Dynojet Research Jet Kit - Stage 1 1148;

Stage 1 is 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 Stage 1 kits are designed to improve throttle response and drivability and in most cases power increases of approximately 5% throughout the entire power range can be achieved.