SKU: SKU: T482 20 GMC2500/3500 BLK/BLK+ FTC-GMC20
Please factor in 15-30 business days for processing and assembly.
WHAT'S INCLUDED:
Each RokBlokz mud flap set for the 5th generation Sierra 2500/3500 HD comes with 4 Flaps (Front and Rear), ROKBLOKZ Fender Trim cap kit, stainless steel & rust-resistant mounting hardware and instructions to fit factory hole locations.
WHAT IT FITS:
2020+ 5th Gen GMC Sierra 2500HD / 3500HD including AT4, Denali, Denali Ultimate, Pro, SLE, SLT trim levels.
DOESN'T FIT:
Not Confirmed for the GMC Sierra 2500 AT4X AEV Edition
Chevrolet Silverado 1500 or GMC Sierra 1500
Any Chevrolet models or previous generations of GMC HD Trucks
Any other GMC Model or truck
2 STYLES TO CHOOSE FROM:
-RALLY FLAPS were designed for those who like to keep a stock wheel set up but want some paint protection. If your tires rub, you will need our hi clearance step-back kit.SEEN ON THE TRUCK IN THE PHOTOS.
-HIGH CLEARANCE STEP-BACK FLAPSmount inside the wheel well and step back past the fenderfor those who run lifts, larger tires and/or higher offset wheels that poke past the fenders and are tight on space inside the wheel well. (Coming Soon)
Please note that this kit was designed on a stock vehicle. When modifying fenders, wheels or suspension, you may have to modify the flaps to work with those changes. Please email us before ordering if you have any questions.
COLOR OPTIONS:
RokBlokz Mud Flaps are available in BLACK, RED, YELLOW, GREY, DEEP BLUE, BRIGHT BLUE, ORANGE, LIME GREEN, OLIVE DRAB, PINK, TAN, and DEEP PURPLE. Colors other than Black are considered Custom as they are made to order.
We are constantly making small improvements to our products, so yours might be a little different from what you see in photos and videos.
Your 2020+ GMC Sierra 2500HD & 3500HD is built for tough jobs and rugged adventures, but its large, aggressive tires can kick up mud, rocks, and road debris that damage your truck’s paint and undercarriage. The RokBlokz Mud Flap Kit offers the perfect solution, delivering unmatched protection and durability while enhancing your truck’s aggressive stance.
Unlike traditional rubber or plastic mud flaps, Rokblokz flaps are CNC laser-cut from a proprietary polymer blend, offering an ideal balance of flexibility, rigidity, and impact resistance. They won’t crack in freezing temperatures, warp in extreme heat, or break under stress—making them perfect for off-road trails, heavy-duty towing, and daily driving alike.
To complement the Sierra’s bold design, this kit includes the RokBlokz Fender Trim Cap, a precision-fit piece designed to replace the OEM splash guard trim. This addition creates a seamless, polished look while ensuring your truck maintains its factory lines and aerodynamics.
✔ Durable & Flexible Material – Resists cracking, warping, and fading
✔ Enhanced Protection – Blocks rocks, mud, and road spray from damaging your truck
✔ Sleek Fender Trim Cap – Provides a clean, finished look after removing OEM splash guard trim
✔ Easy Installation – Uses factory mounting points for a hassle-free setup
✔ Built for Any Environment – Performs in extreme cold, heat, and rough terrain
✔ Made in the USA – Designed and manufactured for top-tier quality
Whether you're hauling heavy loads, exploring backcountry trails, or cruising the highway, RokBlokz Mud Flaps are designed to keep your Sierra 2500HD & 3500HD cleaner and better protected. Engineered for those who demand both function and style, these flaps ensure your truck looks great and stays shielded from road hazards in any condition.
Upgrade your Sierra with RokBlokz Mud Flaps & Fender Trim Cap today! Order now and drive with confidence.
At RokBlokz, we’re always looking for vehicles in or near Provo, UT to help us refine and perfect our mud flap designs. If you’re local and want to see if your vehicle qualifies, check out our list of needed models here. Participating owners receive special perks and the chance to be part of our design process!