Exhaust Valves for 1994-2005 Mazda Miata 1.8L BP Engines
MAEVN-1204
Head Diam: 28.00mm (STD)
Stem Diam: 5.94mm
Length: 102.6mm (+0.6mm)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Exhaust
MAEVI-1204
Head Diam: 28.00mm (STD)
Stem Diam: 5.94mm
Length: 102.6mm (+0.6mm)
Material: Inconel
Groove Type: Single Groove
Valve Type: Exhaust
MAEVN-1206
Head Diam: 29.00mm (+1mm)
Stem Diam: 5.94mm
Length: 102.6mm (+0.6mm)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Exhaust
MAEVI-1206
Head Diam: 29.00mm (+1mm)
Stem Diam: 5.94mm
Length: 102.6mm (+0.6mm)
Material: Inconel
Groove Type: Single Groove
Valve Type: Exhaust
*Single Valves Are Also Available In The Drop Down Menu Below*
Our stainless steel intake valves are manufactured from an enhanced version of EV8 (21-4N) steel. We have chosen this material specifically because it’s the highest grade of steel available and provides the strength to withstand just about any application. Our exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for even greater strength at higher temperatures. Our stainless steel valves are one piece forged valves, and depending on the application feature hardened tips, hardened seats, swirl polish, undercut, and our black nitride coating. Our black nitride coated valves feature a harder surface area and a smoother finish, providing less friction and subsequently longer life.
Supertech manufactures a variety of high performance Inconel valves for many applications. These valves are manufactured from a Nickel base super alloy material (Inconel 751 or Nimonic 80A) this material is chosen because it is designed to withstand very high temperatures. These valves feature a one-piece forging, hardened tip, and our “superfinish” stem. Our Inconel valves are extremely popular choice for turbo and supercharged applications.
MAEVN-1204
Head Diam: 28.00mm (STD)
Stem Diam: 5.94mm
Length: 102.6mm (+0.6mm)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Exhaust
MAEVI-1204
Head Diam: 28.00mm (STD)
Stem Diam: 5.94mm
Length: 102.6mm (+0.6mm)
Material: Inconel
Groove Type: Single Groove
Valve Type: Exhaust
MAEVN-1206
Head Diam: 29.00mm (+1mm)
Stem Diam: 5.94mm
Length: 102.6mm (+0.6mm)
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Exhaust
MAEVI-1206
Head Diam: 29.00mm (+1mm)
Stem Diam: 5.94mm
Length: 102.6mm (+0.6mm)
Material: Inconel
Groove Type: Single Groove
Valve Type: Exhaust
*Single Valves Are Also Available In The Drop Down Menu Below*
Our stainless steel intake valves are manufactured from an enhanced version of EV8 (21-4N) steel. We have chosen this material specifically because it’s the highest grade of steel available and provides the strength to withstand just about any application. Our exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for even greater strength at higher temperatures. Our stainless steel valves are one piece forged valves, and depending on the application feature hardened tips, hardened seats, swirl polish, undercut, and our black nitride coating. Our black nitride coated valves feature a harder surface area and a smoother finish, providing less friction and subsequently longer life.
Supertech manufactures a variety of high performance Inconel valves for many applications. These valves are manufactured from a Nickel base super alloy material (Inconel 751 or Nimonic 80A) this material is chosen because it is designed to withstand very high temperatures. These valves feature a one-piece forging, hardened tip, and our “superfinish” stem. Our Inconel valves are extremely popular choice for turbo and supercharged applications.