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Mud-Ready & Made For U

Designed specifically for UTVs and ATVs, the new R4 from STI is a massive mud weapon for drivers serious about performance. Some “tractor tire” designs are made literally for tractors, while the STI R4 has U in mind – UTV and ATV, that is.

  • Up to 35 inches tall for UTVs, and as small as 28 for ATVs
  • 8-ply rated radial design
  • Deep lugs: 1.75 inches at center and 2.0 at shoulder
  • Super beefy rim guard
  • 9 inches wide

Check out the details on the R4 product page.

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