Promax FC-1 Seat Post Clamp

Marsoni

M251S

$17.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Promax FC-1 Seat Post ClampThe Promax FC 1 Seat Post Clamp is cold forged and CNC machined from 6061 T6 aluminum alloy, the FC 1 is tough, lightweight (A 31. 8 clamp weighs about 16 grams) and good looking. For those that don't need to raise drop their seat height every lap, we respect you. Available in 31. 8 and 25. 4 sizes in anodized red, blue, gold and black with laser etched graphics and stainless steel hardware. Weights: 25. 4mm PX SC130F254: 14 grams 31. 8mm PX

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Fast: 2-3 business days
Express: 1-2 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

It’s all metal! Even the arm that holds the phone!!! All metal!!!!! No cheap plastic! You can drill or clean and stick. 2 for mounting. No more breaking air vents and suction cups cheap plastic that falls off the window or rear view mirror holder that blocks your vision. This is definitely worth the money.

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Reviewed in the United States on March 14, 2026

Verified Purchase

Joshua M.

Lake Worth, US

★★★★★ 2

The concept is great, the item is sub par.

Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121

I bought this for a 2021 Silverado WT thinking I'd be able to screw this into the dash cubby as the adhesive wouldn't servive -50⁰ F Fairbanks winters. Beware, if you own this truck, you have to remove the entire dash assembly to include instrument cluster and infotainment system in order to screw this into the cubby. The cubby on this model is actually apart of the entire upper dash panel and cannot be removed separately as the instructions state. I decided I'd give the adhesive pad a try until I bought some self tapping screws but the mount is not contoured like my cubby, therefore it badly rocks. I don't recommend this to anyone with a 2021 Silverado WT unless they want to spend over 3 hours installing this.

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Reviewed in the United States on May 8, 2026

Verified Purchase

Zach Pike

Draper, US

★★★★★ 5

Highly recommend

Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121

Great fit, looks awesome! Very easy to install !

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Reviewed in the United States on May 19, 2026

Verified Purchase