F4 Calipers

Marsoni

M251S

$279.78

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

F4 CalipersOur flagship caliper for oval track and off road use. The TBMs F4 caliper utilizes forged outer halves, heat treated center sections and our patented fluid transfer system to create the quickest, most rigid zero drag caliper available today. Championships are won with F4 calipers. Typical Applications: Asphalt Late Model and Dirt Late Model, Asphalt Sprint & Midget, Dirt sprint & Midget, Asphalt Modified, Dirt Modified, Monster Truck.

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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.
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Runs much larger than I expected. I am 5’4”& 136 pounds. Usually wear a medium or large in some knit tops. So I need to stitch the side seams in hopes it will fit better. I like the weight and softness of the fabric, but really disappointed in the too large armholes. Unwearable for me until I can sew new side seams.

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Reviewed in the United States on February 11, 2026

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Shopper

Lexington, US

★★★★★ 5

Versatility simple top

Size: X-Large, Color: White

Comfortable and well made top. Simple but versatile dress it up or casual, this top is a basic much needed wardrobe addition.

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Reviewed in the United States on February 11, 2026

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Hart Smith

Lowell, US

★★★★★ 5

Great looking Cotton tank

Size: Small, Color: White

Love this tshirt. Have worn but not washed yet. So will add when I know if it shrinks

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Reviewed in the United States on February 8, 2026

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thunderkitten

Charlottesville, US

★★★★★ 1

I wouldn’t call it a ribbed shirt if it’s almost see through

Size: Medium, Color: Black

Cheap thin looking fabric returned it

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Reviewed in the United States on February 13, 2026

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Carnegie, US

★★★★★ 3

Runs large with gaping arm holes.

Size: Large, Color: White

This runs extra large and the arm holes are gaping. You can see your undergarments through the arm holes. I am hoping that the shirt shrinks in the wash.

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Reviewed in the United States on January 17, 2026