Offset Gooseneck Hitch Ball Kit for a Short Bed 2021 GMC Sierra 3500
Updated 09/26/2025 | Published 05/01/2025
Products Featured in This Question
Question:
Have 2021 gmc 3500 sierra short bed 6.5 bed, will the curt 60663 fit
asked by: Tim G
(click to enlarge)
Expert Reply:
Hey Tim, thanks for reaching out!
The Curt Multi-Fit Ball Kit w/ 4" Offset # C68ZV (60663) will only fit your 2021 GMC Sierra 3500 if it has the 8' bed and OEM puck system.
Since you have a short bed, the only offset gooseneck hitch ball kit that will work is the Gen-Y # GY55XR. This actually offers a 5" offset as opposed to the 4" offset of the Curt kit.
The puck pattern for the long and short GM trucks is different in relation to the gooseneck hitch ball hole. Why GM decided to go that route is beyond me, but that's why the Curt kit isn't interchangeable.
What gooseneck ball do you currently use?
Product Page this Question was Asked From
Curt Multi-Fit Ball Kit w/ 4" Offset for Factory Gooseneck Hitches - 30K
- Gooseneck Hitch
- Above the Bed
- Fixed Offset Ball
- 7500 lbs TW
- 30000 lbs GTW
- Built-In Loop
- CURT
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: Gooseneck Hitch
- Shop: Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert Rhino - 24K GTW - 4.5K TW
- Search Results: gh~21007
- Search Results: 50 amp rv surge protectors
- Search Results: offset gooseneck ball
- Search Results: 5th wheel gooseneck adapter
- Shop: Gen-Y Hitch Gooseneck Trailer Hitch for GM OEM Puck Systems - 5" Offset - 25,000 lbs
- Video: Review of Gen-Y Hitch Gooseneck Hitch - Gooseneck Trailer Hitch GM OEM Puck System - GY55XR
- Shop: Gen-Y Hitch Gooseneck Trailer Hitch for GM OEM Puck Systems - 5" Offset - 25,000 lbs
- Shop: Fifth Wheel Hitch
- Shop: Installation Bolt Kit for Gen-Y Hitch 5th Wheel Pin Boxes and 5th Wheel to Gooseneck Adapters
- Shop: PullRite OEX SuperLite 5th-Wheel Hitch for Chevy/GM Prep Package - 25,000 lbs
- Shop: Curt Multi-Fit Ball Kit w/ 4" Offset for Factory Gooseneck Hitches - 30K
- Shop: Curt 4" Offset Ball for Double-Lock Gooseneck Hitch
- Search Results: lippert gooseneck connect
- Search Results: lippert axles
- Search Results: torsion axle
- Q&A: 5th Wheel/Gooseneck Tailgate & License Plate Camera For 2012 Chevy Silverado 3500
- Shop: Trailer Hitch
- Shop: Lift Assist
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Article: Trailer Wiring Diagrams
- Q&A: What Is An OEM Prep Package And How Do I Know If I Have It
- Shop: Trailer Wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Article: How to Measure for Trailer Hitch Drop
- Video: B&W Companion OEM 5th Wheel Hitch Manufacturer Breakdown
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Shop: Suspension Enhancement
on Gooseneck Hitch
Jon G.
9/26/2025
Hey Tim, did you have a chance to try the Gen-Y hitch ball kit with your Sierra? I'm curious to know if it worked out for you, as it could help others with similar setups.