LRP ZZ.21C Ceramic Square Stroke Nitro Competition Engine

The all-new lrp ZZ.21C Ceramic Square stroke engine exclusively made by O.S. Engines is the successor of the internationally very successful ZZ.21.Ceramic Long Stroke. More precise response characteristics in the lower RPM range and less fuel consumption were the goals in the improvement of the power aggregate.

This could be successfully implemented with a square stroke design and a special, new developed crankshaft. The 14.0mm strong crankshaft has a DLC coating as well as a silicone insert. It is also precision-balanced just like its predecessor and works very smoothly in combination with the ceramic bearing.

Due to the reduced fuel consumption, a longer run time and a more controllable power delivery could be realised.



Pictures and videos



  • NEW and INNOVATIVE LCG engine head - 17mm lower than a standard engine head for significantly improved handling and jumping of your car
  • SQUARE STROKE engine design - For smooth bottom end power and torque
  • RUNTIME MONSTER - Massively increased runtime compared to our Long Stroke version!
  • CERAMIC rear ball bearing
  • FREE LRP WorksTeam WT3 glow plug included
  • LRP WorksTeam racing specification
  • Lightweight, DLC coated, tungsten precision-balanced crankshaft with silicone insert
  • 6.0mm and 6.5mm Aluminium carburettor inserts
  • Lightweight piston and conrod for higher RPM and more power
  • Special carburettor needles for smoother throttle response and higher fuel mileage
  • Thermal protected carburettor
  • 1/8th Offroad high-end competition engine
  • Weltweit Rennlegal

Technical data

Cubic capacity .21 (3.46ccm)
Bore 16.40mm
Hub 16.40mm
Power 2.99 HP*
RPM 40.500 RPM*
Number of ports 3 + 1
Glow Plug LRP Turbo WT3 (#35135)
Carburetor XTEC thermal protected WorksTeam carburetor, Aluminium 6.0mm and 6.5mm inserts
Weight 355g
Class 1/8th Offroad Buggys/Truggys
* Figures may vary depending on used fuel, muffler and tuning

Spare parts
Tuning parts