> Mitsubishi performance racing engine valves by SINUS
"Xtract your EVO, Eclipse or 3000GT engine to it’s peak" SINUS offers its wide range of performance racing valves series under the
SINUS PERFORMANCE™ brand name, for all popular Mitsubishi engines.
From performance stainless steel, through nickel superalloys, and up to designated titanium alloys, SINUS performance valves will provide ultimate benefits to EVO, Eclipse, or 3000GT engine.
From street performance to professional racing, SINUS’s long lasting professional experience in designing, configuring, metallurgy and production of valves for Sport Compact applications, titles SINUS above all competitors.
SINUS was established in 1949 and is one of the most experienced and senior manufacturers of valves for internal combustion engines. SINUS conducts constant research and development (R&D) activities in order to keep its technological pulse beating faster and stronger then any other valves manufacturer. SINUS is practically the only valves manufacturer that manages to innovate the industry with cutting edge processes, treatments and solutions that redefines the term quality time after time.
Quick Links:
• MITSUBISHI ECLIPSE GS-GST (4G63-4G63T) 2.0L DOHC 16V
• MITSUBISHI EVOLUTION (EVO) (4G63-4G63T) 2.0L DOHC 16V
• MITSUBISHI 3000 GT (4G72-4G72T) 3.0L DHOC 24V
SINUS Performance Series™ 
- 21-4N (EV8) - Austenite stainless steel single piece forged Structure
SIL-1 (HNV3) - Hard tip
Hard chrome plating
Sprial polish
JetFlow Cut™ - Undercut stem on Intake Valves
Your choice of dished or flat valve head
SINUS Performance Plus Series™ 
- 21-4N (EV8) - Austenite stainless steel single piece forged Structure
SIL-1 (HNV3) - Hard tip
Hard chrome plating
Stelite #6 Faced Seat - Substantial valve head strength empowerment
Spiral polish
JetFlow Cut™ - Undercut stem on Intake Valves
SnakeSkin Superfinish™ - Friction reducing solution
Your choice of dished or flat valve head
SINUS Extreme Performance Series™ 
- 21-4N (EV8) - Austenite stainless steel single piece forged Structure
SIL-1 (HNV3) - Hard tip
Physical Vapor Coating Deposition - CrN | TiN | ZrN | M.L.S.P™
Mirror Polish
JetFlow Cut™ - Undercut stem on Intake Valves
Your choice of dished or flat valve head
SINUS Ultimate Performance Series™ 
- Inconel X-751 / Nimonic N80A - Nickel superalloy Bi-Metal structure
- SIL-1 (HNV3) Martensite Stainless Steel - Hard tip
- Physical Vapor Coating Deposition - CrN | TiN | ZrN | M.L.S.P™
- Mirror Polish
- JetFlow Cut™ - Undercut stem on Intake Valves
- SnakeSkin Superfinish™ - Friction reducing solution
- Your choice of dished or flat valve head
Quick Links:
• MITSUBISHI ECLIPSE GS-GST (4G63-4G63T) 2.0L DOHC 16V
• MITSUBISHI EVOLUTION (EVO) (4G63-4G63T) 2.0 DOHC 16V
• MITSUBISHI 3000 GT (4G72-4G72T) 3.0L DHOC 24V