Throttle body boring & velocity porting

When purchasing this service, customers must send their core with order number in to..  Please provide our complete address (Dynamic Performance L.L.C., P.O. Box 16674, 14 Ocean Ave. West Haven, CT 06516) Increase your bike's performance with a throttle body velocity port & bore for your CRF! This bore increases air-flow for increased power and torque, giving you an edge on the track. Professional installation and set-up ensures you'll get the most out of your new bore. Feel the power of increased performance today!