Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 29 - Jul 4
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Flashcal for GM + Amp'd 2.0 KitThe Flashcal for Truck and Amp'd 2. 0 Throttle Sensitivity Booster kit for GM trucks offers quick, meaningful, and market leading features that consumers love. Adjust for aftermarket tire and gear adjustments with Flashcal and then wake up that laggy gas pedal feeling with the Amp'd 2. 0 Throttle Booster together in one kit. Enjoy a seamless package for your GM gas truck that creates extraordinary value and savings. Install is easy, the price is
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
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.1 ★★★★★
Based on 782 reviews
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Product Reviews
★★★★★ 5
Best socks!
Size: Medium, Color: Blue
I love these socks! They last for years and they fit so nicely on my feet. I love that I can wear the in tennis shoes or wool boots and they never move!
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Reviewed in the United States on October 21, 2025
★★★★★ 1
TOO SMALL
Size: Medium, Color: Blue
Nice socks, but they are way too small. Says they fit size 6 - 10. I kept 3 ( I wear size 8) and gave 3 to my daughter (size 8.5). We both agreed that they were just too small.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Style and comfort
Size: Medium, Color: Black
Exactly what I was looking for. Style and sock thickness and comfort.
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Reviewed in the United States on December 14, 2025
★★★★★ 5
Comfortable
Size: Medium, Color: Blue
So comfortable! They stay up perfectly love love love
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Reviewed in the United States on December 7, 2025
★★★★★ 5
Finally found a good set again.
Size: X-Large, Color: (001) Black / Black / Castlerock
I’m picky on socks, any they always have to be Under Amour. These are top notch, super padded but also temperature regulating, feet don’t sweat when wearing, and I can tell in the winter they’ll stay the right temperature. They also fit great. Purchasing more.
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Reviewed in the United States on May 6, 2026
