Puck Spacing for the Curt A16 5th Wheel Kit for Chevy/GMC Pucks
Updated 10/27/2025 | Published 03/24/2025
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Question:
What is the puck hole dimensions on center for this hitch Item C16520-16025?
asked by: Joanne
Expert Reply:
Hey Joanne, the Curt A16 5th Wheel Trailer Hitch # C16520-16025 is designed to fit into the factory pucks on 2016-2019 GMC / Chevy Silverado 2500 & 3500s which have a spacing of 27" from left to right and 22" from front to back; so the legs have the same spacing since they drop into the pucks.
Since it looks like you have a 2011 GMC Sierra, you'd actually need to install the base rails # C16411-204 first, and then you'd be able to use the Curt A16 # C16120.
If you have anything else you need help with, please let me know below!
Product Page this Question was Asked From
Curt A16 5th Wheel Trailer Hitch for Chevy/GMC Towing Prep Package - Dual Jaw - 16,000 lbs
- 5th Wheel Hitch
- Fixed Fifth Wheel
- OEM - GM
- 4000 lbs Vertical Load
- 16000 lbs GTW
- Cushioned Double Pivot
- Standard - Double Jaw
- 13-1/2 - 17-1/2 Inch Tall
- CURT
more information >
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Lazer S.
10/27/2025
Hey Joanne, how did things go with the Curt A16 hitch and base rail setup for your Sierra? Your feedback could really help others trying to match their truck with the right fifth-wheel system.