A multi-ball mount lets you select a hitch ball that matches the trailer coupler, but each ball has its own towing rating. Compare the receiver opening first, then the ball diameter, shank style and lowest-rated component in the towing system.
CURT multi-ball mount size and rating comparison
| MPN | Receiver | Shank | Welded ball sizes | GTW by ball, small to large |
|---|---|---|---|---|
| 45651 | 2½ in | Hollow | 1⅞, 2 and 2⁵⁄₁₆ in | 5,000 / 10,000 / 14,000 lb GTW |
| 45652 | 2 in | Hollow | 1⅞, 2 and 2⁵⁄₁₆ in | 5,000 / 7,500 / 10,000 lb GTW |
| 45675 | 2 in | Solid with integrated tow hook | 1⅞, 2 and 2⁵⁄₁₆ in | 3,500 / 5,000 / 10,000 lb GTW |
Use each ball’s specific rating. These GTW figures are not interchangeable across ball sizes. Confirm tongue-weight limits and the ratings of the hitch, tow vehicle, trailer and coupler. The lowest applicable rating governs.
Five checks before choosing a multi-ball mount
- Measure the receiver opening: 2-inch and 2½-inch shanks cannot be interchanged.
- Measure the trailer coupler and select the matching ball diameter, not the ball with the highest rating.
- Read the individual GTW and tongue-weight ratings for the chosen ball on the exact CURT model.
- Check the approved hitch pin and clip; these ball mounts are sold without a pin.
- For 45675, do not infer a rated recovery load from the trailer-ball ratings or use a hook without appropriate procedures.
Compare exact CURT triple-ball mounts
CURT 45651 — 2½ in receiverLarge-receiver three-ball mount; pin and clip sold separately. Two pin-hole positions change reach, not ball height.View product and availability
CURT 45652 — 2 in receiverHollow 2-inch steel shank with welded balls. Check the matching receiver opening and approved retaining pin.View product and availability
CURT 45675 — 2 in receiverThree-ball mount plus a tow hook. Ball-specific trailer ratings do not establish a separate tow-hook working load.View product and availability
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