Atom Vortex .21 Nitro Off-Road 3-Port Engine


The Atom Vortex .21 is a short stroke nitro engine with a lightened low centre of gravity cooling head, Turbo crankshaft, 3-port, 3 needle carburetor engine that is very similar to the discontinued O.S. Racing VZ-B V-Spec Speed engine that won multiple IFMAR World Championships.

These engines have proven to be very quick and reliable.

We sold out of these engines very quickly last time so please don't hang on if you plan on buying one.

We have a full spares backup service, with well priced spares on the shelf should you need anything.


Displacement :3.46cc
Bore :16.60mm
Stroke :16.0mm
Practical RPM :3500 ~ 40000 RPM
Power Output :2.58 hp / 35000 RPM
Weight :326 grams
Ports :3 Intake Ports
Construction Type :ABC

*Requires P3 Hot Turbo Glow Plug


Some Driver feedback from NitroX regular Daz Moult

"Used this engine and pipe combo for the last 2 months and its defo got "PPR" (Punch-Power-Runtime) keeps up and overtakes engines three times the price ,runs faultless ticks over perfect this is my engine of choice for 2016 nitroxcross roll on the summer 👍👍👍👍👍👍"

What more can we say.

Priced at a stunning £149.95 for engine and EFRA 2106 pipe.

Engine only £125, Pipe £38 (See other listings or contact us)