Stage 1 is for ATV with stock engine and with stock air intake and stock exhaust system .
Modifications to the air intake and/or Exhaust system to your ATV will change the air/fuel mixture to your carburetors causing a lean running condition.
provides Jet Kits to compensate for the lean running condition.
Lean running conditions can destroy your engine and decreases overall performance.
Jet kits are easy to install but does require some basic carburetor tuning knowledge.
Refer to your shop manual for carburetor removal and jet installation.