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What is Difference Between Round Bar and Trunnion Fastway Weight Distribution System


I am looking at purchasing the Fastway e2 weight distributing hitch for my 2018 Toyota Highland trailer has a 421 tongue weight and I see that there are two different types - trunnion and round tube. Why would someone want/need one over the other? Also, one states it is for a 400-800# tongue weight and the other states only for 800#. I am guessing they have the same to gue weight capability?


Helpful Expert Reply:

Both round and trunnion bar systems are equally as effective, but a round bar system won't have as much ground clearance under it as a trunnion bar system. This is because the bars attach to the weight distribution head from underneath. If your tow vehicle is a full sized pick-up or SUV, a round bar system would work just fine. If you're towing with a small crossover or a minivan (anything with little ground clearance) you'd definitely want to go with a trunnion bar system. Typically trunnion setups can have higher capacities and round bars are typically only available for lower ranges.

Both the Fastway kits # FA94-00-0800 and # FA92-00-0800 you mentioned will have the same 400-800 lb tongue weight range.

For a 2 inch ball you would want part # A-90 and for a 2-5/16 inch ball # 19286. To install them you'd need a thin walled socket part # ALL643216.

helpful expert reply by:
Jameson C

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