real power for your model airplane, PPG, Ull and many more applications


Introducing the powerful two-stroke 140ccm opposed twin-cylinder model gas engine with processor-controlled ignition and an awesome power-to-weight ratio. The special cylinder heads make cooling easier during long-time aerotow with full throttle and hot environment conditions. And now, it's also available in a starter-equipped version!

This engine boasts the most powerful and best power-to-weight ratio in its class, with a fully CNC-made crankcase and backplate out of 7075 aluminum alloy. It also features three bearings on the crankshaft.

It is easy to reinstall instead of the ZDZ 112B2RV-J -  the same backplate pattern and engine lenght.

The new construction technology with separate cylinder heads and a special combustion chamber shape and spark plug position delivers maximum power. The separate cylinder heads allow for multiple tuning subversions, including a modified combustion chamber for an even smoother run, increased cylinder head surface for easier cooling, and the option for doubled spark plugs for better safety.

The ZDZ 140B2RV-G features a well-tested and proven technology of cylinder head gasket, similar to former ZDZ engines from the late 1990s and the actual ZDZ 250 and ZDZ 500B4 models. This engine brings an awesome power-to-weight ratio, making it a lightweight, durable, and reliable powerhouse.

Its run and fast transitions are superiorly smooth, with the lowest level of vibrations you could imagine. The fuel intake of this engine is managed by a rotary valve, which, contrary to the usual reed valve system, allows for much more precise control over the timing and brings a much longer lifetime without the need to change reeds.

Experience the unmatched performance of the ZDZ 140B2RV-G, and take your model aircraft to new heights.

Here you can downloat a 3-view installation drawing 

Here you can download 3D model of the engine empty shell



Weight: 2630g without ignition/ 3870grams with el. starter
RPM range: 1000-8500RPM
Ignition: Processor. controlled 4,8-7V
Fuel mixture N95+rec.oil: 1:35
Recomm twinblade props: 28x12, 29x9,29x10, 30x10
Recomm. threeblade props: 27x10/9

Pilots, planes and installations

Werner Kohlberger (Austria)


16.6.2022 New service logistic announced. See more on http://www.facebook.com/zdzrc

5.1.2022 Magic year of the 30th ANNIVERSARY of the ZDZ engines on the market just started. See more here:

22.05.2020: New ZDZ 210R2-J CHAMPION released and added to our website.

See more here.

27.11.2019: New distributors in Finland and United Arab Emirates

More details on our facebook or in contacts

28.5.2019: ZDZ 500B4-JSR added to our website 

The biggest engine of ZDZ line now optionally equipped by belt reduction gear. Check this beast in QUAD section. 

13.2.2019: New prices set for engines in eshop.

The most of bigger engines are now cheaper. Go and check, register your engine in our form (see in the center of page) and get even lower price for your next purchase.  

13.1.2017: Second service and support center in Czech Republic/ druhé středisko  servisu a podpory pro ČR

RC modely-PH
Václavské nám. 254
Kutná Hora
284 01
tel 777152293 email:


26.09.2015: New videos added 


07.02.2015: Pages update 

Dear Friends,
since yesterday 7PM till today 11Am, we have problems with email servers forwarding because of changing and adding domain names into our systems. If you sent anything within that period and received returning message, please forward your message once again.
Thank you and sorry for inconveniece.

04.02.2015: Pages update 

New distributor for BENELUX and UAE, see contacts-distributors for details. 

01.02.2015: Pages update 

New items added to the shop. especially spare parts were significantly updated and filled. And more to come........

31.01.2015: Pages update 

ZDZ 90RV-J,  ZDZ 112B2RV-Jch, ZDZ 180B2RV-Jch, ZDZ 250B2RV-J and ZDZ 224B4-J pages  update with new animation and downloadable 3D model where you can measure anything from installation dimms.

Also new items were added into spare parts section in eshop. 

08.01.2015: E-shop filled with all engines. 

Since today for those countries where we do not have oficiaal dirstributor our customers can order engines directly from our eshop. Soon we will add parts and accessories to it as well. 

20.12.2014: ZDZ 112B2RV-J Champion

Already well known for its smooth run and awesome power to weight ratio two stroke 112ccm opposed twincylinder model gas engine with procesor controlled ignition. Now fully CNC made crankcase and backplate out of 7075 aluminium alloy so very clean design bringing better quality as well. Weight increased compared to former 112B2RV-J is only 50 grams. 

ZDZ 112B2RV-J Champion

17.12.2014: Technical support in France

We have agreed with one of our most experienced pilots and friend Nicolas Gastaldi, that he will kindly support users in France. In case you have a problem with setup or tuning the engine or need advice, please contact Nico on email nicogasta@hotmail.com. Of course you can contact us directly as well, but we speak only english unfortunatelly. Thank you Nico for your help and very good representation of ZDZ engines at all. 

ZDZ 180B2RV-J  Champion finally available.

This the most powerfull engine in its class now comes with much nicer design with fully CNC machined crankcase and backplate and some other modifications like forged steel con rods to bring super long lasting power and durability.