Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 16 - Jun 21
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For Your Every Summer RSVP, with Code: SUMMER15
Description
QA1 MOD Series Front Coilover Kit - Double Adjustable, Large Tapered Flat Spring, 400 lbs/in Rate - 1991-2004 GMC Sonomadon't be limited to adjustments! Completely re valve in minutes with the MOD Series Shock. Designed specifically on your 1991 2004 GMC Sonoma to meet the demands required by today's high performance drag race and handling pro touring cars, QA1's multi patent pending MOD Series shock will transform the way racers respond to changing track conditions and configurations. The key element to this tunability is QuickTune Technology: dry modular valve packs
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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- Delivery to the USA:
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.5 ★★★★★
Based on 810 reviews
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Product Reviews
★★★★★ 1
Unsatisfied
Does not work.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
★★★★★ 5
Lil more pep!
I can tell a difference in my energy level with this product. No problem with sleep quality.
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Reviewed in the United States on January 20, 2025
★★★★★ 4
They work!
They work!
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Reviewed in the United States on October 17, 2025
★★★★★ 5
Perfect Quality.
Format: Hardcover, Format: Hardcover
Cloth bound cover with printed foil design on the front cover. The lettering color ; as well as the picture illustrations, are entirely printed in blue ink. There is a removable price sticker on the back of the book, which it is hard to remove without it leaving glue residue behind, therefore I myself left it as it was. The sprayed edges are also of blue metallic color. Very nice quality book I recommend buying it. My copy of the book had only a very tiny indentation on the edge of the top front cover but hardly anything to make a fuss about.
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Reviewed in the United States on January 23, 2026
★★★★★ 5
Wonderful book
Format: Hardcover
I have given this book as a gift to so many people at times that their lives are taking a turn.
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Reviewed in the United States on March 15, 2026
