SKU: 94072294966

Supertech Dual Valve Spring Conversion Kit - K-series

Sale price$294.44 Regular price$327.15
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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12

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Description

Supertech Dual Valve Spring Conversion Kit - K-seriesWe've put this complete and custom Supertech valvetrain combo together especially for K series enthusiasts who are looking to upgrade their valvetrain. This kit is mainly aimed for K series folks who have factory equipped single valve spring valve train, but is also compatible with K series engines equipped with factory dual valvespring valve train as well. Combo contents Supertech 32pc dual valve spring set (optional spring pressures available)

We've put this complete and custom Supertech valvetrain combo together especially for K-series enthusiasts who are looking to upgrade their valvetrain.

This kit is mainly aimed for K-series folks who have factory equipped single valve spring valve-train, but is also compatible with K-series engines equipped with factory dual valvespring valve train as well.

Combo contents

  • Supertech 32pc dual valve spring set (optional spring pressures available)
  • Supertech 16pc steel spring seats
  • Supertech 16pc titanium retainer set
  • Supertech 32pc keepers (stamped OEM style)

Engine application this combo applies to:

  • K20A (01-10 JDM Civic Type-R & RSX Type-R - dual spring equipped)
  • K20A2 (02-04 RSX Type-S - mid '03-04 single spring equipped)
  • K20Z1 (05-06 RSX Type-S - single spring equipped)
  • K20Z3 (06-11 Civic Si - single spring equipped)
  • K24A2 (04-08 TSX - single spring equipped)
  • F20C/F22C (00-09 S2000  - dual spring equipped)

Please note that none of the factory single-spring valve train (springs, retainers, keepers, and seats) is compatible with a dual-valve spring upgrade.

Supertech Dual Valve Springs
Supertech performance valve springs are made with premium Superclean Chrome Silicon Vanadium Steel Alloy for higher performance and durability. Computer designed to ensure that wire stress levels do not overpass the limits for long durability under extreme conditions and harmonics are well under control.

Supertech Titanium Retainers
Supertech titanium retainers prevent valve float and strength up your valvetrain. Retainers are CNC machined from 6AL4V grade titanium.

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: 94072294966

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Dr. DeeJaye
Cuba, US
★★★★★ 5
Just what I wanted.
Color: Black, Navy Blue, Wine Red, Size: 5X-Large
These may have just become my standard shirt to wear. Feels good whether tucked or out. Drapes well and fits well. So far, I can see it adjust to the different undershirt I may wear. Will probably order another set in other colors and a back up set of the basics because they will get worn a lot.
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Reviewed in the United States on July 17, 2025
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Chloe
Draper, US
★★★★★ 3
Its alright
Color: Black, Size: 5X-Large
True to size per the size chart. The fabric is soft but it it feels cheap to me. It attracts lint but you can brush it off easily so its not the cheapest material I've dealt with. Also, it is opaque (not see through). There is no front/ back indicator either which is indicative of a cheap shirt in my opinion. Would be friendly for tag sensitive people (to stay positive).
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Reviewed in the United States on April 14, 2026
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Amazon Customer
Lake Worth, US
★★★★★ 5
Fit and colors are perfect
Color: Black, White, Apricot, Size: Large
They fit very well, I got them for my husband and he was very excited for the style & fit i am actually going to buy him another pack
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Reviewed in the United States on October 7, 2025
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ChilledOut
Dallas, US
★★★★★ 1
Fuzzballs get wearing once
Color: Black, Size: X-Large
Very smart to wear, but the quality is terrible so after one wash the collar start fraying and fuzzballs start forming. Very disappointing.
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Reviewed in the United States on June 2, 2026
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Me. Myself, and I.
Charlottesville, US
★★★★★ 5
Nice shirt.
Color: Black, Size: XX-Large
Good neck height, not too high, firm neck grip without the choke feel. Clean look when wearing under an open shirt or looks good alone, Soft feel against the skin, and it washes well, no pulling or color fade. semi-form-fitting on the body, but not tight for the size. priced well.
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Reviewed in the United States on May 25, 2026

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