Serin Boro RBA MTL Kit - Early Bird
The MTL extension kit for the Serin RBA, designed by Early Bird, allows you to configure the atomizer for a true mouth-to-lung (MTL) setup.
It includes an MTL drip tip, a complete inner chamber, as well as three airflow pins to precisely adjust the draw according to user preference.
Serin Boro RBA MTL Kit - Early Bird
Fine-tune your vaping experience with the airflow kit for Serin RBA Boro bridges.
Dedicated MTL configuration
This MTL extension kit for the Serin RBA reduces airflow to achieve a tight draw, suitable for mouth-to-lung (MTL) vaping.
It includes an MTL drip tip, a complete evaporation chamber, and a dedicated internal component designed to precisely redirect airflow.
The kit comes with three airflow pins measuring 0.8 mm, 1.0 mm, and 1.2 mm, allowing accurate draw adjustment.

Contents of the packaging
- 1 Proprietary MTL Drip Tip
- 1 Atomization Chamber
- 1 Airflow Fitting
- 1 Pin 0.8mm
- 1 Pin 1.0mm
- 1 Pin 1.2mm
In addition
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Customer reviews
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Gabriel B.
Published Mar 12, 2026 at 09:40 pm (Order date: Mar 09, 2026)5Really like the design




















