Class 4 Ball Mount (2" Shank, 10,000 lbs., 4" Drop, 9-3/8" Long)
Product Overview
When you demand more from your towing equipment, CURT class 4 ball mounts answer the call. Our heavy-duty ball mounts are constructed from quality steel and feature a 2" x 2" shank. They are built to complement CURT class 4 trailer hitches and are perfect for towing large boat trailers, RVs, livestock and horse trailers as well as a variety of other farm and industrial-type trailers (NOTE: Never exceed the lowest weight capacity of any towing component; i.e. the vehicle, hitch, trailer, etc). With a few different drop height options and the ability to flip for optional rise, CURT class 4 ball mounts are built to work as hard as you do, from sunup to sundown.
This class 4 ball mount has a gross trailer weight capacity of 10,000 lbs. and tongue weight rating of 1,000 lbs. It has a standard drop of 4" or can be flipped to provide 2-3/4" of rise. It also features a hollow shank, allowing an anti-rattle hitch pin or lock to be used for reduced noise and vibration. As with most of our ball mount line, CURT class 4 ball mounts are CNC-formed, robotically welded and mechanically descaled to create a flawless product. We finish our heavy-duty ball mounts in a gloss black powder coat to give them superior rust, chip and UV resistance.
Key Features & Attributes
- Fits trailer hitches with a 2" x 2" receiver tube opening
- Equipped with a 1-1/4" hole to accept a trailer ball shank
- 4" drop or 2-3/4" rise for precise trailer leveling
- Hollow shank weighs less and can be used with an anti-rattle hitch pin
- CNC-formed, robotically welded and mechanically descaled for a perfect fit
- Protected by a durable powder coat finish
- Made in USA
- Limited lifetime warranty (one-year finish, one-year parts)
Product Specifications
| Brand | CURT Manufacturing |
| Part Number | 45311 |
| NTP Number | 64-5011 |
| UPC Code | 612314453115 |
| AAIA Code | BKDK |
| Ball | Hole 1 1/4 IN |
| Color | Black |
| Drop | 4 IN |
| Finish | Gloss Black Powder Coat |
| Gross | Trailer Weight (GTW) 10,000 LB |
| Hub | Warehouse (HUB_USA) D01 |
| Master | Case Qty 0 |
| Material | Carbon Steel |
| Pallet | Qty 0.000 |
| Parcel | Allowed Yes |
| Part | Type * |
| Receiver | Tube Size 2 IN |
| Rise | 2 3/4 IN |
| Shipping | Weight 8.350 |
| Tongue | Weight (TW) 1,000 LB |




