Novarossi Mephisto 4 Port .21 Off Road Engine (Turbo Plug) (Ceramic Bearing)

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This Novarossi Mephisto 4 Port .21 Off-Road Nitro Engine features a front Steel Bearing and a rear Ceramic Bearing. Novarossi also offers this engine with front and rear Steel Bearings (NVRMEPHISTO.21OFF/A).


  • Rear cover: The rear cover presents a round shape to optimize the filling and reducing the dead spaces. the steel plate is to reduce friction and to expand the lifespan of the conrod.
  • Sleeve: The sleeve has 4 transfer ports to supply a linear power output and to keep fuel consumption low.
  • Crankshaft: The crankshaft is manufactured with a larger bore intake to increase the mixture flow and has a special shape to optimise gas-flows in the engine. The durability has been significantly improved with the DLC coating.
  • Combustion chamber: The combustion chamber is supported by an O-Ring which is placed between the combustion chamber and the crankcase to reduce the vibrations of the combustion chamber.
  • Rear ball bearing: The rear ball bearing has high quality ceramic balls to minimize wear and inertia to improve acceleration and fuel consumption.
  • Conrod: R4/18 conrod, redesigned and made with a special aluminum alloy that allows it to have a high resistance while maintaining the lightness and performance of the previous R4/17.
  • Carburetor: The three tuning needles gives a better idle and improves the ability of the engine to return to low rpm after throttling.
  • Cooling head: Redesigned to improve the flow of air and thus increase cooling and ensuring an optimal center of gravity.

Recommended Exhaust:

  • 51007 (EFRA 2135) tuned pipe & 41021 manifold: The 51007 EFRA 2135 tuned pipe, made in collaboration with Hipex, coupled with manifold 41021, allows to maintain the same consumption of the kit 9901/41021 increasing further performance.

R.P.M. (max power): 36,500 RPM
Bore x stroke: 16.42x16.42 mm
Sleeve: 4 ports
Rear ball bearings: Ceramic
Front ball bearings: Steel
Crankshaft: 14 mm - turbo - DLC
Carburetor: Plastic - 9 mm - slide
Glowplug: Turbo (CTO6)
Exhaust position: Rear
Starting: Standard
Weight: 365 g
Fuel type:
25% nitro

This product was added to our catalog on November 15, 2018

Friday, Feb 7 2020 (4 months ago)
Novarossi Mephisto 4 Port .21 Off Road Engine (Turbo Plug) (Ceramic Bearing)
Awesome .. this engine has been the most reliable engine I have raced . No flame outs, always long run times up to 10 is possible, smooth bottom end with plenty of power, massive top end that just keeps pulling to no end.
Friday, Dec 20 2019 (5 months ago)
Novarossi Mephisto 4 Port .21 Off Road Engine (Turbo Plug) (Ceramic Bearing)
The engine is powerful, smooth and smooth in performance throughout the race period. It was run with reds exhaustX-ONE 2104 Torque One-piece pipe ? Engine number gives fuel savings of 10 minutes.