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Description
Universal 3.75" ID Coil Springs (KINSPR375-16-700)King 3. 75 inch ID coil springs are precision manufactured for performance and off road suspension applications. Wound from high tensile chrome silicon wire, these springs are developed through extensive real world testing to deliver consistent spring rates and reliable performance. Closed and ground ends ensure the spring sits flat and deflects true under load. Built for durability and long service life in demanding conditions. Features 3. 75 inch
King 3.75 inch ID coil springs are precision manufactured for performance and off-road suspension applications. Wound from high tensile chrome silicon wire, these springs are developed through extensive real world testing to deliver consistent spring rates and reliable performance. Closed and ground ends ensure the spring sits flat and deflects true under load. Built for durability and long service life in demanding conditions.
Features
- 3.75 inch inside diameter design
- Manufactured from high tensile chrome silicon wire
- Closed and ground ends for proper seating and true deflection
- Developed through extensive real world testing
- Designed for off-road and performance suspension systems
Specs
- Inside Diameter: 3.75 in
- Spring Length: 16 in
- Spring Rate: 700
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
4.1 ★★★★★
Based on 2204 reviews
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Product Reviews
★★★★★ 5
Brown skin approved!
Size: 6 Ounce (Pack of 1), Size: 6 Ounce (Pack of 1)
Does not leave a white cast, feels very light on the skin. Scanned on Yuka and was a 86/100 green zone! It’s so hard to find a sunscreen that isn’t trying to poison you, scanned all the sunscreen at Walmart and were rated a 1/100 through 6/100. Which brought me to Amazon. Thinksport has my vote on goodness and healthiness, would buy again!
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Reviewed in the United States on May 29, 2026
★★★★★ 5
My favorite... And I'm picky.
Size: 3 Ounce (Pack of 1)
I've become a little obsessed with sunscreen over the last past 5 years. I have olive skin and developed melasma after my first pregnancy. I learned the hard way that chemical sunscreens don't help if you have melasma - and they actually make the dark spots even worse. Also the active ingredients in chemical sunscreens (like Oxybenzone and Octinoxate) are absorbed by your skin, and may cause allergies, hormonal imbalance and be toxic overtime. After learning that, I started wearing only mineral sunscreen (active ingredient is zinc and/or titanium dioxide). These are not absorbed and works by creating a physical barrier that reflects the sun (some studies suggest that some nanoparticles of zinc may be absorbed by your skin, so to be really, really safe you should look for non-nano particles).
After trying a few brands, I realized the sunscreens with only zinc in their formulas worked better than the blends with titanium dioxide, but this is just my personal preference I guess. And the higher the percentage of zinc, the better.
Most pure mineral sunscreens out there are 10-ish % zinc, SPF 30, 40 min water resistant - which is ok.
Thinksport goes beyond that: It's 20% non-nano zinc, SPF 50+, 80 min water resistant. It really can't get any better than that!
The lotion is not extremely thick when compared to other sunscreens I've tried and I find it pretty easy to apply. As every zinc sunscreen, it does leave a little fine white cast, but honestly Thinksport is not bad at all! It smells nice, lightly citrusy - and the smell vanishes soon. And, it's not overpriced.
Best I've tried so far.
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Reviewed in the United States on April 15, 2016
★★★★★ 3
Works but will Dry Out Your Skin
Size: 6 Ounce (Pack of 1)
I am a swim instructor at an outdoor pool and this stuff DOES work. I can apply it at the beginning of a 5 hour shift and while I have experienced light tanning it has protected against burning completely without reapplication.
The white cast is significant though I don't mind it aesthetically, I know its there for protection . It does rub off on things though so consider yourself warned.
Major Con: it is incredibly drying, and the soap needed to scrub it off is A LOT. That coupled with chlorine is a lot for my skin . Still on my sunscreen journey.
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Reviewed in the United States on May 4, 2026
★★★★★ 5
I couldn’t put this book down!!
Format: Paperback
I couldn’t put this book down! My daughter & I stayed in a bed-n- breakfast in Lochcarran on our trip to Scotland right before the COVID pandemic. Not only is the story a fun cozy, whodunnit, but I could visualize the geography while reading. I love the Scottish Highlands & Dee describes them perfectly in this book. Can’t wait to read the next book..it should arrive today!!
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Reviewed in the United States on April 6, 2026
★★★★★ 4
Good book
Format: Audiobook
Book was interesting but had a hard time with the Scottish accent. Plus I have hearing problems so that may have been part of the issue too.
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Reviewed in the United States on July 13, 2025