Intended for motorcycles with a stock engine using the stock airbox, air filter and stock pipe. Stage 1 kits are fully adjustable to allow the use of a well designed aftermarket pipes and stock replacement air filters like K&N.
Stage 1 kits are designed to improve throttle response and driveability and in most cases power increases of approximately 5% throughout the entire power range can be achieved.
Intended for motorcycles with a stock or mildly tuned engine using a well designed aftermarket pipe with a modified airbox and a stock replacement air filter.
Stage 2 kits are designed for applications where individual filters cannot be installed and for applications where airbox modification improves the engine’s performance. In most cases power increases of approximately 8% can be achieved.
Intended for motorcycles with stock or mildly tuned engines using a well designed aftermarket pipe and individual air filters. In most cases power increases of 10-15% can be achieved. However driveability may be compromised particularly with short stroke, high rpm motors.
On some modern engine and airbox designs, individual filters and proper jetting offer no performance improvement yet compromise driveability, in such cases stage 3 kits are not available.
Intended for race only use or for special applications, like the Yamaha V Max complete induction kit. Stage 7 kits are designed to optimize jetting for a given tuning specification or racing conditions.
For more information regarding our jet assortments, click the learn more button below.
Some items on this website may not be legal for sale or use in California on any pollution-controlled vehicles. Dynojet jet kits are legal only for racing vehicles — not applicable or intended for use on pollution controlled street or highway vehicles.