Fuel Management

Simple but effective way to shift the torque curve to favor the low-end to mid-range band of the rev rangeCNC-machined, eliminating interference problems when installing; includes gaskets and boltsInsert spacer between cylinder and reed valveMade in the...

Boyesen's? patented dual-stage design incorporates a specially shaped top reed and a ported bottom reedThe top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMsThe stiffer, bottom reed is ported to provide...

Boyesen's? patented dual-stage design incorporates a specially shaped top reed and a ported bottom reedThe top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMsThe stiffer, bottom reed is ported to provide...

Boyesen's? patented dual-stage design incorporates a specially shaped top reed and a ported bottom reedThe top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMsThe stiffer, bottom reed is ported to provide...

Connects to the ignition coils through an intermediate harness connection or directly to the coil connectors; no cutting or splicing of wires is requiredAllows user to advance or retard the ignition curve based on throttle position and rpm, and to tune...

Boyesen's? patented dual-stage design incorporates a specially shaped top reed and a ported bottom reedThe top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMsThe stiffer, bottom reed is ported to provide...

Connect to the ignition coils through an intermediate harness connection or directly to the coil connectors; no cutting or splicing of wires is requiredAllow user to advance or retard the ignition curve based on throttle position and rpm, and to tune...

Boyesen's? patented dual-stage design incorporates a specially shaped top reed and a ported bottom reedThe top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMsThe stiffer, bottom reed is ported to provide...

Connect to the ignition coils through an intermediate harness connection or directly to the coil connectors; no cutting or splicing of wires is requiredAllow user to advance or retard the ignition curve based on throttle position and rpm, and to tune...

Laboratory flow analysis proves Boyesen? dual-stage reeds out-perform standard reedsThey permit greater flow velocity over the entire range of operating pressuresIncreased performance from start-up to top acceleration Kawasaki -- KX 100 -- (2020, 2019,...

Boyesen's? patented dual-stage design incorporates a specially shaped top reed and a ported bottom reedThe top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMsThe stiffer, bottom reed is ported to provide...

Boyesen's? patented dual-stage design incorporates a specially shaped top reed and a ported bottom reedThe top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMsThe stiffer, bottom reed is ported to provide...