SKU: 73744012585

Supertech Performance SPRK-MM18D 1.8lts Dual Spring kit / [email protected] 16) SPR-TS1015/MI + (16)RET-TS60/MA2 + (16)SEAT-TS/MA18I

Sale price$315.62 Regular price$350.69
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Ships within 48 hours · Estimated delivery Sep 17 - Sep 22

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Description

Supertech Performance SPRK-MM18D 1.8lts Dual Spring kit / [email protected] 16) SPR-TS1015/MI + (16)RET-TS60/MA2 + (16)SEAT-TS/MA18ISupertech Performance SPRK MM18D 1. 8lts Dual Spring kit 74lbs@34. 2mm 16) SPR TS1015 MI + (16)RET TS60 MA2 + (16)SEAT TS MA18I Supertech valve springs are computer designed to ensure smooth harmonics under high RPM and load. The stress levels are kept under control and fatigue is reduced for long durability under extreme conditions. These springs are made of premium Superclean Chrome Silicon Vanadium steel alloy, which is a tough alloy that was

Supertech Performance SPRK-MM18D 1.8lts Dual Spring kit / [email protected] 16) SPR-TS1015/MI + (16)RET-TS60/MA2 + (16)SEAT-TS/MA18I

Supertech valve springs are computer designed to ensure smooth harmonics under high RPM and load. The stress levels are kept under control and fatigue is reduced for long durability under extreme conditions. These springs are made of premium Superclean Chrome Silicon Vanadium steel alloy, which is a tough alloy that was designed for higher performance and durability at high RPM's and memory retention.

Specifications:

  • Outer Spring O.D.: 27.50mm
  • Outer Spring I.D.: 20.00mm
  • Inner Spring O.D.: 20.00mm
  • Inner Spring I.D.: 15.20mm
  • Seat: 74 @ 34.20 (lbs@mm)
  • Open (lift): 177 @ 10.5 (lbs@mm)
  • Max net lift: 13.00mm
  • Coil bind: 20.70mm
  • Rate: 12.10 lbs/mm

Retainer P/N: RET-TS60/MA2 + (16) SEAT-TS/MA18I+OEM (use '97 + Cotters)

Note: This is for a complete set of dual intake and exhaust valve springs, & retainers and spring seats.

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: 73744012585

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Goldie Gold
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Reviewed in the United States on June 6, 2026
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the nicest watch I've used recently
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Reviewed in the United States on April 5, 2026
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D. Jeffrey Eells
Belleville, US
★★★★★ 4
As described..handsome watch
Style: Dress, Color: Two-Tone Gold/ Blue Dial
Christmas gifts my sons will remember..beautiful watch. Easy to adjust the bracelet if you buy the kit..
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Reviewed in the United States on February 9, 2025
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Christopher A. Smith
Bozeman, US
★★★★★ 5
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Absolute great watch. It’s perfect for an every day and situation from work to date night. I had to take out 4 links and now it fits perfectly!
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Reviewed in the United States on July 5, 2025
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Andre S. Palomo
Alexandria, US
★★★★★ 5
Great watch!
Style: Dress, Color: Gold Tone Stainless Steel
BEAUTIFUL WATCH and excellent horology you would expect from Citizen.
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Reviewed in the United States on April 10, 2026

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