Im no pro or expert at aliening tires.. All i do is set the camber so when i put a level on the tires it is plumb up and down when quad is on the ground. Toe, i just square off rear end.
421cub will be faster in a drag race for sure. But being your staying on pump gas, id look into a serval. pump gas 421cubs IMO really arent that fun to ride unless you on the pipe at all times.
Domes are cheap. Id recommend calling a sponsor and explaining to them your current set up and your plans for the bike. They will cut you a dome for your needs.
where you climb at? Is your eccentric screw adjusted properly? Are you sure your foot is actually coming off the shifter completely before trying to upshift again? Move the shifter leveler up one set of splines and see if that helps some.
Ran a modded trans on a 90+hp 421, and a 100+hp 465cub for over 2yrs. Never showed it any mercy, and it never let me sit. That being said, EVERYTHING will eventually break.
Yes. I had both. None of them are great. But if you insist on buying from ebay, asr arms are superior. Now this is also personal experience, save some more money, and buy a good set of arms. FIREBALL