If your talking out of the box stock. The 140 might be the in between motor i'm to sure though. Because most of these aftermarket motors were built for pitbikes. Most offroaders prefer low to mid power motors. But when i got my 150cc it seemed to have been well balanced.
The smaller motors can rev and scream all they want. They will always be out powered by the bigger motors on the tracks.
My 165cc with the v2 race head and takegawa s35 race cam revs like crazy! And keeps pulling it makes all the hp on the topend. It is a true road race cam for sure so i sorta have to ride like a 2stroker.
I'll throw this in also,with the smaller motors if you want more power. Then it's gonna cost alot more than they are worth and you'll reach the limits fast. With the bigger motors you have a little bit more to play with and get more bang for the buck.
Down side to the big motors is, if your trackbike suspension and brakes not up to par You will find out real fast! The bike will seemed to take more work out of the rider to ride.
The smaller motors can rev and scream all they want. They will always be out powered by the bigger motors on the tracks.
My 165cc with the v2 race head and takegawa s35 race cam revs like crazy! And keeps pulling it makes all the hp on the topend. It is a true road race cam for sure so i sorta have to ride like a 2stroker.
I'll throw this in also,with the smaller motors if you want more power. Then it's gonna cost alot more than they are worth and you'll reach the limits fast. With the bigger motors you have a little bit more to play with and get more bang for the buck.
Down side to the big motors is, if your trackbike suspension and brakes not up to par You will find out real fast! The bike will seemed to take more work out of the rider to ride.
