GSC 4B11 Evo X Exhaust Valves
STD 29mm Set of 8 (GSC2021-8)
$161.73
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$161.73
Product Overview
Swirl polished valve heads improve airflow and reduce turbulence
Key Features
- Back-cut design reduces weight for higher RPM and aggressive cam profiles
- Micro-polished stems minimize oil retention and reduce stem drag
- Valve tip heights are precisely adjusted for optimal valve train geometry
- Compatible with OEM or GSC upgraded valve locks
- Valves are engineered to maintain consistent sealing under extreme conditions
Specifications
| Head Diameter Size | 29mm or 30mm |
|---|---|
| Valve Stem Diameter | 5.5mm |
| Overall Length | 105.85mm |
| Material | 23-8N Stainless or Super Alloy |
| Quantity | Set of 8 or Single Valve |
| Part Number | GSC 2021-8, GSC 2021-01, GSC 2023-8, GSC 2023-01, GSC 2025-8, GSC 2025-01, GSC 2027-8, GSC 2027-01 |
Available Configurations
| Part Number | Configuration |
|---|---|
| GSC-2021-8 | STD 29mm Set of 8 (GSC2021-8) |
| GSC-2021-01 | STD 29mm Single Valve (GSC2021-01) |
| GSC-2023-8 | +1 30mm Set of 8 (GSC2023-8) |
| GSC-2023-01 | +1 30mm Single Valve (GSC2023-01) |
| GSC-2025-8 | Super Alloy STD 29mm Set of 8 (GSC2025-8) |
| GSC-2025-01 | Super Alloy STD 29mm Single Valve (GSC2025-01) |
| GSC-2027-8 | Super Alloy +1 30mm Set of 8 (GSC2027-8) |
| GSC-2027-01 | Super Alloy +1 30mm Single Valve (GSC2027-01) |
Applications
- Mitsubishi 4B11 Evo X
- 2008-2015 Model Years
What's Included
- 8 valves (set)
- 1 single valve