Exterior Components› Running Boards, Truck Steps and Components
GrimmSpeed
Grimmspeed 15-21 Subaru WRX/STI Mudflaps - Black w/ Red Lettering
SKU: G00B GRM.1021.1.RED
Beginner — under 30 min
Description
Part #: GRM.1021.1.RED
MIA's Description
Constructed from high-durometer 98A Shore polyurethane, these mudflaps balance flexibility and strength, ensuring they won't crack, warp, or fade. They are paired with 304 stainless steel brackets and corrosion-resistant Magni-coated hardware for long-term durability. The GrimmSpeed logo is featured on each flap, with options for red or white lettering.
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 GRM.1021.1.RED |
Videos
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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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