QMB139 Main Jet Kit - 21 piece

Did you get a performance air filter, exhaust, or a big bore kit, and need to tune your carburetor? This QMB139 (GY650) CV (stock carburetor) jet tuning kit is  exactly what you need to dial it in. This kit comes with 10 main jets and 11 pilot jets

Kit includes:

Pilot Jets:

#30, #35, #38, #40, #42, #45, #48, #50, #52, #55, #58

Main Jets:

#78, #80, #85, #87, #88,  #90, #92, #94, #96 and #98. 

Can also be purchased individually.