GrimmSpeed 04-21 Subaru STI (6MT) / 02-24 Subaru WRX (5MT/6MT) 75A Street Transmission Mount

GrimmSpeed 04-21 Subaru STI (6MT) / 02-24 Subaru WRX (5MT/6MT) 75A Street Transmission Mount

Marsoni

M251S

$124.50

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

GrimmSpeed 04-21 Subaru STI (6MT) / 02-24 Subaru WRX (5MT/6MT) 75A Street Transmission MountSKU: GRM123041STR GrimmSpeed Street Transmission Mount All Subaru 5MT and 6MT Lock Down Your Drivetrain for More Predictable Shifting! OEM chassis mounts are usually designed with the top priority going to low NVH (noise, vibrations, and harshness) and low cost. This means that there is a huge opportunity when you are trying to increase performance. Made to compliment your GrimmSpeed Pitch Stop Mount, our Transmission Mounts will dramatically stiffen

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Your GrimmSpeed 04-21 Subaru STI (6MT) / 02-24 Subaru WRX (5MT/6MT) 75A Street Transmission Mount orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

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You'll receive a tracking link by email once your GrimmSpeed 04-21 Subaru STI (6MT) / 02-24 Subaru WRX (5MT/6MT) 75A Street Transmission Mount ships.

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Exchange/Return Notes

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A solidly constructed jig used for easily creating either a 5mm or 1/4" shelf pin holes. Mark your control line and place the jig on it while using two thumb screws that act as both a clamp and edge guide for perfectly aligned holes. Various thumb screw holes allows for holes that are closer to the edge of your work or for holes further in from the edge.

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Reviewed in the United States on February 18, 2026

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Juicer

Whiting, US

★★★★★ 5

Good product

Size: 11 Holes

Works well for the must part. I ended up buying a different style bit collar stop because the one provided wasn't solid enough for me. Might be a personal preference

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Reviewed in the United States on January 7, 2026

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whodg

Lexington, US

★★★★★ 5

Awesome tool

Very easy to use, only issue I had was the location pin was a bit tight. Chucked it in the drill and polished it up with a scotch-brite and it worked perfectly. The end to end symmetry made it easy to move from one side to the other. Good price as well!

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Reviewed in the United States on September 24, 2024

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Road Warrior Ray

New York, US

★★★★★ 4

Excellent 11 hole jig

Size: 11 Holes

This jig worked excellently. It doesn't have any instructions, so I watched the video of it. I set it up the way the video showed, and I got decent results. Deducted a star since no instructions.

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Reviewed in the United States on April 18, 2026