Kayfun Prime RTA - SvoëMesto


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The SvoëMesto Kayfun Prime is a rebuildable tank atomizer specifically designed for mouth-to-lung vaping and that style's characteristic tighter air flow for a more cigarette-like experience. Six adjustable air flow levels allow users to select from a very tight draw, to a loose cigarette-style draw.

The Kayfun series is known to produce some of the most exceptional and accurate flavour reproduction on the market, and the Kayfun Prime does not disappoint in this regard. Users will be greeted with true flavour in this easy to rebuild and wick atomizer.

The Kayfun Prime follows a similar design pattern as his little brother, the Kayfun Mini V3. A fully adjustable liquid control gives you full control over your liquid flow by turning the tank clockwise to close it down, or counter-clockwise to open it up. However, thanks to SvoëMesto’s pressure based feeding system, fine tuning is not required with the majority of setups. After closing the liquid control, the Kayfun Prime can be filled through the top. You can access your coil by removing the tank, regardless if it’s filled or not. The build deck features Kayfun's classic two post build deck style, which will easily hold a coil for this style of low wattage vaping.

Filling the tank is also made easy. Just close off the juice flow completely by turning the tank clockwise, then unscrew the top cap, fill your liquid, re-attach the top cap, then open the juice flow control back up by turning the tank counter-clockwise.

A redesigned evaporation chamber makes it smaller than the Kayfun 5's, which yields greater flavour production on mouth to lung vaping.

Recommended Build: Vapes by Enushi recommends coils that are 2.0 to 2.5mm in diameter, 28 gauge Kanthal, spaced coils between 4 to 7 wraps for standard wattage vaping at 10 to 18 Watts.

The Kayfun Prime is made from the same high class materials as all of the other Kayfun tanks.

The surface has a brushed stainless steel finish, and includes both a full stainless steel tank as well as a borosilicate (Pyrex) glass tank.


  • Height: 45.5mm (excluding drip tip and connector)
  • Diameter: 22mm
  • Tank Capacity: 2mL (4.5mL Extension Tank can be purchased separately)
  • Air flow sizes: 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2.0mm


  • Stainless steel components: WNr. 1.4404 (X2CrNiMo17-12-2), AISI 316L, (V4A)
  • Glass tank sleeve: Borosilicate glass
  • Insulators: PEEK, POM-C
  • O-rings: NBR 70


  • Anti heat drip tip with black POM (Delrin) inlay (engraved)
  • Top filling
  • Borosilicate glass
  • Liquid control (fully adjustable)
  • PEEK insulator
  • External airflow control
  • 316L stainless steel
  • 510 connector
  • Serial number for authentication
  • Easy assembly and maintenance


  • 1X Kayfun Prime with steel tank ("Berlin" engraved)
  • 1x Glass tank
  • 1x Spare parts kit
  • 1x Manual

Digital Manual can be downloaded >>HERE<<.

WARNING: It is highly recommend that you fully clean out this product before the first time you use it. While the factory does a decent job at removing dust, shavings, machining lubricants and greases, there is still the potential for trace elements to remain, and it is best recommended that you do an additional cleaning to meet your standard of cleanliness.

DISCLAIMER: Rebuildable atomizers are for experienced vapers with access to meters and a working knowledge of Ohms Law, Watts Law, battery safety, and how general electricity works. Please ensure care is taken as to not cause damage nor harm to the atomizer, your battery, the vaping device, yourself, others, or personal property.

Wicks & Wires Vape Shoppe is not responsible for misuse of product, or dangerously low coil builds. Wicks & Wires Vape Shoppe is not liable for the use of improper batteries for your builds.