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For the KZ class

A unique first of its kind engine.


- Architecture conceived to keep the overall dimensions and weights to a minimum.
- Cylinder inclined towards the rear, to improve the suction flow.
Inlet type
- Carter with removable insert in thermally insulating material, for
contain the temperature of the aspirated mixture and improve the
volumetric efficiency.
- Resin insert modifiable in shape and volume.
- Separate lubrication between gearbox and primary transmission.
- Water-cooled gearbox to lower the oil temperature
lubricant and to contain the amount of oil.
-Domposable head into 2 parts with dome machined from solid.
- Bronze ring shown in the upper part of the cylinder, optional.
- Main bearings housed on a removable metal bushing.

Engine Information

Cilindrata125 cc
Category125 KZ2/KZ1
Bore/stroke54 x 54,43 mm
Max power44 cv (DIN)
Max rpm15000 rpm
IgnitionPVL 105-458 (homologated)
Transmission6 speed gearbox
Clutch5 dry disks
Inlet typeReed Valve
CarburetorDell’Orto VHSH 30 (homologated)
Connecting rod length106 mm
Combustion chamber vol.Minimum 11 cc (approved)
Number of transfers5
Number of exhaust ports3
Main transfer opening130,5°±1°
Height of secondary ports126,5°±1°
Central pouring height128,5°±1°
Discharge height195°±1°
Expansion mufflerExpansion
petrol mixture4%
Dry weight18 Kg

homologation fiche

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Data Sheet

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