VT#: 35-0904
Boyesen bolt on upgrade that will eliminate sluggish throttle response for Mikuni HSR 42/45 with 1-3/4" adapter. Acceleration gains from idle to wide-open throttle and compliments popular air filter system upgrades. Dyno tests show up to 4 horsepower and 5 ft-lbs of torque gained. There is no rejetting or remapping needed.
Custom application for HSR-42/45