Peterbilt 357/378 Bumper Flip Kits

Frequently Asked Questions About Peterbilt 357/378 Bumper Flip Kits

What is a bumper flip kit and why would I need one?

A bumper flip kit is a set of mounting brackets that changes the position of your front bumper, typically raising it higher on the frame rails. This is commonly done to increase ground clearance and approach angle for trucks that operate off-road, in oilfield applications, construction sites, or other rough terrain where a stock-height bumper could be damaged.

Will this flip kit fit my specific Peterbilt 357 or 378?

Flip kits are designed around the frame width and mounting points of specific model years and cab configurations, so fitment can vary even within the 357 and 378 lineup. Before ordering, check the listed compatibility details for your exact model and confirm your frame dimensions and existing bumper style match the kit specifications.

Does installing a flip kit require drilling or permanent modification to the frame?

Most flip kits are designed to bolt on using the existing frame holes or the bumper's original mounting hardware, but some installations may require additional drilling depending on your truck's setup and the bumper you're pairing it with. Reviewing the included installation instructions before starting the job will help you understand what's needed for your particular truck.

What material and finish options are available for these kits?

Flip kits are typically offered in steel or aluminum, with finish options that may include raw, painted, or powder-coated depending on the manufacturer. Steel kits offer added strength for heavy-duty use, while aluminum options can help reduce overall weight. Check the specific product listing to confirm which material and finish best suits your application.

Will raising my bumper with a flip kit affect my lights or DOT compliance?

Changing the height of your bumper can affect the position of mounted lights, such as turn signals or marker lights, so you may need to reposition or add lighting to stay compliant with DOT regulations. It's a good idea to review current FMVSS lighting height requirements and check with your local inspection authority to confirm your truck remains compliant after the change.