GSC P-D Mitsubishi 4B11T 21-4N Chrome Polished Intake Valve – 35mm Head (STD) – Single

SKU: 2022-01

GSC P-D Mitsubishi 4B11T 21-4N Chrome Polished Intake Valve – 35mm Head (STD) – Single for 2008-2015 Lancer Evolution X, Ralliart & 2010-2014 Genesis Coupe

GSC Power-Division single chrome polished intake valve uses 21-4N stainless steel for Mitsubishi 4B11T engines in 2008-2015 Lancer Evolution X, Ralliart and 2010-2014 Hyundai Genesis Coupe 2.0T. Built for high boost and RPM in turbo setups, it boosts airflow with exact machining. Drop-in design fits stock valvetrain while handling extreme conditions for reliable power gains.

Key Features

• 21-4N Stainless Steel Construction: High-nickel alloy resists fatigue and holds strength at temperatures to 1600°F for sustained turbo performance.
• Chrome Polished Finish: Swirl polished stem cuts friction, improves heat transfer and prolongs valve guide wear for dependable operation.
• 35mm Standard Head Diameter: 35.00mm head, 5.95mm stem, 107.90mm length matches OEM for direct install with better airflow dynamics.
• One-Piece Forged Design: Forged construction avoids multi-piece failures, works with high lift cams and stiff valve springs.
• Precision Engineering: CNC tolerances deliver tight seating, leak-free seal and minimal bounce at peak RPM.

Product Notes

• Sold individually. Order four for full intake valve replacement.
• Check valve guides and seats before install for tight seal.
• Shipped in protective foam sleeve to avoid transit damage.

Installation Notes

• Professional installation recommended.
• Valve stem to guide clearance 0.020-0.060mm. Lap valves if required for seal.
• Works with stock retainers and springs. Use GSC springs for high RPM builds.

This Part Fits

Year	Make	Model	Submodel
2008-2015	Mitsubishi	Lancer	Evolution X MR
2008-2015	Mitsubishi	Lancer	Evolution X GSR
2009-2015	Mitsubishi	Lancer	Ralliart
2010-2011	Mitsubishi	Lancer	Ralliart Sportback
2010-2014	Hyundai	Genesis Coupe	2.0T
2010-2014	Hyundai	Genesis Coupe	2.0T Premium
2010-2014	Hyundai	Genesis Coupe	2.0T R-Spec
2010	Hyundai	Genesis Coupe	2.0T Track

Why Choose GSC Power-Division?

• Track tested in pro racing with dyno hours backing durability.
• Built to aerospace standards for defect-free reliability.
• Data driven for 4B11T engines with exact fitment specs.

Frequently Asked Questions

• Q: Does this valve fit 2008-2015 Mitsubishi Lancer Evolution X MR?
  A: Yes, direct fit for all 4B11T Evo X models including MR, GSR from 2008-2015 plus listed Ralliart.
• Q: What material is used and why chrome polished?
  A: Forged 21-4N stainless steel for heat resistance. Chrome polish on stem reduces wear and holds oil for longer life.
• Q: What is the warranty and installation advice?
  A: Limited lifetime warranty on defects. Pro install checks clearances and follows break-in procedure.

Shipping & Handling

• Method: UPS Ground or USPS Priority
• Availability: In stock – ships same or next business day
• Packaging: Protective foam sleeve in 6x4x1 inch box
• Weight: 0.2 lbs (including packaging)