How to Make Your Pit Bike Faster | Piranha yx140 | Replacing Sprockets

Heres a good one for you all who want to make your bikes faster. I change north front and rear sprockets. Watch to see the difference and my thoughts on it! Enjoy Bikes: Pitster pro x2 with Piranha yx140cc engine Thumpstar 125 with 140cc big bore kit Black Pitster pro x4 150cc Blue SSR 170cc Black SSR 170cc Orange