Project Description

For the KZ class


Modena Engines Launches the KK1 Engines in order to create an engine that can offer unprecedented levels of performance.

– Architecture designed to keep overall dimensions and weights down to a minimum.
– Rear-tilted cylinder to improve intake flow.
– Carter with removable insert built with thermally insulating material, to maintain mixture temperature and improve volumetric efficiency.
– Resin insert with modifiable shape and volume.
– Separate lubrication system between the gear shift and the primary transmission.
– Water-cooled gear shift to lower temperature of lubricating oil and reduce amount of oil needed.
– Head dividable into two parts with dome machined from solid.
– Bronze ring at the top of the cylinder.
– Main bearings housed on removable metal bushing.

Homologation Fiche
Tech. data sheet

Engine informations

Displacement 125 cc
Homologation number 1/M/21
Categories 125 KZ2/KZ1
Bore/stroke 54 x 54,43 mm
Max power 44 cv (DIN)
Max rpm 15000 rpm
Cooling Water
Ignition PVL 105-458 (homologated))
Transmission 6 speed gearbox
Clutch 5 dry disks
Inlet type reed valve
Dell’Orto VHSH 30 (homologated))
Connecting rod base center 106 mm
Combustion chamber volume Minimo 11 cc (homologated))
Transfer ports number 5
Exhaust ports number 3
Main transfers 130,5°±1°
Secondary transfers 126,5°±1°
Fifth transfer 128,5°±1°
Exhaust port 195°±1°
Exhaust pipe Espansione
Fuel/oil ratio 4%
Dry weight 18 Kg

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