O2 Port Bung Adapter - 18 mm to 12 mm

Unlock serious power with the O2 Port Bung Adapter - 18 mm to 12 mm, a component from BASSANI EXHAUST built for Harley-Davidson motorcycles. This American-made system is engineered to increase flow and horsepower while giving your Harley a bold, aggressive voice.

Features

• Sold in pairs
• Made in the U.S.A.

Specifications

• Threaded outer and inner adapters reduce O² sensor port from 18 mm to 12 mm allowing riders to use our exhaust pipes on select, newer-model motorcycles