4Piston Racing Advanced Performance RACE Valve Spring Kit - K-Series
SKU: 20117408216

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

Sale price$358.88 Regular price$398.75
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 1112 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
L
Verified Purchase
Lauren
Boise, US
★★★★★ 3
My opinion
Format: Kindle
Let me preface this by saying I really liked the story and the characters however, this book is in desperate need of some sort of editing. It's not misspelled words or formatting, but continuous run on sentences. Redundancies within the sentences. There were a couple of paragraphs that I had to go back and reread 3 or 4 times. Overall, I'd say it was worth the read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2025
A
Verified Purchase
Amazon Customer
Birmingham, US
★★★★★ 5
Beautiful
Format: Kindle
I love omegaverses I had looked at this one multiple times thinking it's just another book about cocky rock star guys that let fame get to their heads and there are parts like that so I wasn't 100% off. I started reading the second book and met the fmc Astraea from the first one,after she had a run in with the aphla from the gym.😁 it gave me the push to stop and read book one first and im so glad I did this book was amazing their was so many characters I fell in love with hoping they will find their happily ever after. the guys were great, the plot was 🎯, and the ending had me 😭😭😭. I was wondering how nate could ever redeem himself, and he did. the last scene with him was sad, but I also felt it was beautiful. thank you to the author for making a beautiful omegaverse book that gave me all the feels. now I'm jumping straight into book two.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2025
E
Verified Purchase
E
Carnegie, US
★★★★★ 4
Knot their Omega
Format: Kindle
It took me a day to really get into the book, there is a lot happening in the beginning of the story. I wish there was more of a time frame because I felt like something’s happened quickly but they were farther away than I thought so that was a little confusing to me. I felt like there was so much happening but also not enough. As for the story itself I enjoyed it, it was different than other OV I’ve read. Bring the tissues, you will need them. They guys were great, I wish we saw more of Kai and Kenjis relationship. As for Nate…… IYKYK. I enjoyed this book, my first from this author and look forward to reading about Kamaris story. Book: ⭐️⭐️⭐️⭐️/5 Spice: 🌶️.5/5
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 24, 2024
M
Verified Purchase
M. Schmitz
Dallas, US
★★★★★ 2
Has Potential, Poorly Executed
Format: Kindle
I really really wanted to enjoy this book and was looking forward to reading it. However there were just one too many convoluted plot points, sentences just did not flow nicely at times, and I was left with a lot of confusion on my end. I think it has the bones of being a great story but seems like it was rushed and I had to push myself to finish the last of the book and was left with an unsatisfying ending. It’s definitely different from other omegaverse novels I’ve read but not for good reasons. I really think it could be great but needs some serious tweaking and editing before I’d read it again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 3, 2025
C
Verified Purchase
Carmen Alicea
Pawtucket, US
★★★★★ 5
Secrets, Seduction, and Rockstars!
Format: Kindle
Rockstars, secrets, and off-the-charts chemistry? Sign me up! Cinder Blaze takes us on a rollercoaster of passion and peril with Knot Their Omega. Blair Vesper, a secret Omega masquerading as an Alpha, strikes a risky deal to tour with Blooming Salvation, a band teetering on the edge of chaos. Enter Icarus Morrigan, the enigmatic manager, and his three complicated and irresistibly sexy rockstars: wild Kenji, icy Kaiser, and fiery Nathaniel. This book delivers steamy Omegaverse drama, sizzling slow-burn romance, and just the right dash of angst. The tension between Blair and the band crackles like electricity onstage, while the societal stakes add depth to the spicy dynamics. Short, sharp, and oh-so-sinful Knot Their Omega will have you hooked from the first note!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 9, 2024

recommand products