Outside to Outside Channel Measurement On Curt Channel Style Adjustable Ballmount
Updated 10/30/2025 | Published 02/05/2025
Products Featured in This Question
Question:
what is the outside dimensions of the channel that holds the twin ball on a Curt 45900 hitch. I see that the inside dimensions are 3inch but what about the measure outside. I ask to see if I have a lock pin for the ball that is long enough to span the width of the channel on the outside and still be able to lock. If you have a locking pin that would work it would be great if you also listed that part number. Thanks.
asked by: James
Expert Reply:
Hey James! Sorry for the slight delay on this, I was waiting on a response from Curt since we don't have one in our local warehouse I can measure. The outside to outside measurement on the # C45900 is 3.69". Will that work with your lock? If not, Curt makes a keyed alike lock set designed to fit this ball mount which is the # C23556.
(click to enlarge)
Product Page this Question was Asked From
Channel Style Adjustable Ballmount - 2" & 2-5/16" Balls - 14,000 lbs
- Trailer Hitch Ball Mount
- Adjustable Ball Mount
- Two Balls
- 2 Inch Ball
- 2-5/16 Inch Ball
- Steel Shank
- Drop - 6 Inch
- Rise - 5 Inch
- Fits 2 Inch Hitch
- 14000 lbs GTW
- CURT
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: weld~on trailer tie down anchors
- Shop: etrailer Forged Steel D-Ring Tie-Down Anchor with Weld-On Clip - 1/2" - 4,000 lb WLL
- Search Results: curt 45900
- Search Results: cotter pins
- Search Results: spare tire mount
- Search Results: extended ball mount
- Search Results: extended hitch
- Search Results: decking screws
- Shop: RV Designer Pin Clip - 5/8"
- Shop: Channel Style Adjustable Ballmount - 2" & 2-5/16" Balls - 14,000 lbs
- Video: Review of the InfiniteRule Lock Set for BulletProof Hitches, Curt Ball Mount, and 2"
- Video: Feature Breakdown: Curt Lock Set for Adjustable Channel-Style Mounts
- Video: A Closer Look at the Curt Lock Set for Adjustable Channel-Style Mounts
- Shop: Curt Lock Set for Adjustable Channel-Style Mounts
- Shop: InfiniteRule Lock Set for BulletProof Hitches, Curt Ball Mount, and 2" - 2-1/2" Receivers
- Shop: 2-1/4" Long Torx Trailer Floor and Wall Liner Screw for ACQ Treated Wood
- Shop: 1-1/2" Long Torx Trailer Floor and Wall Liner Screw for ACQ Treated Wood
- Shop: Trailer Hitch
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Article: Trailer Wiring Diagrams
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Shop: Trailer Wiring
- Video: How to Choose a Trailer Brake Controller
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Video: What to Know About the Curt TriFlex NEXT Trailer Brake Controller
- Shop: Suspension Enhancement
- Article: How to Measure for Trailer Hitch Drop
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Shop: Brake Controller
on Drop Hitch
Robin H.
10/30/2025
Hey James, did the 3.69-inch outside measurement on the Curt channel work with your lock? Your feedback could really help others checking pin lengths for this same ball mount.