Quad Cab or Crew Cab Running Boards? Compared by Specs
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Choosing between a quad cab vs crew cab running board requires matching the step to your truck's specific door configuration. Both AutoBull and COMNOVA offer 6-inch wide steps for easier entry, but they target different vehicle bodies. The AutoBull unit fits Dodge Ram quad cabs, while the COMNOVA step is designed for Chevy Silverado and GMC Sierra crew cabs. You must verify your cab size to ensure proper fitment and safe usage.
Key differences
| Aspect | AutoBull 6 in Quad Cab Running Boards | COMNOVA 6" Running Boards for Silverado/Sierra Crew Cab |
|---|---|---|
| Compatible Truck | Dodge Ram 1500, 2500, 3500 | Chevy Silverado, GMC Sierra 1500, 2500HD, 3500HD |
| Cab Size | Quad Cab | Crew Cab |
| Material | Aluminum | Galvanized Steel |
| Finish | Black powder coated | Powder coated with glitter |
| Weight | 36.4 pounds | 49.6 pounds |
| Weight Capacity | not listed | 500 lb |
Which one should you choose?
Choose AutoBull 6 in Quad Cab Running Boards if
- You drive a Dodge Ram with a quad cab configuration
- You prefer a lighter aluminum step for easier handling during installation
Choose COMNOVA 6" Running Boards for Silverado/Sierra Crew Cab if
- You own a Chevy Silverado or GMC Sierra with a crew cab
- You need a step with a specified 500 lb weight capacity
Verdict: Select the AutoBull step if you have a Dodge Ram quad cab and want a lightweight aluminum build. Choose the COMNOVA option for Chevy or GMC crew cabs, especially if you prioritize a higher weight capacity rating. Always confirm your specific cab size before purchasing to ensure the brackets align correctly.
Quad Cab vs Crew Cab Specs
Cab Size Compatibility
The AutoBull Quad Cab Running Boards are engineered specifically for Dodge Ram quad cabs, including the 2009-2018 Ram 1500, the 2019-2024 Ram 1500 Classic, and Ram 2500 and 3500 quad cabs up to 2026. In contrast, the COMNOVA Running Boards are designed exclusively for crew cab configurations. They fit the 2007-2018 Chevrolet Silverado and GMC Sierra 1500, as well as the 2007-2019 2500HD and 3500HD models. This product also covers the 2019 Silverado 1500 LD and Sierra 1500 Limited. You must match the running board to your specific door layout, as these units are not interchangeable between quad and crew cab bodies.
Step Width
Both products provide a 6-inch wide stepping surface, which offers a secure foothold for passengers entering or exiting the truck. This width is beneficial for seniors, children, or anyone with mobility challenges who needs a stable platform. The AutoBull model features a honeycomb anti-slip design in the center of the step, while the COMNOVA unit uses anti-slip plastic steps. Since both offer the same 6-inch width, the practical benefit for stepping ease is identical. You get a similarly generous surface area on both sides, ensuring that your footing remains stable regardless of which brand you choose for your specific cab size.
Material Construction
The AutoBull running boards are constructed from high-quality aluminum with a black powder-coated finish. This material choice helps resist rust and withstands various weather conditions while keeping the unit lighter. The COMNOVA running boards are made from heavy-duty galvanized steel, also finished with a black powder coat that includes glitter for style and rust prevention. Steel is generally denser and heavier than aluminum. The AutoBull unit weighs 36.4 pounds, whereas the COMNOVA unit weighs 49.6 pounds. Your choice depends on whether you prefer the lighter weight of aluminum or the traditional heft of galvanized steel.
Profile Dimensions
The AutoBull step has a height of 2.1 inches and a length of 77.4 inches. The COMNOVA step is slightly lower at 2 inches in height but longer at 86 inches. The 0.1-inch difference in height is negligible for most users, but the 8.6-inch length difference on the COMNOVA unit may affect how it fits within the door opening of your specific truck. The AutoBull unit includes ABS plastic corner covers to protect the edges, while the COMNOVA unit uses plastic covers on the brackets to prevent rust. Both designs aim to protect your vehicle's exterior from debris and minor scratches during entry.
Weight Capacity
The COMNOVA running boards are rated to support up to 500 pounds per bar. This high weight capacity ensures durability for heavier users or those carrying gear. The AutoBull product data does not list a specific weight capacity limit. It mentions durability and resistance to everyday wear and tear, but without a stated number, you cannot verify if it matches the 500-pound rating of the COMNOVA unit. If maximum load bearing is a critical factor for your daily use, the COMNOVA specification provides a clear advantage. For the AutoBull unit, this specific data point is not available in the provided specifications.
Which running board fits your truck
Dodge Ram quad cab owner
This AutoBull step is built for Dodge Ram quad cabs. It features a 6-inch wide aluminum step with a black powder coat finish. The ABS plastic corner covers protect the edges, while the honeycomb anti-slip center provides secure footing. It includes mounting brackets and a 36-month warranty for long-term use.
Silverado crew cab driver
The COMNOVA running board fits crew cab Silverado and Sierra trucks. Made from heavy-duty galvanized steel, it supports up to 500 lbs. The 6-inch wide step offers a safe landing area. It installs with direct bolt-on hardware, requiring no drilling, and includes adjustable positioning for a precise fit on your vehicle.
Buyer seeking lightweight aluminum
If you prefer aluminum over steel, choose the AutoBull option. It weighs 36.4 pounds, which is lighter than the steel alternative. The aluminum construction resists rust, and the black powder coat finish adds durability. The 6-inch width ensures easy entry, while the included brackets simplify the installation process on your Dodge Ram.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | AutoBull 6 in Quad Cab Running Boards | Ram Quad Cab owners needing wide aluminum steps | Check price of AutoBull 6 in Quad Cab Running Boards on Amazon |
| 2 | COMNOVA 6" Running Boards for Silverado/Sierra Crew Cab | Crew cab owners needing high load capacity | Check price of COMNOVA 6" Running Boards for Silverado/Sierra Crew Cab on Amazon |
The products compared
AutoBull 6 in Quad Cab Running Boards
Best for: Ram Quad Cab owners needing wide aluminum steps
- Cab Size
- Quad Cab (what this guide is about)
- Material
- Aluminum
- Step Width
- 6 inches
- Finish
- Black powder coated
- Compatible Truck
- Dodge Ram 1500, Ram
- Style
- Side Steps
View on Amazon: AutoBull 6 in Quad Cab Running Boards Affiliate link
These AutoBull side steps are designed for Dodge Ram 1500 and 2500/3500 Quad Cab trucks. They feature a 6-inch wide aluminum step with a black powder-coated finish. The 2.1-inch height provides a moderate lift. ABS corner covers add protection. The 77.4-inch length fits the bed side. This pair weighs 36.4 pounds. It suits owners seeking durable, rust-resistant steps for easier cab access.
Pros
- 6-inch wide stepping area for convenience
- Rust-resistant aluminum construction
- Black powder-coated finish for durability
- ABS plastic corner covers for edge protection
Cons
- 2.1-inch height offers less lift than 4-inch options
- No remote activation or automatic deployment
- Requires manual installation with included brackets
Good fit if
- You drive a Ram Quad Cab and want a wide step
- You prefer aluminum for rust resistance
- You need basic, durable side steps
Skip if
- You want a higher 4-inch step profile
- You prefer stainless steel over aluminum
- You need automatic deploying steps
Verdict: AutoBull Ram Quad Cab Side Steps provide a sturdy 6-inch aluminum step for Ram Quad Cab owners. It is a solid choice if you prioritize rust resistance and a wide foothold over automatic features.
COMNOVA 6" Running Boards for Silverado/Sierra Crew Cab
Best for: Crew cab owners needing high load capacity
- Cab Size
- Crew Cab (what this guide is about)
- Compatible Vehicle
- 2007-2018 Silverado/Sierra 1500
- Material
- Carbon steel
- Step Width
- 6-inch
- Installation
- Direct bolt-on, no need to drill
- Finish
- Powder coated
View on Amazon: COMNOVA 6" Running Boards for Silverado/Sierra Crew Cab Affiliate link
This Comnova running board fits 2007-2018 Silverado and Sierra crew cabs. It uses heavy-duty galvanized steel with a powder-coated finish for rust prevention. The 6-inch wide step offers a secure footing for passengers. It supports up to 500 pounds per bar. Installation is direct bolt-on with no drilling required. The design allows for forward and backward adjustment on the vehicle.
Pros
- Heavy-duty galvanized steel construction
- 6-inch wide step for secure footing
- 500 lb weight capacity per bar
- Adjustable slider design for customization
- Direct bolt-on installation without drilling
Cons
- Not compatible with diesel engine models
- Excludes 2020-2025 Silverado models
- Heavier build at 49.6 pounds
Good fit if
- You drive a 2007-2018 Silverado or Sierra crew cab
- You need a high weight capacity for passengers
- You prefer a wide step for easier boarding
Skip if
- You own a 2020 or newer Silverado
- Your truck uses a diesel engine
- You require a double cab configuration
Verdict: Comnova Silverado Crew Cab Steel Step provides a sturdy, wide platform for crew cab owners. It is ideal for those prioritizing durability and load capacity over lightweight materials.
Specifications side by side
| Spec | AutoBull 6 in Quad Cab Running Boards | COMNOVA 6" Running Boards for Silverado/Sierra Crew Cab |
|---|---|---|
| Compatible Vehicle | not stated | 2007-2018 Silverado/Sierra 1500 |
| Cab Size | Quad Cab | Crew Cab |
| Material | Aluminum | Carbon steel |
| Step Width | 6 inches | 6-inch |
| Installation | not stated | Direct bolt-on, no need to drill |
| Finish | Black powder coated | Powder coated |
| Weight Capacity | not stated | 500 lbs |
| Compatible Truck | Dodge Ram 1500, Ram | Chevy Silverado, GMC Sierra |
| Style | Side Steps | Side Steps |
| Dimensions | 77.4 × 6 × 2.1 inches | 89 × 6 × 2 inches |
| Weight | 36.4 pounds | 49.6 pounds |
| Size | Ram Quad | 07-18 Silverado Crew Cab |
| Color | Alu-diamond anti-slip black | Black |
| Model | ABRB-1009 | 15655H6-BLK-8-C |
Frequently asked questions
What is the main difference between quad cab and crew cab running boards?
The primary difference is the physical length required to match your truck's door configuration. Quad cab models are shorter to fit the two-door layout, while crew cab steps are longer to cover the extended rear door opening. You must select the specific cab style to ensure the brackets align with your frame rails and the step covers the doorway properly.
Are 6-inch wide running boards sufficient for easier entry?
Yes, a 6-inch width provides a substantial foothold for most users. Both the AutoBull and COMNOVA options listed here feature this 6-inch width. This dimension offers a stable surface for stepping up into the cab, balancing ease of access with a reduced side profile compared to wider tubular steps.
Which material is better for rust resistance, aluminum or steel?
Aluminum offers superior natural rust resistance compared to steel. The AutoBull quad cab step is constructed from aluminum, making it a strong choice for owners prioritizing corrosion resistance. Steel steps, like the COMNOVA crew cab option, provide high load capacity but rely on finishes like powder coating to prevent rust over time.
How much weight do these running boards add to the truck?
The weight varies by material and size. The AutoBull aluminum quad cab step weighs 36.4 pounds, while the COMNOVA steel crew cab step weighs 49.6 pounds. Aluminum steps are generally lighter, which can have a negligible impact on fuel economy compared to heavier steel alternatives designed for maximum durability.
Do these steps fit all Dodge Ram trucks?
No, you must match the step to your specific cab size. The AutoBull product is designed exclusively for Ram quad cabs, including models like the 2009-2018 Ram 1500 and 2500/3500 quad cabs. It will not fit crew cab models, which require longer steps to align with the additional rear door space.
What is the height difference between these running boards?
The AutoBull quad cab step sits 2.1 inches high, while the COMNOVA crew cab step is 2 inches high. This slight difference affects the step-up angle. Both heights provide a moderate lift, helping you enter the cab without requiring excessive leg strength or straining your knees during daily use.