• This kit includes enough jets that it can be used as either Stage 1 or Stage 3
• Stage 1: Specifically for motorcycles with stock engines using stock airboxes, air filters and stock or aftermarket exhaust systems
• Adjust to allow for the use of well-designed aftermarket exhaust systems and stock replacement air filters
• Get better throttle response and driveability
• Expect power increases of approximately 5 percent throughout the power range
• Stage 3: For motorcycles with stock or slightly modified engines that have individual air filters and stock or aftermarket exhaust systems
• Proper jetting and individual filters offer no performance improvement on certain engine and airbox designs and compromise driveability - Stage 3 kits are not available for these models
• Expect a power increase of 10-15 percent, short stroke high RPM motors are susceptible to compromised driveability as a result

The Air Resources Board (ARB) does not permit the use of aftermarket emission-related parts that alter the air/fuel ratio of an emission-controlled vehicle. Due to these legal restrictions this part cannot be shipped to California.