MIN4020 Fenders – Designed to fit a 52”-54” tandem axle spread with 22.5” or 24.5” wide-base tires.


For pricing and availability, click ‘Buy Now’ and select your fender color options within the selector tool. Brackets are sold separately.




  • The MIN4020 is designed to fit wide-base tires on tandem axle tractors or trailers with 52”- 54” axel spacing (MINTR4020 is also available for 48” axle spacing commonly found on rear of tank trailers).
  • The MIN 4020 set consists of 4 pieces (4-PM4021 fender sections).
  •  The total weight of the MIN4020 fender kit is less than 32 lbs.
  • *Bracket kits are sold separately*

MIN4020 Super Single Fender Set

The MIN4020 Poly Fender is manufactured using a proprietary material and thermoformed using proprietary technology. Designed with a unique outer lip, Minimizer fenders provide superior control of spray and debris off the tires.  That means clean, damage-free freight and a safer environment for you and other drivers on the road.  When dented or crushed they bounce back into shape. The material is extremely durable, impervious to salt and corrosion, and can withstand temperatures ranging from -100º F to 197º F.

Minimizer never stops innovating. They go head-to-head with shiny metal fenders that bend and break. You get the remarkable shine and reflection of a metal fender combined with the durability and advantages of the standard Minimizer Poly Fenders. Minimizer fenders are also offered in a unique carbon fiber look! This new look adds a distinctive style to any truck and trailer.

Is weight a factor for you?  Minimizer offers the lightest truck fenders on the market!  A lighter fender can mean better fuel mileage, performance and efficiency.  You can carry more payload with lighter equipment.  That means a return on investment!  And since the fenders come with a lifetime guarantee….that means an even bigger return on investment.  Do you want to calculate your ROI?  Check out our ROI Calculator.

Not convinced yet?  Check out the ‘Proving Grounds’ video to see the abuse these fenders are designed to withstand.  You can also watch the ‘Spray Suppression’ video that shows how Minimizer Fenders control debris and spray from the tires.  They really are that good.

The MIN4020 fenders are designed to fit wide-base tires on tandem axle tractors or trailers as a half or tandem fender.  The MIN4020 set consists of 4 pieces (4-PM4021 fender sections).  The total weight of the MIN4020 fender kit is less than 42 lbs.

Minimizer semi truck and trailer fenders have the strongest warranty in the heavy truck industry.  If you haven’t registered your product for warranty purposes, do so now.
Fender warranties vary slightly by product finish.  For most of our standard fender products Minimizer offers a lifetime guarantee.  For mirror finish and other special finish fenders the warranty is industry-leading, but not lifetime.  See warranty section of this website for specific details for this product.

Each fender type installs with slight variations, but the basic fender installation process is nicely demonstrated in this video.  This video covers fender and truck chassis preparation; leveling of the fender over the wheel and the actual securement of the fender to the bracket.

MIN4020 – Set of fenders
103594 – Black
103603 – Carbon Fiber
103599 – Diamond Plate Black
103600 – Diamond Plate Silver
103595 – Galvanized Color
103598 – Green
103602 – Liquid Platium
103596 – Red
103601 – Paintable
103597 – White
103604 – Silver Mirror Finish
103605 – Smoky Black Mirror Finish
PM4021 – Fenders by piece
100196 – Black
103374 – Carbon Fiber
103371 – Diamond Plate Black
103372 – Diamond Plate Silver
103367 – Galvanized Color
103370 – Green
103375 – Liquid Platium
103368 – Red
103373 – Paintable
103369 – White
103376 – Silver Mirror Finish
103377 – Smoky Black Mirror Finish

Additional information

Color Options

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