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Description
QA1 GM Pro Front Coil-Over System - Double Adj. - 10in x 550lbs/in - Flat Large - AluminumUpgrade your suspension with the QA1 GM Pro Front Coil Over System, designed to deliver superior handling and adjustable performance. This front coil over features double adjustment options, allowing you to fine tune both ride height and damping to suit your driving style and road conditions. The coil spring measures 10 inches in length with a spring rate of 550 pounds per inch, providing the perfect balance between comfort and performance. Crafted
Upgrade your suspension with the QA1 GM Pro Front Coil-Over System, designed to deliver superior handling and adjustable performance. This front coil-over features double adjustment options, allowing you to fine-tune both ride height and damping to suit your driving style and road conditions.The coil spring measures 10 inches in length with a spring rate of 550 pounds per inch, providing the perfect balance between comfort and performance. Crafted from high-quality aluminum, this coil-over system is built to last while also reducing unsprung weight for improved vehicle dynamics.
The flat large design ensures a secure fit and consistent performance under demanding conditions. Whether you are upgrading for street performance, racing, or custom builds, the QA1 Pro Coil ensures reliable, repeatable adjustments for precise suspension tuning.
Perfect for enthusiasts looking to enhance their vehicle’s front suspension with a reputable brand, this coil-over kit offers easy installation and compatibility with common GM setups. Elevate your driving experience with the trusted performance of QA1.
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
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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.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Works very well and holds up over time!
This works really well for drilling out shelf pins! The drill bit that comes with it is a good quality bit, and the holes in the metal block are very strong, The drill bit doesn't even come close to cutting into them. I have drilled about 1000 holes with it so far, and it still works as good as it did when it was brand new! I would definitely recommend this over the plastic ones. It's very easy to use, as well.
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Reviewed in the United States on June 27, 2025
★★★★★ 5
Great item
Size: 9 Holes
Works great Would be nice to have another peg to make sure it stays in line. Just used a drill bit of the same size.
Worth the investment
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Reviewed in the United States on March 4, 2026
★★★★★ 5
Game-Changer for Clean, Accurate Shelf Pin Holes!
This shelf pin jig absolutely delivered on everything I needed — the ease of use was fantastic right out of the box. Once I got the layout aligned, drilling was quick and precise. The accuracy is impressive, with clean, straight holes every time, and the included bits worked like a charm. The design is clever, compact, and durable — the aluminum plate feels premium and makes it easy to keep things straight. I love the versatility too; switching between 5mm and 1/4" bits was fast, and the guide holes are clearly labeled. The size is ideal for cabinets, bookcases, and even tighter spaces where a bulky jig wouldn’t fit. For anyone needing quick, repeatable shelf pin drilling, this jig speeds up the use and keeps your project moving fast without compromising quality. If you're doing any custom shelving or cabinet work, this is a must-have tool that saves time and eliminates guesswork.
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Reviewed in the United States on May 13, 2025
★★★★★ 4
Works well for DIY
Worked well for building bookshelf. Wish it maybe had som little pads on the back as some times it would slide a bit, but if I tightened it more it would dent the wood slightly. Overall very easy to use and worked well for its intended use.
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Reviewed in the United States on January 18, 2026
★★★★★ 5
Solid thick aluminum construction
Size: 9 Holes
Very well made, thick aluminum construction and fully customizable.
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Reviewed in the United States on March 13, 2026