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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Supertech Performance Dual Valve Springs SPR-H100DRType: Dual Spring OutSpr. OD: 30. 2mm OutSpr. ID: 22. 2mm InnSpr. OD: 22. 2mm InnSpr. ID: 16. 8mm Press. Seat: 85 @ 33. 5 Press. Open: 266 @ 14 Max Lift: 15mm Coil Bind: 18. 5mm Rate: 12. 9mm Retainer: RET K20A2 T2 + SS 3011 3+ SEAT H1020DS Engines Acura Base 4cyl 2. 0l K20A3 Acura Base 4cyl 2. 4l K24A2 Acura Base 4cyl 2. 4l K24Z3 Acura Gs r 4cyl 1. 7l B17A1 Acura Gs r 4cyl 1. 8l B18C1 Acura Special Edition 4cyl 2. 4l K24Z3 Acura Type R 4cyl 1. 8l
- Type: Dual Spring
- OutSpr.OD: 30.2mm
- OutSpr.ID: 22.2mm
- InnSpr.OD: 22.2mm
- InnSpr.ID: 16.8mm
- Press.Seat: 85 @ 33.5
- Press.Open: 266 @ 14
- Max Lift: 15mm
- Coil Bind: 18.5mm
- Rate: 12.9mm
- Retainer: RET-K20A2/T2 + SS-3011-3+ SEAT-H1020DS
Engines
Acura - Base 4cyl 2.0l K20A3
Acura - Base 4cyl 2.4l K24A2
Acura - Base 4cyl 2.4l K24Z3
Acura - Gs-r 4cyl 1.7l B17A1
Acura - Gs-r 4cyl 1.8l B18C1
Acura - Special Edition 4cyl 2.4l K24Z3
Acura - Type R 4cyl 1.8l B18C5
Acura - Type-s 4cyl 2.0l K20A2
Acura - Type-s 4cyl 2.0l K20Z1
Honda - SI 4cyl 1.6l B16A2
Honda - Vtec 4cyl 1.6l B16A2
Honda - Vtec 4cyl 1.6l B16A3
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
4.4 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
Fit well at my size
Size: XX-Large, Color: White
Fit well at my size. Good shirt
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
★★★★★ 5
Good
Size: XX-Large, Color: Black
Good material and true to size
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
★★★★★ 5
Great Quality
Size: Large, Color: Light Blue
Very nice
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
★★★★★ 3
Nice shirt, odd fit
Size: X-Large, Color: Dark Grey, Size: X-Large, Color: Dark Grey
This shirt looks and feels very nice, and there's no weird stitching or loose threads, but the fit was a little off. It was a little short on my husband who is 6'1", but if he stands with his hands down it doesn't really LOOK too short. It's when he raises his arms for anything that it seems weirdly tight across his the chest and it pulls the hem of the shirt up quite a lot. This could just be a body type thing, but he doesn't have that issue in other shirts the same size and style. It's a shame because the shirt itself seems really nice.
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Reviewed in the United States on February 7, 2026
★★★★★ 5
Perfect
Size: Medium, Color: Black
Perfect fit, great material
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026