big bore is more designed for modified motors, I have one and can tell you it lets the motor really rev high and has plenty of power, I don't have an OBR but I have the stock, 29cc that was ported to 30.5cc, also the stock 6000rpm clutch but it does have one heck of a top end.
I have no words.
Good job Dan what exhaust is that big-bore or Pro Pipe
Pro or full mode ported
Man that thing is fast, wich exhaust do you use?
That is sweet!
Brilliant
SICK!!!
That engine has BALLS! is that stock gearing?
Be nice to see this on some grass, a lot less friction on road.
VRC Pro pipe? How different would it be with the VRC Big Bore?
big bore is more designed for modified motors, I have one and can tell you it lets the motor really rev high and has plenty of power, I don't have an OBR but I have the stock, 29cc that was ported to 30.5cc, also the stock 6000rpm clutch but it does have one heck of a top end.
nice!!
WHAT
That engine has BALLS! is that stock gearing?
Be nice to see this on some grass, a lot less friction on road.