MITO.21M (2016 World Champion Engine) 

Displacement: 3,50 cc    R.P.M. (max power): 41.500 RPM    Bore x stroke: 15,88x17,60 mm    Sleeve: 9 ports    Rear ball bearings: ceramic    Front ball bearings: ceramic    Crankshaft: 14,5 mm - turbo - tuned    Carburetor: aluminium - 9 mm - rotary     Glowplug: Turbo (C8TGTB)    Exhaust position: rear    Starting: standard    Weight: 318 g    Fuel type: 25% nitro

Available versions:
- MITO.21MS with rear and front ceramic ball bearings
- MITO.21MA with rear and front steel ball bearings
- MITO.21MH with rear ceramic and front steel ball bearings

FEATURES

Rear ball bearings: The new ball bearing reduces the inertia of the rotating masses and increases the engine's scavenging. You can see both the ball bearing and the manufacturing process result in the picture above. These novelties give an increased throttle response and a higer top speed.

Sleeve: The sleeve has 9 transfer ports and an exhaust with booster ports. The special shape and positioning of the ports, covered by a patent, improve the internal fluid-dynamics to obtain the maximum possible performance.

Crankshaft: The crankshaft is grinded to increase the mixture flow and has a special shape to reduce turbulences inside the crankcase. The balancing is done by 3 inserts made of tungsten alloy and the inlet has a silicon filling to reduce the weight of the crankshaft to improve acceleration. The ball bearing was lowered to 5mm.

Patented: The shifted carburetor grants a better mixture flow inside through the crankase's intake. This gives the engine an improved fuel efficiency and a better power curve.

Conrod: The R7 conrod is made from a superlight alluminium which has been checked ultrasonic. The specific form of the R7 creates little turbulence inside the engine while running.

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.

Ceramic ball bearings: The rear ball bearing has high quality ceramic balls to minimize wear and inertia to improve acceleration and fuel consumption.

Compression rings: The ignition timing is controlled with these little rings of various thickness. To change the ignition timing you can add or remove a ring of a certain thickness.