Genuine GM Step Rails

2025 Chevrolet BrightDrop 400

Change vehicle

Driving a truck or an SUV? There's a good chance it came from the GM factory with step rails. You might also call them side rails. Less often, you might even hear them referred to as running boards. Even the sports car community has their own naming conventions. They call them nerf bars, a term taken from "nerfing," which means bumping into another racer. Many names notwithstanding, what step rails do is provide better surfaces than bare door sills for getting into and out of your vehicle.

Update your SUV or Pickup with Genuine GM Step Rails

If you know the real deal, you probably already know how they mount: just inches from a door sill. Install them lower than that, and entry and exit get even easier. Doing that is especially helpful if you're driving a lifted vehicle. Running boards are slightly different. They mount closer to your ride's rocker panels, if not flush with them. That gives any vehicle even better ground clearance than step rails do. Running boards also usually have flatter and wider profiles, and their treads usually run the length of the boards. Whatever kind you need for your replacement or upgrade project, we've got the best solutions: genuine step rails straight from your OEM. Save time by buying them online today, right here at our auto parts counter.

84155724 - : Driver Side Assist Step for GM Image

Driver Side Assist Step

GM 84155724
Assists with access into and out of your vehicle This GM Genuine Part is designed, engineered, and tested to rigorous standards and is...
$359.07
MSRP $541.87
Save $182.80
33.7% Off
22786851 - : Shale Passenger Side Roof Side Rail Garnish Molding for GM Image

Shale Passenger Side Roof Side Rail Garnish Molding

GM 22786851
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$12.02
MSRP $18.31
Save $6.29
34.4% Off
22786853 - : Shale Driver Side Roof Side Rail Garnish Molding for GM Image

Shale Driver Side Roof Side Rail Garnish Molding

GM 22786853
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$10.43
MSRP $15.89
Save $5.46
34.4% Off
22890219 - : Driver Side Tonneau Cover Side Rail with Latch for GM Image

Driver Side Tonneau Cover Side Rail with Latch

GM 22890219
Helps secure and support your vehicle's tonneau cover This GM Genuine Part is designed, engineered, and tested to rigorous standards...
$288.58
MSRP $437.48
Save $148.90
34% Off
84064885 - : Driver Side Front Compartment Side Rail Rear Extension for GM Image

Driver Side Front Compartment Side Rail Rear Extension

GM 84064885
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$18.37
MSRP $27.97
Save $9.60
34.3% Off
42491587 - : Passenger Side Underbody Front Side Rail Inner Reinforcement for GM Image

Passenger Side Underbody Front Side Rail Inner Reinforcement

GM 42491587
Helps secure and support your vehicle's underbody rail This GM Genuine Part is designed, engineered, and tested to rigorous standards...
$38.73
MSRP $58.90
Save $20.17
34.2% Off
84240929 - : Passenger Side Front Compartment Side Rail Rear Reinforcement for GM Image

Passenger Side Front Compartment Side Rail Rear Reinforcement

GM 84240929
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$21.23
MSRP $32.34
Save $11.11
34.4% Off
84396827 - : Driver Side Front Compartment Front Side Rail Reinforcement for GM Image

Driver Side Front Compartment Front Side Rail Reinforcement

GM 84396827
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$125.08
MSRP $189.62
Save $64.54
34% Off
42491593 - : Passenger Side Front Compartment Front Lower Side Rail for GM Image

Passenger Side Front Compartment Front Lower Side Rail

GM 42491593
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$262.30
MSRP $397.64
Save $135.34
34% Off
23491821 - : Passenger Side Front Compartment Front Side Rail Reinforcement for GM Image

Passenger Side Front Compartment Front Side Rail Reinforcement

GM 23491821
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$16.54
MSRP $25.18
Save $8.64
34.3% Off
23316221 - : Passenger Side Underbody Side Rail Number 1 Outrigger for GM Image

Passenger Side Underbody Side Rail Number 1 Outrigger

GM 23316221
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$349.77
MSRP $527.83
Save $178.06
33.7% Off
22869696 - : Passenger Side Front Compartment Outer Side Rail Reinforcement for GM Image

Passenger Side Front Compartment Outer Side Rail Reinforcement

GM 22869696
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
$5.55
MSRP $8.45
Save $2.90
34.3% Off

No results found for "step rails:, side rails". Here are some helpful search tips:

  • Search by a part name. Example: water pump.
  • Be less specific. Example: brake instead of ceramic brake.
  • Remove information such as make, year or model.
  • Can't find the part you are looking for? Contact us and we'll find it for you!