NAMZ Custom Cycle O2 Sensor Extensions & 18mm to 12mm Bung Reducers - Harley Dyna & Softail
About NAMZ Custom Cycle
NAMZ Custom Cycle builds plug-and-play wiring harnesses, extension kits and electrical components for Harley-Davidson. Its handlebar extension and connector kits are what make an ape hanger or bagger bar swap a bolt-in job instead of a splicing project.
These NAMZ Custom Cycle O2 sensor extensions come with 18mm to 12mm bung reducers, allowing you to fit older-style exhaust headers onto newer Harley-Davidson models. This pair is essential for adapting exhaust systems where sensor bosses have changed size or location. They include pre-installed terminals, ready to be spliced into your existing wiring harness for a custom fit.
Why riders pick this
- Adapts 18mm exhaust bungs to 12mm O2 sensors
- 6-inch extension for relocated sensor positions
- Includes pre-installed terminals for custom wiring
- Allows older headers on newer Harley models
- Maintains accurate O2 sensor readings
When upgrading or customizing your Harley-Davidson, you might encounter compatibility issues between older exhaust headers and newer models' O2 sensor requirements. This NAMZ Custom Cycle kit provides a crucial solution, offering both the necessary extension length and the 18mm to 12mm bung reducers. This allows you to run your preferred exhaust pipes without compromising your bike's critical engine management system, ensuring proper air/fuel ratio readings.
Seamless Exhaust System Adaptation
- Includes 18mm to 12mm O2 sensor bung reducers
- Features 6-inch extension length for relocated sensors
- Comes with pre-installed terminals for custom wiring
- Enables fitment of older headers onto newer V-twin models
- Supports proper O2 sensor function with modified exhausts
Customizing Your Harley-Davidson Exhaust
This pair of O2 sensor extensions and bung reducers is ideal for riders modifying their exhaust systems on Dyna and Softail models. The 6-inch extension provides the reach needed for relocated sensors on newer platforms, while the reducers ensure a snug fit for different bung sizes. Remember that connectors are not included, giving you the flexibility to integrate these extensions precisely into your specific wiring harness setup.
Specifications
- Brand: NAMZ Custom Cycle
- Manufacturer Part #: NBR-01
- UPC: 810088715372
- Length: 6 in
- Width: 4 in
- Height: 0.75 in
- Weight: 0.3 lbs
Common questions
Will these extensions allow me to use my older headers on a newer Harley-Davidson?
Yes, the 6-inch extensions reach relocated sensors on newer models, and the 18mm to 12mm bung reducers adapt different boss sizes between years, making older headers compatible.
Are the connectors included with these O2 sensor extensions?
Terminals are pre-installed, but connectors are not included. This allows for custom splicing into your existing wiring harness.
Which Harley-Davidson models are these designed for?
These are designed for 2012 and newer FXST and Dyna models, facilitating the fitment of 2009-style header pipes onto 2010-up platforms.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | NAMZ Custom Cycle |
| TYPE | Electrical |
| SKU | 850-08782 |
| WEIGHT | 0.3 lb |
