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SKU: 2022-8
GSC P-D 4B11T 21-4N Chrome Polished Intake Valve - 35mm Head (STD) - SET 8 for 2008-2016 Mitsubishi Lancer Evolution X
Equip your 2008-2016 Mitsubishi Lancer Evolution X with this set of 8 GSC Power-Division intake valves designed for the 4B11T engine. Made from 21-4N stainless steel with chrome polished stems, these 35mm standard head valves handle high boost and RPM demands. They provide consistent sealing and flow for track or street use.
Key Features
- 21-4N Stainless Steel: One-piece forged material resists fatigue and maintains strength at elevated exhaust gas temperatures up to 1600°F.
- Chrome Polished Stems: 5.96mm diameter stems reduce guide wear and improve oil film retention for longer life.
- 35mm Head Diameter (STD): Matches factory specs at 35.00mm with 102.98mm overall length for drop-in compatibility.
- Advanced Finishing: Bead blasted face, swirl polished backs, and micro polished margins enhance airflow and seat sealing.
- Complete Set of 8: Full intake valve kit covers all cylinders for comprehensive valvetrain refresh.
Product Notes
- Inspect valve guides and seats before installation for proper clearance.
- Set valve lash to manufacturer specs after install for optimal operation.
- Packaged in protective foam-lined box to prevent damage in transit.
Installation Notes
- Professional installation recommended.
- Measure installed height to confirm stem-to-guide clearance.
- Works with OEM or aftermarket retainers, springs, and keepers.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008-2016 | Mitsubishi | Lancer | Evolution X |
| 2008-2016 | Mitsubishi | Lancer Evolution | X GSR |
| 2008-2016 | Mitsubishi | Lancer Evolution | X MR |
Why Choose GSC Power-Division?
- Race components trusted in Formula Drift and drag racing classes.
- Engineered with input from professional tuners for import engines.
- Backed by limited lifetime warranty on manufacturing defects.
Frequently Asked Questions
-
Q: Do these valves fit all 4B11T engines in Evo X models?
A: Yes, they are direct fit for 2008-2016 Mitsubishi Lancer Evolution X with 4B11T 2.0L turbo engines across GSR and MR submodels. -
Q: What makes the 21-4N material suitable for performance?
A: 21-4N offers high nickel content for superior heat resistance and tensile strength compared to 21-2N, ideal for turbocharged setups. -
Q: What warranty coverage is provided?
A: Limited lifetime warranty covers defects in materials and workmanship when installed by qualified technicians.
Shipping & Handling
- Method: Standard ground
- Availability: In stock - ships same or next business day
- Packaging: Foam-lined protective box, 8 x 6 x 2 inches
- Weight: 0.75 lbs
GSC Power Division
GSC Power Division is a manufacturer of precision-engineered camshafts, valve springs, and valvetrain components designed for high-performance and competition engines across domestic, import, and diesel platforms. Founded by engineers with deep roots in motorsport, GSC Power Division components are machined to exacting tolerances and heat-treated to survive the demands of forced induction and high-rpm applications that destroy stock valvetrain parts. The brand is particularly well-known in the Mitsubishi Evo, Subaru STI, Nissan RB, and Toyota 2JZ communities where aggressive camshaft profiles are essential for extracting maximum power from turbocharged four-cylinder and six-cylinder engines. Whether building for drag racing, road course competition, or a high-powered street car, GSC Power Division camshafts and valve springs are a proven upgrade path. Popular Upgrades GSC Power Division S1, S2, and S3 camshafts are the most popular selections, with each profile offering progressivel...
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