S23 Parts
Elite Upgear Kit
$ 64.99
When doing a big bore kit, you need gears. Without them you are never going to take advantage of the extra power. Choose whichever set fits your needs. I suggest going for taller gears, if you do a lot of flat top speed riding, and shorter ones if you like acceleration, and stop/go.
Don't forget some ProCure to avoid any leaks.
Rebuild your final drive while you're in there, get the full rebuild kit HERE
Replacement gaskets HERE!
15x42, 16x42, 16x36 is best for 72cc builds, 9.2:1
17x41 is best for smaller cc stroker bikes, 8.2:1
18x41 is best for large cc stroker bikes, 7.9:1