yeah my 108 is so fast and smooth, faster than my old 140 and 125 china's, the torque is really good and theres NO bog at all so its easy to ride and keeps putting out power smoothly all the way to top speed, i didnt think i'd like the auto clutch that much but its really good, i wouldnt go a manual clutch unless you're making it a 125 or somthing and even then you can just use a heavy duty auto clutch, but manual clutch kits are pretty cheap most shops sell them online.