on my Pro.15 i have one of those vented/lightened MIP flywheels
and on my .28 i have just a normal OFNA flywheel
(Big engine difference i know)
And i personally like how the MIP flywheel idles down and how fast i revs up
(you engine WILL have to idle a bit faster due to reduced weight keeping the engine rotating)
And yes it does make a noticeable decrease in torque, Cuz even with my smallest CB i cant do wheelies anymore

Un-related the Buggy with the .28 with the OFNA Flywheel WILL do wheelies.....