DNA Air Filter for Triumph Bonneville Bobber 1200/ Speedmaster 1200 (2017-25)
Upgrade the air intake system of your Triumph Bonneville Bobber 1200 or Speedmaster 1200 with the DNA Air Filter for Triumph Bonneville Bobber 1200/ Speedmaster 1200 (2017-25). This high-flow replacement filter uses DNA’s advanced FCd (Full Contour design) to provide increased airflow while maintaining excellent filtration efficiency.
The set includes two filters, making it suitable for the motorcycle’s existing factory air box. Each filter also includes a specially made stainless steel supporting frame for added support and fitment. Visit our website for more products Dirt Street.
Advanced FCd Filter Design
The DNA Air Filter uses an advanced FCd (Full Contour design) that follows the shape of the air box. This design helps make effective use of the available filtering area while supporting increased airflow.
Moreover, the filter uses four layers of DNA Cotton and delivers a filtering efficiency of 98%-99%. This combination provides high filtration while allowing more air to pass through the filter.
34.74% Increased Airflow
The DNA Air Filter for Triumph Bonneville Bobber 1200/ Speedmaster 1200 (2017-25) delivers 34.74% more airflow than the stock filter. DNA records an airflow of 167.48 CFM, compared with 124.30 CFM for the Triumph stock filter.
These figures were measured at 1.5”H2O, corrected at 25°C. The increased airflow gives the filter a clear advantage when replacing the standard filter.
Two-Filter Set with Stainless Steel Frames
This DNA filter set contains two filters, with each filter supplied with a specially made stainless steel supporting frame. The frames provide support while the filters sit within the motorcycle’s existing air box.
As a result, the replacement process remains straightforward. Simply follow the installation instructions provided in the workshop manual.
High Filtration Efficiency
The four-layer DNA Cotton construction provides 98%-99% filtering efficiency according to the supplied specifications. The filter captures dirt while allowing high airflow through the intake system.
DNA designs this filter for road use, making it suited to riders looking for a high-flow replacement filter for their Triumph.
Airflow Data
The supplied airflow figures show the difference between the DNA filter set and the Triumph stock filter set:
- DNA Air Filter Set: 167.48 CFM
- Triumph Stock Filter Set: 124.30 CFM
- Increase in Airflow: 34.74%
- Filtering Efficiency: 98%-99%
Fitment and Installation
The DNA Air Filter for Triumph Bonneville Bobber 1200/ Speedmaster 1200 (2017-25) is designed to work with the existing factory air box. Installation remains simple when you follow the instructions provided in the motorcycle workshop manual.
The set is supplied with two filters and their stainless steel supporting frames, providing a complete replacement filter setup for the application.
Why Choose This DNA Air Filter?
With its FCd design, four-layer DNA Cotton construction, 98%-99% filtering efficiency, and 34.74% airflow increase, this filter set offers a practical upgrade over the Triumph stock filter.
For riders seeking a high-flow replacement for road use, this DNA filter set combines increased airflow with high filtration efficiency while retaining compatibility with the factory air box.


















Reviews
There are no reviews yet.