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Description
GSC 4B11 Conical Valve Spring Kit for Evo XThe GSC Power Division high pressure conical valve spring with titanium retainers for the Evo X includes a full set of 16 titanium retainers, 16 conical valve springs and 16 valve spring seats. Vehicle Fitment: Mitsubishi 4B11T2008 2015 Evolution X IN: 112 lbs @ 1. 294" EX: 110 lbs @ 1. 300" install height IN: 259 lbs @ 0. 849" EX: 257 lbs @ 0. 855" Up to 11. 30mm lift camsIncludes:(16) Beehive Valve Springs(16) Titanium Retainers(16) Valve Spring
The GSC Power-Division high pressure conical valve spring with titanium retainers for the Evo X includes a full set of 16 titanium retainers, 16 conical valve springs and 16 valve spring seats.Vehicle Fitment:
Mitsubishi 4B11T
2008-2015 Evolution X
• IN: 112 lbs @ 1.294" / EX: 110 lbs @ 1.300" install height
• IN: 259 lbs @ 0.849" / EX: 257 lbs @ 0.855"
• Up to 11.30mm lift cams
Includes:
(16) Beehive Valve Springs
(16) Titanium Retainers
(16) Valve Spring Seats
More Info:
True conical valve springs are not a new concept and are industry proven to provide several key advantages over traditional spring designs. A major advantage of conical springs vs. traditional cylindrical or beehive springs is the damping and removal of valvetrain harmonics.
Of the three designs, conical springs are the front runners in valvetrain harmonic stability. Utilizing a varying coil diameter as well as coil spacing, a conical spring acts as a natural harmonic damper in the transfer of valvetrain shock. This translates to less stress, less wear, and a longer life of the included components.
This level of protection is needed in today’s engines being pushed to their physical and mechanical limits by aftermarket modifications. Every GSC conical spring offers a super finished surface treatment to go along with the patented, multi-step heat treatment process. The finished product is an extremely reliable, high-performance spring allowing the users to push higher RPMs, use more aggressive cam profiles, and turn up higher boost pressures.
| Part Number: | GSC5062 |
| Springs: | Conical |
| Retainers: | Titanium |
| Coil Bind: | 0.818" |
| Install Height: | 1.294 / 1.300" |
| Seat Pressure: | 112 / 110 lbs |
| Open Pressure, 11.30mm Lift: |
259lbs @ 0.849" 257lbs @ 0.855" |
| Maximum Valve Lift: | 0.437" |
| Max RPM: | 11,000 |
| Max Boost: | 55 psi |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 446 reviews
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Product Reviews
★★★★★ 5
This is an awesome toy for dogs and cats!
Color: red
This is such a cool toy for a dog or a cat. I bought it for my 28 pound Aussie doodle. She’s slightly laid up after an injury recently so I’m trying to come up with things she can play with in the house without excessive running. This totally keeps her engaged and she loves it. But I have to watch her because every once in a while she’ll just catch it and try and chew on the ball! But I’ve been sharing it with my neighbor who has a cat. She’s borrowing it today and her cat loves it too! It seems pretty durable overall but it certainly doesn’t want my dogs’s jaws trying to crack it into. You do hear a humming noise while it’s running but I think that’s to be expected. Mostly I just love how much it entertains both dogs and cats!!
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Reviewed in the United States on March 7, 2026
★★★★★ 5
So cute and entertaining to watch!
Color: pink
Bought for my miniature schnauzer. She didn’t know what to think at first but loves it now. It’s so much fun watching her play and keeps her busy! My dog isn’t much of a chewer and loves the movement/chase of this toy. Wouldn’t recommend for big dogs or chewers as there’s a plastic piece that can come off.
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Reviewed in the United States on January 9, 2026
★★★★★ 1
I stops working & doesn't recharge
Color: blue
I just recieved this yesterday 5-23-2026. My new puppy loves it. But after it stopped working and I went to recharge it. it just will not recharge. I currently have it still trying to recharge. so I am not sure what to do other than trying to charge it. I may need to look for something else.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Let's play
Color: red&green
My dog loves this toy and he will play it until it dies the noise is fine the material is great the pets love it easy to recharge and keep your pet busy for a long time so good I had to buy a second set
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Reviewed in the United States on June 12, 2026
★★★★★ 3
Nice Idea But Won't Last With A Frenchie
Color: orange & blue, Color: orange & blue
My dogs loved the balls, however, withing 30 minutes, they were in pieces. Be careful because these parts can become choking hazards. Maybe they should try to make them a bit more sturdy, then I would buy again. Wish I could give them more stars because I liked them and the dogs did too.
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Reviewed in the United States on June 3, 2026
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