Drivetrain› Shifters and Components
GrimmSpeed
GrimmSpeed 04-21 Subaru STI (6MT) / 02-24 Subaru WRX (5MT/6MT) 75A Street Transmission Mount
SKU: G00B 123041STR
Easy — 1–2 hours
Description
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | GrimmSpeed |
| Part Number | G00B 123041STR |
Videos
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Mods To Get 400HP In Your 15-21 WRX (+ Tips & goals)
New Product: GrimmSpeed Pitch Stop Mount
Swapping GrimmSpeed TMIC For FMIC
STI Transmission Swap Review
Torque Solution Pitch Stop Install & Review On My WRX
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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