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GSC P-D Mitsubishi 4B11T Beehive Valve Springs & Ti Retainer Kit (Use w/OE Spring Seats) GSC Power Division GSC5042
GSC P-D Mitsubishi 4B11T Beehive Valve Springs & Ti Retainer Kit (Use w/OE Spring Seats) GSC Power Division GSC5042
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GSC P-D Mitsubishi 4B11T Beehive Valve Springs & Ti Retainer Kit (Use w/OE Spring Seats)

GSC5042
GSC5042
Valve Springs, Retainers
20+ Units In Stock - Ships Next Business Day
$ 470.49 $ 399.92
$ 399.92

SKU: 5042 | UPC: GSC5042

GSC Power-Division Mitsubishi 4B11T Beehive Valve Springs & Ti Retainer Kit (2008-2015 Evo X, Ralliart. Use w/OE Spring Seats)

GSC Power-Division Beehive Valve Springs and Titanium Retainer Kit delivers precise valvetrain control for Mitsubishi 4B11T engines in 2008-2015 Lancer Evolution X, 2009-2015 Lancer Ralliart, and 2010-2011 Lancer Ralliart Sportback models. Lighter beehive design cuts mass versus stock dual springs while maintaining 120lb seat pressure for rock-solid stability at 9000+ RPM. Pair with titanium retainers to drop inertia and support turbo builds up to 35psi boost.

Key Features

  • Beehive Progressive Design: Tapered shape reduces weight by 14g per spring over duals, fights harmonics for fatigue-free operation.
  • Seat Pressure: 120lbs at 1.720in ensures positive valve closure under extreme boost and high miles.
  • Open Pressure: 280lbs at 0.440in lift handles stock cams or upgrades without float.
  • Titanium Retainers: 7075 billet Ti saves 18g per valve versus steel, accelerates response.
  • Coil Bind Height: 1.150in with max lift 0.440in clears most aftermarket cams safely.

Product Notes

  • Requires OEM spring seats and locators for installation.
  • Kit contains 16 chromoly steel beehive springs and 16 titanium retainers for full 4B11T head.
  • Ships ready for immediate valvetrain upgrade, no core return needed.

Installation Notes

  • Professional installation recommended.
  • Reuse stock spring seats, retainers drop directly onto OEM valves.
  • Compatible with factory valve locks and keepers, no custom hardware required.

This Part Fits

Year Make Model Submodel
2008-2015 Mitsubishi Lancer Evolution
2009-2015 Mitsubishi Lancer Ralliart
2010-2011 Mitsubishi Lancer Ralliart Sportback

Why Choose GSC Power-Division?

  • Backed by 20+ years designing valvetrain for drag, time attack, and rally teams.
  • Every spring load-tested to +/-2lb tolerance for matchless consistency.
  • Dyno-proven in 1000hp+ 4B11T builds with zero failures reported.

Frequently Asked Questions

  • Q: Does this fit 2008-2015 Mitsubishi Lancer Evolution X?
    A: Yes, direct fit for all 4B11T-equipped Evo X models including MR and GSR when using OE spring seats.
  • Q: What materials are used in construction?
    A: Beehive springs from premium chromoly steel with dual angle machining. Retainers from lightweight 7075 aerospace titanium.
  • Q: What warranty coverage applies?
    A: Lifetime warranty on valve springs for manufacturing defects with proper installation. Retainers covered 1 year.

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Foam-secured box 10 x 10 x 6 inches
  • Weight: 5 lbs

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