. These valve springs and