Boyesen Twinshot Adjustable Fuel Control
Cost-effective, bolt-on upgrade eliminates the sluggish and inconstant throttle response of CV-40... Read More

Cost-effective, bolt-on upgrade eliminates the sluggish and inconstant throttle response of CV-40-carbureted H-D models.
Converts all OEM CV-40 carburetors to a standardized fuel system.
Precision twin-hole sprayer for improved roll-on acceleration.
Patented Quickshot accelerator pump technology eliminates low-speed bogging and coughing.
Adjustable fuel jet to control accelerator pump fuel spray.
Dual check valve system for consistent spray pressure.
Removable sprayer allows convenient service and maintenance.
Removable main jet cap for easy access tuning.
Precision accelerator pump plunger rod improves spray response.
Stiffer spring on activation arm delivers consistent spray response.
Available in polished aluminum or matte black finish.
Bolt-on, no modifications required.
Includes new float bowl O-ring, new plunger arm and plunger arm boot.
Made in the USA.