you can buy a go-kart throttle cable with that 1/8"(?) ball on one end. Then you have to have a way to attach the cut end to your carb, which you can use a lokar style connection. Slick and any length cable you want, up to 100" or more.
I might mention the lokar inner cable itself is awful, the ball end has a shoulder that won't let it seat AND it's ball is undersized. Glad I don't have that problem.
here's the carb end
LOKAR S-1034 REPLACEMENT THROTTLE CABLE END ASSEMBLY FOR CARBURETOR | eBay
here's the cable, or one similar
Go Kart Racing Throttle Cable Ball End 72" inch Briggs Honda Raptor Clone Animal | eBay
My last choice would be this down at the pedal, but in a pinch it'd work. Might be good to have an extra in the glove box
CABLE KNARP 1/4 | eBay
