SKU: 20117408216

4Piston Racing Advanced Performance RACE Valve Spring Kit - K-Series

Sale price$358.88 Regular price$398.75
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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

4Piston Racing Advanced Performance RACE Valve Spring Kit - K-Series4Piston Racing is proud to introduce a superior valve spring at a competitive price point. Many of the K Series valve springs currently on the market were developed so long ago that they did not consider the RPM range and camshaft size of today's Honda K Series performance engines. 4Piston Racing has developed this valve spring kit with high purity large diameter wire so that you can run any of the popular camshafts on the market and operate the

4Piston Racing is proud to introduce a superior valve spring at a competitive price point.  Many of the K-Series valve springs currently on the market were developed so long ago that they did not consider the RPM range and camshaft size of today's Honda K-Series performance engines.

4Piston Racing has developed this valve spring kit with high purity large diameter wire so that you can run any of the popular camshafts on the market and operate the engine at higher RPM without the risk of valve float. It features their nitriding treatment and Pro Polish to deliver a motorsport grade spring that will withstand rigorous endurance applications. The retainers are a premium Titanium manufactured right here on their Mazak SYNCREX Swiss lathe to tolerances that only this type of premium equipment can achieve. You will be happy with the packaging and presentation, and even happier with the performance and longevity. This is the spring that you will find in 4Piston Racing's highest level endurance race engines.

100% MADE IN USA

Seat Pressure - 120 lbs.
Max Lift - .650" (16.5mm)

**4P has had some questions and comments regarding the higher seat pressure of these as opposed to other lower pressure offerings on the market. The whole reason they made this product was because those lower pressure springs are insufficient to control the valve. 4P's higher pressure spring is made to make your valvetrain last LONGER.**

The Kit Includes the Following:

  • 16 Pro Polished Dual Valve Springs
  • 16 Spring Seat Locators
  • 16 Titanium Retainers

You can use any 7 degree valve lock (keeper) with these retainers. OEM, Ferrea, Supertech, or 4P.

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: 20117408216

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Bibianne
Phoenix, US
★★★★★ 5
Satisfied
I’ve been hearing all about the benefits of snail mucin for skin care, and now after trying Jasclair snail mucin hydrating serum for post derma-planing, it is easy to understand what all the hype is about when it comes to snail mucin. After derma-planing, it is super hydrating and soothing to put on, and my skin retains that moisture long after. But although it’s great for after derma-planing, it works just as well as a daily serum. For anyone wondering - yes it is a little bit slimy, but it’s more just out of the ordinary for what one is used to with a serum, not anything excessive. The smooth hydrated texture of my skin afterwards it’s perfect for makeup application and this serum works well underneath my make up, at least in part because it absorbs so well. A little bit goes a long way and this is now a must have as part of my beauty routine. I would highly recommend this snail serum after derma-planing and overall skin rejuvenation.
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Reviewed in the United States on June 27, 2025
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Audrey Elliott
Boise, US
★★★★★ 5
Great results
Love using this item at night. It’s kind of thick but if put on before bed it is all soaked in by morning. Face is so smooth after using this product before bed. Easy to use and completely clear in color.
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Reviewed in the United States on November 10, 2025
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Maikel Perez barea
Waukegan, US
★★★★★ 5
Ok
The Snail Mucin hydrating serum is soothing and effective, ideal for use after dermabrasion or other skin treatments. It deeply moisturizes, promotes skin healing, and helps reduce redness and irritation. Lightweight and fast-absorbing, it leaves the skin soft, refreshed, and rejuvenated.
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Reviewed in the United States on September 23, 2025
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Brandi
Grantham, US
★★★★★ 5
Skin is so soft
great price and love how soft it makes my skin after derma plane. Easy to use and leaves skin shiny and soft.
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Reviewed in the United States on November 7, 2025
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Robert
Phoenix, US
★★★★★ 5
This stuff is awesome
This stuff is awesome my face is living it
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Reviewed in the United States on January 19, 2026

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