Supertech Nissan RB20 w/Hydraulic Lifter Inconel Intake Valve - +1mm Oversize - Set of 12 | 1989-1994 Nissan Skyline (NEVI-1042-12)

Nissan RB20 DOHC Inconel Exhaust Valves by Supertech

Supertech sodium filled valves made of Inconel/Nimonic alloy offer a significant reduction in valve head temperatures that are required for today’s modern turbo engines.

A cooler valve improves the material strength and durability while allowing the tuner more flexibility and a wider range of spark timing advances. Combine that with an average weight reduction of 10% and there isn’t a cooler valve on the market

Please Note: Use with Solid lifters

Features

• Head Diam: 27.50mm (+1.0)
• Material: Inconel-Nimonic
• Groove Type: Single Groove
• Length: 89.90mm
• Stem Diam: 5.94mm
• Back-cut angle
• Undercut stem
• One piece forged valve (non-magnetic)
• Magnetic friction welded wafer, Hardened to 52 HRC min
• “Superfinish” valve stem with a surface roughness of about 1/3 of a regular valve

Benefits

• Reduced valve head temperature
• Allows the tuner more flexibility and a wider range of spark timing advances
• Improves material strength and durability

Applications

• 1989-1994 Nissan Skyline

What's In The Box?

• 12 - Exhaust Valve

Warranty

• Due to the nature of the application, these parts are sold without any express warranty or any implied warranty of merchantability, or fitness for a particular purpose.