04yamahayfz

Thanks guys anyone had any bad experiences with there serval motor or any bad experience with any certain builders

What kind of clutch setup are you guys running? I kno the stock setup with dirt diggers ain't gonna work with 85hp.

I have talked to a bunch of builders some say to have it ported some say just clean up and it's ready. no expense will be spared on this build so what do u all think? If getting heavy port work mean loosing power on bottom and gaining top I would just go with the clean up

The question I have is it really worth it? Right now I have a stock crank stock cylinders with some great port work, 28mm carbs,VF3 reeds, trinity cool head and T-5s. I have been looking into doing a 4mm serval kit with clean up plus upgrading the carbs to 34mm and tradin the t-5s to CPIs! Will I really be gettin a lot of extra horsepower and torque for this I hate to spend that much if it ain't what it's all cracked up to be. Thanks for any input!! Also I only rides in woods tight trails and mostly hillclimb