CarCareTruth Score
Decent, but it's tough on the environment.
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Prices may varyThis product ranks #6 of 9 in Mud Flaps.Three above it ↓
Last reviewed June 1, 2026
TL;DR A universal flat poly-blend thermoplastic flap sold as a single piece, drill-to-fit with no hardware or instructions included. Community-confirmed installs across Toyota Tacoma, Saab 9-5, Honda Fit, Subaru Forester, Toyota Tundra, and BRZ/WRX owners using their own hardware. Thinner gauge than Rally Armor's UR urethane line; bring your own screws and expect to figure out the mounting yourself.
A single universal flat mud flap in poly-blend synthetic thermoplastic, sold individually. No pre-drilled holes, no hardware, no instructions; mounting requires drilling and buyer-sourced fasteners (self-tapping screws, body clips, or Walmart hardware). The flat profile adapts to different wheel wells with positioning, though it does not contour the body line like a vehicle-specific flap. Subaru Forester owners report 5,000 miles through rocks, dirt, and desert with no wear. Community consensus places this as "thinner gauge" than Rally Armor's UR urethane models.
Right pick for owners of vehicles without a Rally Armor vehicle-specific fit, or anyone wanting the Rally Armor look at a budget price point, who can measure, drill, and source their own hardware. The universal flat fit works across a wide range of vehicles when positioned carefully. Skip this if you want a no-drill install or a flap that contours the fender line flush. A vehicle-specific set from Rally Armor's UR line, Husky Liners, or WeatherTech is the better choice for precision fitment and easier installation.
No chemical exposure pathway: poly-blend synthetic thermoplastic passive exterior accessory with no SDS. The product carries an Amazon Prop 65 warning consistent with trace carbon black in the thermoplastic compound; no natural rubber latex or PFAS treatment was confirmed. The flap sheds microplastic particles through road-spray abrasion over its service life; the thinner-gauge material and universal positioning may result in shorter average service life and more frequent replacement than premium contour-molded alternatives. No manufacturer take-back program exists for this category.
The Amazon listing for Rally Armor MF12-BAS Basic Mud Flap with Logo (Universal Fitment, no Hardware) carries a California Prop 65 warning. California requires this warning on a very wide range of manufactured goods — including rubber, vinyl, plastic, and metal automotive parts — whenever trace exposure to any of roughly 900 listed substances (commonly phthalates or heavy metals) is possible, regardless of whether the specific product poses a meaningful health risk. As a passive accessory, Rally Armor MF12-BAS Basic Mud Flap with Logo (Universal Fitment, no Hardware) has no Safety Data Sheet, so there's no chemistry breakdown to translate beyond that.
Marketing copy from Rally Armor, via Amazon. Not editorial.
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