These larger diameter bungs are great if you want them to match up to the same diameter as your 1" frame tubing

Chrome plated spacer kit (3/4 axle) used on 2000-2007 Softail (except on 2006 FXST FLSTFSE2)

- Direct Fit: Bolts on directly in place of your stock tank without any need for modifications or welding

Part #8311 CHR

2 for the front rocker box and two for the rear

02 Port Bushing Adapters Seat Style_Solo Seats These larger diameter bungs areThreaded outer and inner adapters reduce O2 sensor port from 18mm to 12mm allowing riders to use exhaust pipes on select newer model motorcycles. Sold in pairs. Made in the U. S. A.