SKU: 57425751787

Forge Motorsport - Large Dump Valve Spring (Single)

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Description

Forge Motorsport - Large Dump Valve Spring (Single)****Please not the size of your springs and compare them to the above photo to ensure you order correctly**** Now you can fine tune your Blow Off Diverter Valve to the exact needs of your engine with this complete tuning kit. If you are finding that the valve is dumping more than required, or if you are losing boost pressure it is normally an indication that a stronger spring is required. Alternatively, if the valve is failing to dump it may be


****Please not the size of your springs and compare them to the above photo to ensure you order correctly****

 

Now you can fine tune your Blow Off/Diverter Valve to the exact needs of your engine with this complete tuning kit.

If you are finding that the valve is dumping more than required, or if you are losing boost pressure it is normally an indication that a stronger spring is required. Alternatively, if the valve is failing to dump it may be necessary to install a weaker spring.

Please note that fitting a stronger spring into a valve will not increase boost pressure, unless existing pressure is being lost. Failure to allow the valve to operate by installing a spring which is too strong, may cause damage to the turbocharger.

Please also note that the red coded springs should not be installed in the DVR or DV007 diaphragm valves. 

Valve Spring color coding: 
Green - 5-15 PSI
Yellow - 15-23 PSI
Blue - 23-30 PSI
Red - 30 + PSI
*The above figures are estimates only and should only be considered as a guideline*

Note: Serious or fatal damage may occur to the engine and associated components if this product is incorrectly matched to the individual engine requirements. Forge Motorsport nor any of it’s authorized distributors can assume any responsibility for any adverse effects resulting from the installation of this product. 

Please contact us if you are uncertain whether this kit is suitable for your valve.

*Please Note - The colours of the springs illustrated may differ to what you receive. All spring kits are brand new but are not sprayed. Colour is used as an identifier*

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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
SKU: 57425751787

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4.4 ★★★★★
Based on 2381 reviews
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S
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Steve
Phoenix, US
★★★★★ 5
quality fabric and custom fit
Size: Large, Color: Cerise,orange,yellow,light Blue
excellent fit and fabric. This is my second order of this product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 25, 2026
S
Verified Purchase
Safety Guy
Natrona Heights, US
★★★★★ 5
Good fitting support !
Size: Medium, Color: White
Just what the man needed. Very good contoured support. No jostling. Not a loose potato sack after an hour of wearing this. Highly recommended. Compare? Hanes, for example. Even the Jockey brand. Put those on, they're tight fitting, seemingly supportive. But they're not. They aren't contoured to fit. That's the whole idea. Contoured, to fit. And stay fitted. The trunk type, just like this wirarpa, and in half an hour it's loose loose loose fitting. A potato sack. No support. No support at all. That's not what a trunk brief is supposed to do. It's supposed to support, give comfort and confidence, stay in place feeling. Assuredness. And this wirarpa Mens Trunk does the job ! Wash and wear and wash and wear. Stays in shape, never gets stretched out and loose, for the fit.
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Reviewed in the United States on May 29, 2024
A
Verified Purchase
Aiden
Phoenix, US
★★★★★ 5
Very Hard to Review. (But he gave it a 5????)
Size: Large, Color: White
This is more of a personal opinion I didn't wanna insult the vendor by rating it anything other than a five or four. Qualities is excellent. It's a very comfortable. It looks nice. The waist and height ratio is accurate and very good for the money value wise you get a decent amount of high-quality underwear. The best part is that it holds his shape and very comfortable. I'll keep the simple I rated a five because it's high-quality material very good construction and I've used this namebrand in the past before but for their cotton so I know they build very quality products. However, the material for me is overly too soft. This isn't necessarily a bad thing its the type of material (I've had the same type in shirts). This is more personal. When you're wearing the same material it's not noticeable because they blend in feeling wise the same.: however, this material type I've had in a T-shirt before. Very smooth very comfortable feels elegant but it becomes very noticeable on the skin that it's not the same material as the other clothing. Jeans/cotton etc let's say you're wearing cotton shorts. It stands out almost like a different layer of clothing, which I don't like the feeling of not being able to blend in with the rest of the clothing. This isn't me strictly being picking anybody who's ever worn different type of materials, there's a double feeling to it that some people may find annoying. Of course, if everything you're wearing is the same type of material bamboo type it would blend in better. But for me, it just stood out too much being used on cotton or say board shorts. It feels like something you would use with the same material/silk or for sleeping, but even then it becomes noticeable with cotton sleep shorts. I didn't return mine. I kept it, but I'm no longer using it.
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Reviewed in the United States on April 30, 2025
J
Verified Purchase
Jay
Cuba, US
★★★★★ 5
My search is over
Size: Medium, Color: Black
Every few years I have to conduct an underwear search because my existing pairs are failing and the same make/model is no longer available. This year I tried several options until I found these. They are a good length, stopping at the upper thigh. They are comfortable and the elastic is tight enough to stay in place but not cut off my circulation.
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Reviewed in the United States on December 30, 2025
R
Verified Purchase
Ramon Cervantes
Carnegie, US
★★★★★ 3
Wirapa is a Bad Choice
Size: Large, Color: Black 01
Right size wrong fit ugh uncomfortable never buying these again i should have known better
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Reviewed in the United States on April 19, 2026

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