Description
Supertech intake valves are made exclusively from an enhanced version of EV8 (21-4N) steel. This is the highest grade of steel available and provides the strength to withstand just about any application. These exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for greater strength at higher temperatures. Some applications call for hardening of certain areas such as the tips and or the seats. For these applications, Supertech will often times weld other hard metal alloys to the valve for increased durability.
Coatings:
Chrome Coating or Black Nitride Coating
Black Nitride Coating is a hardening treatment that has been steadily growing in popularity over the last several years. These black Nitride coated valves feature harder surfaces and smoother finishes, providing less friction and subsequently longer life.
- Head Diam: 39.00mm(std)
- Material: Stainless Steel 21-4N
- Groove Type: Triple Groove
- Length: 105.95mm
- Stem Diam: 6.97mm