GSC P-D Mitsubishi 4G63T Extreme Pressure Single Conical Valve Spring & Ti Retainer Kit (Incl Seat) (5078)
Pushing the limits, breaking records, and aiming for victory? Look no further than our GSC Power-Division High Boost High RPM Valve Spring Kit for the 4G63T – the key to elevating your engine performance to unprecedented levels. Tailored for those seeking the pinnacle of power, this kit is not for street cars or sub-1,000 HP builds; for those, explore our GSC5040 or GSC5041 beehive spring kits. Engineered for the extreme, our GSC5078 kit empowers you to command the valves under intense conditions – handling 60+ psi of boost at a blazing 11,000 RPM with 12.1mm lift cams. In the fierce world of racing, where every fraction of a gram makes a difference, our redesigned Ti Retainer steals the spotlight – 10% lighter and smaller yet fortified to endure the demands of a valvetrain operating at 11,000 RPM. The GSC5078 kit doesn't stop there; it includes our GSC4041 chromoly CNC replacement valve spring seats, each 0.035" thicker than the OEM part. Versatile and practical, this kit accommodates NEW OEM valve spring keepers or our GSC1003 keeper kit. No need for specialized aftermarket locks with potential angle mismatches. The set includes 16 conical valve springs, 16 Lightweight Ti Retainers, and 16 robust CNC chromoly spring seats – your ticket to unparalleled racing performance.
Max RPM: 11,000 RPM
Max boost: 60+ psi
Applications
-
Mitsubishi Evo 1/2/3/4/5/6/7/8/9
- Mitsubishi Eclipse/Eagle Talon/Plymouth Laser
Features
| GSC5078 RACE Conical Valve Spring Kit with Ti Retainer for 4G63 | |||||
| Setup | Coil Bind (in) | Install Height (in) | Seat Pressure (lbs) | Open Pressure | Maximum Valve Lift (in) |
| HP Conical | 0.952 | 1.504 / 1.484 | 134 /140 |
275 lbs @ 12.1mm lift / 280 lbs @ 12.0mm lift |
0.476 |
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Depending on the package, we ship using different carriers according to the item's location, content, and size.
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Unless otherwise noted as "In Stock" or exact ETA. Special Order items have an ETA of 5+ weeks.
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Processing and logistics on in stock international orders can take up to 7 business days to process & ship.
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Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail. All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).
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WARNING: Operating, servicing and maintaining a passenger vehicle or off-highway motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to www.P65Warnings.ca.gov/passenger-vehicle.
GSC P-D Mitsubishi 4G63T Extreme Pressure Single Conical Valve Spring & Ti Retainer Kit (Incl Seat) (5078)
