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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22
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Description
SUPERTECH (SPRK-H1005D) VALVE SPRING KIT; DUAL VALVE SPRINGS; SPRINGS: SPR-H1000D; RETAINERS: RET-K20A2/T2Supertech Spring Retainer kits are precision matched sets for a complete valvetrain overhaul. Developed for the performance enthusiast that wants the best the industry has to offer, Supertech Spring Retainer kits are second to none in terms of performance, quality and value. Coil Bind: 20. 7mm Inner Spring (OD ID): 20. 5mm 15. 5mm Max Net Lift: 14. 8mm Outer Spring (OD ID): 29. 65mm 21. 85mm Pressure (Open): 239lbs@12. 5mm Pressure (Seat): 93lbs@35.
Supertech Spring / Retainer kits are precision matched sets for a complete valvetrain overhaul. Developed for the performance enthusiast that wants the best the industry has to offer, Supertech Spring / Retainer kits are second to none in terms of performance, quality and value.
Coil Bind: 20.7mm
Inner Spring (OD/ID): 20.5mm / 15.5mm
Max Net Lift: 14.8mm
Outer Spring (OD/ID): 29.65mm / 21.85mm
Pressure (Open): [email protected]
Pressure (Seat): [email protected]
Rate: 11.5lbs/mm
Inner Spring (OD/ID): 20.5mm / 15.5mm
Max Net Lift: 14.8mm
Outer Spring (OD/ID): 29.65mm / 21.85mm
Pressure (Open): [email protected]
Pressure (Seat): [email protected]
Rate: 11.5lbs/mm
| YEAR | MAKE | MODEL | CYLINDERS | LITERS | FUEL TYPE | FUEL DELIEVERY | ASPIRATION | ENGINE DESIGNATION | NOTES |
| 1997 - 2001 | HONDA | PRELUDE | ALL | ALL | ALL | ALL | ALL | H22A4 | |
| 1993 - 1996 | HONDA | PRELUDE | ALL | ALL | ALL | ALL | ALL | H22A1 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.8 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
really good sheets
Color: Grey, Size: Queen
Very comfortable sheets, cooling feel as well. The sheets don't slide either with the holding straps.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Luxury feel @ half the price!
Color: Grey, Size: Queen
So soft! Omg they are soft & cool and fit snug with the bands around the mattress 😍 they're the perfect thickness to protect your mattress while not feeling like a winter sheet. 20/10! I think I found my new brand 🫶
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Reviewed in the United States on April 28, 2026
★★★★★ 5
It stays tucked
Color: Grey, Size: Queen
It is soft, comfortable and stayed tucked
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Reviewed in the United States on May 26, 2026
★★★★★ 1
Very very hot bed sheet.
Color: Grey, Size: King
This is the hottest bed sheet I have ever had in my life. Washed it, tried it out for a few nights and every single night we were sweating like crazy. Like soaking wet. Even to the point that we thought our AC was broken or something.
Seems to be made good, but it's way to hot to sleep with.
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Smooth and soft
Color: Grey, Size: Queen
Comfortable in current 45F cold weather. It can fit my 10’ thick memory foam mattress. The elastic straps help to fix position.
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Reviewed in the United States on May 15, 2026