I'm looking for more acceleration for my YFZ, I just don't know whether to go with the lighter or heavier flywheel, I also don't want to sacrifice any top end.

 

i would always think the lighter the better but idk

 

lighter flywheel makes a machine rev faster and more violently. Also easier to stall and more likely to bogg. I was under the impression the yfz was already kinda like that. You just gotta decide if you want more of that or less. It does help acceleration after launch, im not schooled on its effect at launch though. Extent of my knowledge there is that people say fat guys want more flywheel.

 

Everyone I know, including myself, is running at least a -4 if not a -6 flywheel on their YFZs.

The only people I know running heavier are XC racers.

Buck

 

YFZ660R, It depends what you want out of your bike. If you want your bike to jump the gun, even more so, then get a lighter flywheel. If you want more manageable power go heavier. No flywheel affects top end. But trailtech does offer balancing the stock flywheels too. Personally I'd get heavier maybe +4 but i just ride dunes and trails.link ---> TRAILTECH