Supertech Valves for the VG30D are one of the highest quality valves on the market. Stainless Steel for the intake, and Inconel 751 for the exhaust side since it tends to run hotter.

* Forged Valves
* Intake Valves, Black Nitride Coating, Stainless Steel Alloy, Swirled Polished, 34.50mm +0.5mm Oversized.
* Exhaust Valves, Inconel 751, Nickel based alloy, Higher Temperature Rating, 30.00mm +0.5mm Oversized.

​Supertech valve springs are computer designed to ensure smooth harmonics under high RPM and load. The stress levels are kept under control and fatigue is reduced for long durability under extreme conditions. These springs are made of premium Superclean Chrome Silicon Vanadium steel alloy, which is a tough alloy that was designed for higher performance and durability at high RPM\'s and memory retention.

Specs:

* Outer Spring O.D.: 27.50mm
* Outer Spring I.D.: 20.00mm
* Inner Spring O.D.: 20.00mm
* Inner Spring I.D.: 15.20mm
* Seat: 84 @ 35 (lbs@mm)
* Open (lift): 202 @ 10 (lbs@mm)
* Max net lift: 12.00mm
* Coil bind: 20.70mm
* Rate: 12.70 lbs/mm

Kit Includes:

Intake Valves, +0.5mm Oversized
Exhaust Valves, +0.5mm Oversized
Dual Springs
Dual Spring Titanium Retainers
Spring Seats
Viton Valve Seals