Ummm, no offence mate but have u even owned a Ninja... post like that with no comment!!! I suppose u think the OS is the obsolute best, bar none, PERIOD!!!!
put a smiley in there if u r joking!!!
No i have never owned a ninja myself,i have however tuned them and a few of my mates used to rum them and a few guys at our club still run them.So i have had hands on experience with the ninjas and the os motors.From this experience i can safely say the os is a better motor.My vspec ran longer to a tank,had more power,was easyer to tune and was more reliable.
I swear by OS because they are probably the most reliable motors you can buy.And they are no slouch in power either.