Cruisemaster articulating couplers are the gold standard for off-road trailers, letting the trailer pivot freely over rough terrain without straining the hitch. The two you'll see most are the DO35 and DO45. Here's the difference and how to choose.
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What an articulating coupler does
Unlike a standard ball hitch, an articulating off-road coupler allows full three-axis movement - pitch, roll, and yaw - so the trailer can twist independently of the tow vehicle on uneven ground. That protects the chassis and keeps wheels planted.
DO35 vs DO45: the difference
| Factor | DO35 | DO45 |
|---|---|---|
| Best for | Most off-road camper trailers | Heavier trailers / higher load rating |
| Articulation | Full 3-axis | Full 3-axis |
| Build | Proven, widely used standard | Heavier-duty, larger pin |
| Tow pin kit | DO35 tow pin kit | DO45 tow pin kit |
In short: the DO35 suits the majority of off-road campers, while the DO45 steps up load capacity for heavier rigs.
Don't forget the tow pin kit
The coupler mounts to your vehicle via a matching tow pin kit - a DO35 tow pin kit for the DO35, and the corresponding DO45 kit for the DO45. They're not interchangeable, so order the kit that matches your coupler.
Frequently asked questions
Can I fit a DO45 coupler with a DO35 tow pin?
No - the pin sizes differ. Match the tow pin kit to the coupler model.
Which coupler do most camper trailers use?
The DO35 is the most common choice; step up to the DO45 for heavier trailers or a higher rating.
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