BRAND NEW PART#VS40B FITS: Most Harley Models, Bobber, Chopper W/ KEIHIN, CV Carburetor, or Delphi Fuel Injection 4″ Long Velocity Stack Includes 3 Chrome Allen Head Bolts CNC-machined from 6061 T-6 billet aluminum and anodized black finish Includes mounting hardware to attach to carburetor but does NOT include any breather bracket or support kits. Tech Note: Breather bracket or support kit is sold separately. Adapter for Mikuni is not included. Most models will require some type of mount or breather plugs. Message or call us with questions. Measures 2 3/4″ at base (less mounting holes), 4″ tall, 3 1/4″ diameter at inlet (measurements are approximate) ,