OBS Engine Nano 25mm Single-Coil RTA

CAD $39.99

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OBS’s Engine Nano 25mm is a revised version of their most popular RTA to date. It delivers the same excellent airflow, simple fill mechanics, and high juice capacity, but now with a revised deck that’s ideal for single coil builds.


Most RTAs on the market fall into one of two categories.

Either they’re tight and highly restricted mouth-to-lungs, or they’re severely loose and open direct-lungs.

And while there are many vapers who’d prefer something in between—a restricted lung hit—there really aren’t a lot of options. So for years, vapers hunting for this elusive draw-style have been debasing their expensive MTL rebuildables by drilling holes in their airflow ports.

No more.

The OBS Engine Nano is the perfect restricted-lung-hit RTA. It offers that smooth-yet-snug pull that so many vape enthusiasts have been hunting for.

It achieves this with completely unique airflow and build-deck mechanics. Its large top-airflow ports are designed to smoothly channel air down the sides of the chimney, where it is precisely restricted before reaching your coils. Because the build deck doesn’t make contact with any other parts of your tank, even with a restrictive airflow, your tank stays relatively cool.

The end result is an incredibly flavourful and satisfying vape—one that can’t be matched by any other RTA on the market.

OBS Engine Nano 25mm RTA features:

  • 25mm diameter
  • 5.3 mL Capacity
  • Satisfying restricted-lung hit
  • Top airflow
  • Simple side-filling
  • “Floating” build deck that keeps your tank cool
  • Designed for single-coil builds
  • Incredibly simple wicking with bottom juice ports
  • Excellent flavour

OBS Engine Nano Contents:

  • OBS Engine Nano RTA
  • Replacement parts
  • Prebuilt Kanthal coils
  • Tools
  • Cotton pad

Additional information

Additional Information


Black, Stainless Steel

150 g
8 × 6 × 4 cm


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These are advanced devices, please make sure to follow all safety precautions when operating rebuildable tanks and drippers. You should have great knowledge in battery safety, ohms law and have all tools required for safe use. Test all of your builds with an ohm-reader prior to using in your mod/device. We also advise against using mechanical mods. Make sure all of your batteries are wrapped properly, undamaged and charged with an external battery charger. These chargers provide a much more reliable charging current and utilize load balancing to ensure your batteries are married. is not responsible for any injury/damage associated with mis-use of these devices and Li-On Batteries, Li-Po Batteries and Chargers. By purchasing this product you acknowledge this information.


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