Fuel Management

Mikuni DF 52 w/ PTFE pumps

L78-84 Shovelheads use rubber-band-type intake seals66-E78 Shovelheads use O-ring-type intake sealsCompatible with S&S Super E, B and G carbsAvailable for stock length cylindersMade in the U.S.A.

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

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

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

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...

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

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

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

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

Screws into the factory oil fill spout as a stock replacement part on M-Eight baggersThis breathing dipstick removes unwanted build-up of blow by, which is found in engines with excessive leakdown through the rings/cylinders which is a common issue with...

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