B&W Turnoverball Gooseneck Hitch Extender GNXA4085 - Adds 4in

In this review of the B&W Turnoverball Gooseneck Hitch Extender GNXA4085, the bottom line is straightforward: it is for truck owners who need extra cab clearance when towing with a Turnoverball gooseneck hitch. The extender shifts the trailer pivot point rearward by 4in so large cabs or tailgate configurations clear the ball during tight turns. Customers and this reviewer noted durable construction and practical value; it is a simple, removable accessory that solves a common fit problem without major modification to the hitch or trailer.

Key Features

• 4in Rearward Pivot Shift: Moves the trailer pivot point 4in rearward to increase clearance between the trailer and truck cab or tailgate during turns.
• Removable Design: Installs and removes easily so it can be used only when extra clearance is needed without altering the base hitch.
• 3/4in Steel Plate Construction: Built from thick steel plate for heavy-duty durability and consistent alignment under load.
• High Tow Capacity: Maintains a 20,000 LB GTW and 5,000 LB VTW rating, so it works with heavy trailers within the hitch system limits.
• Made in America with Warranty: Manufactured domestically and backed by a limited lifetime warranty, offering long-term reliability and support.

Who It's For

This extender is aimed at owners of Turnoverball gooseneck hitches who need an easy, proven way to add clearance for extended cabs, tailgates, or accessories that otherwise contact the ball during tight turns. It is especially good for heavy-tow users who want to preserve the hitch's rated capacities while solving fitment issues.

Those who should look elsewhere include truck owners who do not use a Turnoverball hitch or who require a custom offset beyond the fixed 4in shift; also, if you need an integrated permanent modification rather than a removable accessory, a different solution may be more appropriate.

Pros & Cons

Pros

• Solid build quality and heavy welds that match customer comments about durability.
• Provides reliable 4in clearance, helping prevent cab or tailgate contact during turns.
• Maintains the hitch system's rated 20,000 LB GTW and 5,000 LB VTW when properly installed.
• Removable and simple to install, making it flexible for intermittent use.

Cons

• Fixed 4in offset may not suit every clearance requirement, so it is not adjustable for bespoke fit issues.
• Adds an extra component to keep track of when removing or storing the extender.

Specifications

Product Type	Gooseneck hitch extender accessory
Pivot Shift	4 in rearward
Material	3/4 in steel plate
GTW Rating	20,000 LB
VTW Rating	5,000 LB
Compatibility	Designed for Turnoverball gooseneck hitch
Warranty	Limited lifetime warranty

Our Verdict

The B&W Turnoverball extender GNXA4085 is a practical, well-built accessory for anyone with clearance issues using a Turnoverball gooseneck hitch. It delivers the promised 4in shift, preserves rated towing capacity, and arrives with solid construction and a limited lifetime warranty, making it a sensible, cost-effective fix for cab and tailgate clearance problems.

Frequently Asked Questions

Will this extender reduce my hitch towing capacity?
The extender is designed to work with the Turnoverball system and retains the hitch ratings of 20,000 LB GTW and 5,000 LB VTW when used as intended.

How much clearance does it add?
The extender moves the pivot point rearward by 4 in to add clearance between the trailer and truck cab or tailgate.

Is it easy to remove when not needed?
Yes, the extender is removable so it can be installed only when extra clearance is required and stored when not in use.