Towing Reference Charts

Equal-i-zer 4-point Sway Control Hitch, 10,000 lb

Four points of friction sway control built into the hitch itself rather than bolted on beside it, so there is no separate sway bar to disconnect before a tight turn or a wet ramp. The sway control works in both directions from the moment the bars are seated.

Check before buying: The four point design is audible. A rhythmic creak on slow tight turns is normal for this hitch and not a fault, but people who have not been warned about it return them.

Best for: A single or tandem axle travel trailer up to 10,000 lb where you want one part doing both jobs.

Sherline LM-5000 Trailer Tongue Weight Scale, 5,000 lb

Five thousand pounds, which is what it takes to weigh a fifth wheel pin rather than a bumper pull tongue.

Best for: Weighing fifth wheel pin weight at home.

Sherline LM 2000 Trailer Tongue Weight Scale, 2,000 lb

Double the capacity for the same money as the LM 1000, which makes it the sensible default unless you are certain your tongue weight is low.

Best for: Most travel trailers, with headroom for a heavier one later.

Tekonsha Primus IQ Proportional Brake Controller, 1 to 3 axles

The controller the rest of this category gets compared to, and the one a dozen listings on Amazon describe themselves as replacing. Proportional, self levelling so mounting angle does not matter much, and a boost setting for a heavy trailer.

Best for: Almost anybody adding a controller to a truck that does not have one built in.