Overview
The Fab Fours TF3100-1 is an open fender system in matte black for the 2015–2019 GMC Sierra 1500, Sierra 2500 HD and Sierra 3500 HD. Sold as a set of four under part number FFITF3100-1, it covers front and rear locations and is built for a 40 inch tire with no lift.
The system keeps the truck usable for work while giving it a bold look. The optional fender flares TF3110-1 can be run with or without the system. The design offers a lower center of gravity and an aggressive stance.
Key features
- Built for a 40 inch tire with no lift
- Matte black finish
- Set of four covering front and rear locations
- Modular, with optional flares TF3110-1
- Designed for a lower center of gravity and aggressive stance, per Fab Fours
Before you buy
Open fenders change both the look and the clearance of a truck, so the first step is measuring the space between the tire and the fender at full lock and at full suspension compression. Those measurements matter more than the fender itself when deciding whether a larger tire will work. Fender flares and open fenders are often bought together, so decide early whether the optional flares will be part of the build.
After installation, check the mounting points and fasteners after the first few drives and again after rough trail use. Fender panels can loosen as the body flexes, and inspecting the edges and paint for rubbing marks helps catch a problem early. Touch up any chips in the matte black finish so bare metal does not start to rust.
- Measure tire clearance before ordering
- Check steering travel at full lock
- Re-check fasteners after the first trail runs
Specifications
| Brand | Fab Fours |
|---|---|
| Part number | FFITF3100-1 |
| Quantity | Set of 4 |
| Location | Front and rear |
| Position | Front |
| Color | Matte black |
| Tire size supported | 40 inch tire |
| Fit type | Direct fit |
Vehicle fitment
It fits the 2015–2019 GMC Sierra 1500 in AT4, Base, Denali, Elevation, SLE and SLT trims. It also fits the 2015–2019 Sierra 2500 HD and Sierra 3500 HD in Base, Denali, SLE and SLT trims.
GMC Sierra years outside 2015–2019 and Chevrolet Silverado models are not on this list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
It is built for a 40 inch tire with no lift. Before running that tire, check fender and steering clearance at full lock, since no other tire sizes are covered.
What’s included
Check the package contents against your installation before starting.
Not included: the optional fender flares TF3110-1, a separate part sold apart from this set.
