hauled the viper apart for porting

[redsnake3]

with 11000kms on the original motor what i saw was unbelievable. not only was the motor in excellent shape(i expected this) but the crosshatching from the factory honing was still on the cylinders. only on a yamaha.

anyway im gonna put in a new set of rings and want to know what you guys have for me. yamaha rings preferably.

Thanks