Ferrea Performance Valve Spring Kit, For BMW M50/M52/S50/S52

Ferrea Performance Valve Spring Kit. Including:

• (24) High performance Dual Valves Springs
• (24) Titanium Valve Retainers
• (24) Valve Spring Seat Locators

Custom Valve Spring Kits Available for long duration/high lift camshafts, email with camshaft card/profile and build specs for recommendation.

Specifications below:

(S42/M42/M50/S50/M52/M54)
Type/Material/Application: Dual Spring - Turbo - Special Alloy
Outside Diameter: 22.75 mm/29.5 mm
Inside Diameter: 17.1 mm/22.75 mm
Seat Pressure: 80 lbs @ 36mm
Open Pressure: 180 lbs @ 26 mm
Rate Inch: 254 lbs
Coil Bind: 21 mm
Max Net Lift: 14 mm

Ferrea Titanium Retainer #E11025

Ferrea Spring Seat Locator #SL1021 (Discard OEM Spring Seat Locator).