Ferrea Endurance roller rocker valve springs Kit (Honda B-Serie engines)

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 valvesprings and retainers will reliably allow your engine to rev high without the worry of part failure, valve float, or coil bind. Aftermarket valvesprings are made out of superior metal alloy's and optimized spring rates to make sure your valvetrain can keep up with your cams at high RPM. Whether you are rebuilding your engine, or building an all out race engine, replacing your valvetrain with Ferrea components will allow you to rev higher, and go more aggressive on your cams.

Ferrea takes great pride in offering premium quality Spring Seat Locators. Fully CNC machining in-house from 4140 chromoly alloy for different applications. Each piece is crafted to exact tolerances OD & ID specs and insure flat, parallel spring pad to the bottom surface. Heat treatment consists of a hard Nitrided surface for unmatched toughness and anti-wear characteristics.

Valve Spring Specs:

-Endurance Application
-Outside Diameter: 22.85mm/30.45mm
-Inside Diameter: 17.5mm/22.85mm
-Seat Pressure: 110lbs @ 34mm
-Open Pressure: 260lbs @ 21mm
-Rate Inch: 292lbs
-Coil Bind: 20mm
-Max Net Lift: 13mm
-This Spring requires Ferrea Titanium Retainer E11000 or E11000LW or Ferrea Tool Steel Retainer E20041 & Ferrea Spring Seat Locator SL1044 (Discard OEM Spring Seat Locator) This Spring requires Ferrea Roller Rocker RR1000.

Complete kit of 16 dual springs for the intake and exhaust cams.