SKU: 5658925565

VALVE SPRING KIT RB26DETT TYPE-B (TA304A-NS05B)

Sale price$218.70 Regular price$243.00
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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12

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Description

VALVE SPRING KIT RB26DETT TYPE-B (TA304A-NS05B)High quality designed springs is required to transfer the exact movement of the camshaft to the valves at high engine speeds on high performance engines. The TOMEI products are always engineered with precision in mind to suit the user's needs. So with this in mind careful choices in material selection is made with surface coating and other technologies. Then the pre production products are put through an extensive testing program for checking

High quality designed springs is required to transfer the exact movement of the camshaft to the valves at high engine speeds on high performance engines. The TOMEI products are always engineered with precision in mind to suit the user's needs. So with this in mind careful choices in material selection is made with surface coating and other technologies. Then the pre-production products are put through an extensive testing program for checking durability, quality and performance. We spend time and money to help you save your valuable time and money.

Features:

  • Multi Coil Unequal Pitch Springs- By combining several steps of spring rates into the one spring and vibration frequency becomes amazingly high. This greatly minimizes resonance and the chances of surging.
  • Advanced Oil Tempered Chromium-silicone Alloy Steel Core- Oil tempered chromium-silicone alloy steel wire is used which is considered to be the best material for springs for performance applications and evolved it even further. Combined with a new optimized design, not only did we make it tougher, we also succeeded in suppressing valve jumps or bounce even when raising the engines speeds RPM limit.
  • Nitriding- The surface treatment method for making nitrogen permeates the spring and gives it large surface compression repulsion. This method was chosen to raise the fatigue limit to suit the demands or running high lift camshafts. The dangers of spring failure is greatly reduced with the 1.5 times increase in the springs fatigue limit with the combined use of Oil tempered chromium-silicone alloy steel wire and Nitriding. This is how our valve springs are suitable for use on extreme engine speed conditions of super-high revs exceeding 10,000 RPM which had not been previously possible with high lift camshafts.
  • Shot Peening-A process that strikes many small steel balls onto the surface of the spring at high speeds is made to enhance the surface of the spring to raise its fatigue limit. Although it has been carried out earlier during the manufacturing process.
  • Warm Setting- The process that is adding higher loads beyond the actual limits to the highly heated spring. This will modify its shape and keep it permanently fixed. We succeeded in securing the highest performance over a long period of time while preventing sagging.
  • Oval Wire- Using highly durable oval wire allows the valve springs to compress even further whilst still retaining sufficient force. Compatible with many high lift camshafts, these springs provide reliable performance even under load at higher RPMs. Oval wire valve springs feature greater compression than regular valve springs, allowing them to work with a wider range of 'lift' settings. This makes them compatible with both stock AND aftermarket high lift camshafts. (VR38/VQ35/KA24/4G63/4B11/G4KF)
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: 5658925565

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4.7 ★★★★★
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K 8bro
Louisville, US
★★★★★ 4
Fit over a rather large bunion!
Size: 13 Wide, Color: Mocha Grainy Leather
Very comfortable…didn’t pinch toe bed. Attractive!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2026
W
Verified Purchase
William J Becker Sr
Cuba, US
★★★★★ 5
Sleek and classy loafer
Size: 10.5, Color: Black
Was skeptical on this purchase but I have to say, well worth it. Not super expensive but very comfortable. Wears well for summer dress attire for taking your lady out for a dinner or show. Casual yet classy. Not a bad buy.
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Reviewed in the United States on March 14, 2026
M
Verified Purchase
Mar Ronquillo
Houston, US
★★★★★ 3
I wanted to love these
Size: 9, Color: Black Leather
These are very good looking in person, especially the buckles and the pop of red on black. Alas, I have another pair of Marc Joseph shoes to compare comfort and fit, and this pair simply hurts my feet.
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Reviewed in the United States on May 31, 2026
A
Verified Purchase
Amazon Customer
Lake Worth, US
★★★★★ 5
Great shoes
Size: 12, Color: Black
These are great. We buy them again and again
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Reviewed in the United States on May 4, 2026
R
Verified Purchase
racheli kuber
San Leandro, US
★★★★★ 1
very poor quality
Size: 14, Color: Black
they are a peice of garbage, within about a month since i started wearing them the outer material started pealing off within two months the upper separated from the soles so i had to go to a shoemaker to sew them back together, within some few months the insoles completely wore out rendering the shoes unwearable, now mind you that i do not abuse shoes but use them in a normal office oriented enviorment, i will for sure not be buying these shoes again
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Reviewed in the United States on May 25, 2026

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