All are 1 or 2 stage kits unless stated. Chosen specifically by Dynojet for the model bike. Stage 1 Jet Kits- Designed for motorcycles with stock engines using the stock airbox, air filter and stock or aftermarket exhaust. Fully adjustable to allow for the use of well-designed aftermarket exhausts and stock replacement air filters. Improve throttle response and driveability. Power increases of approximately 5% throughout the entire power range. Stage 2 Jet Kits Designed for motorcycles with stock or mildly modified engines using well-designed stock or aftermarket exhausts with a modified airbox and a stock or replacement air filter. For applications where individual air filters cannot be installed and where airbox modifications improve overall engine performance. A power increase of 8% can be achieved in most cases. Stage 3 Jet Kits Designed for motorcycles with stock or midly modified engines using individual air filters and a stock or aftermarket exhaust. In most cases power increases 10-15%; driveability may be compromised in short-stroke high RPM motors. On some modern engine and airbox designs; individual filters and proper jetting offer no performance improvement and compromise driveability; Stage 3 kits are not available in such cases. Stage 7 Jet Kits Designed for race-only use or special applications. All stage 7 kits are high RPM. Not suitable for street use. "Legal in California only for racing vehicles which may never be used upon a highway."
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