BFI C7/C8/4M Billet Aluminum Transmission Mount Insert

BFI C7/C8/4M Billet Aluminum Transmission Mount Insert

Marsoni

M251S

$79.99

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

BFI C7/C8/4M Billet Aluminum Transmission Mount InsertPut more power the the ground with our C7 C8 4M Transmission Mount Insert. This part quickly and easily installs and fills the voids in your factory transmission mount, helping to limit movement and transfer of energy. Effectively this stiffer mount will allow more of your engine's horsepower to make it to the wheels rather than being lost to wasted movement. WHY ALUMINUM? While we have opted for polyurethane as an ideal material for bushings and

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Your BFI C7/C8/4M Billet Aluminum Transmission Mount Insert orders ship within 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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I actually bought a second package before trying the first and do not regret it! These are the most comfortable underwear I've ever owned. The waist fits right and hasn't rolled once!! They're soft, stretchy, not tight and pretty lightweight. My only gripe is they're supposed to be hand washed and dried, which is on me for looking at the price and not the fine print. Won't stop me from buying more, they're that comfy and I recommend highly.

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Reviewed in the United States on May 22, 2026

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Bohogirl

Carnegie, US

★★★★★ 5

All cotton. No swamp butt in this heat

Color: Black&grape Purple&ash Gray&white&pink&beige, Size: Medium

Absolutely love these!! All cotton, breathable and comfortable. A little too high waisted but I was expecting boy shorts not briefs. The front crotch seam is weird but doesn't show. Neither does anything else 😀

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Reviewed in the United States on May 22, 2026

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Lyly

Port Orchard, US

★★★★★ 5

True to description

Color: Black&grape Purple&ash Gray&white&pink&beige, Size: Medium

I loved them, they are very comfortable! I got them medium and they fit perfect! They do come a little small though.

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Reviewed in the United States on May 19, 2026

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juniper

Boise, US

★★★★★ 5

Great product.

Color: Black&grape Purple&ash Gray&white&pink&beige, Size: Large

Fast shipping, nice material, great price and good fit.

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Reviewed in the United States on May 28, 2026

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Ann

Chelsea, US

★★★★★ 5

Most comfortable underwear EVER!

Color: Black&grape Purple&ash Gray&white&pink&beige, Size: X-Large

As close to an actual men’s boxer brief you can get. Soft and stretchy but maintains their shape. The legs aren’t too tight and they don’t roll up and the waist doesn’t roll down. The box says to hand wash but who has time for that? They washed and dried just fine.

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Reviewed in the United States on April 30, 2026