I have a 706b with 7/8 hex axle, looking to put a 1” round axle in. GPS has “standard 1” round”, 42 inch for $54, but the Manco axle of the same dimensions is $99. Is there a difference?
i don't know what the difference is between those two axles but curious as to the reason you're swapping out the hex for a round. If it's because you're having trouble finding wheels with a hex bore then you should check out the hex bore hubs that GPS has. https://www.gopowersports.com/manco-4x4-live-axle-hub-7-8-hex/
As of a couple months ago the hex bore wheel bearings and hex bore brake disc were still available as well, but the last time I looked the hex bore sprocket hub was out of stock.
Parts availability/fewer options is a factor. I’m putting a new engine/TC bigger chain etc and want the rest new as well. Second, I’ll have almost enough parts on the shelf leftover to build a kart from scratch, something I want to try.