Engine IAME R125Z – KZ/KZ2 - NEW!!

Engine IAME R125Z – KZ/KZ2

The Engine IAME R125Z is the new gearbox engine developed for KZ and KZ2 categories. CIK-FIA homologated, it represents a new generation of racing engines, based on experience gained in international competitions with the Screamer VI and on technical solutions from the Race Department.

The project is built around a completely redesigned crankcase, lighter and more compact, combined with innovative cylinder concepts and optimized components to ensure efficiency, fast response and reliability under demanding conditions. The goal is to set a new performance benchmark in the KZ/KZ2 category.

🔧 Engine type: single cylinder 2 stroke
🔧 Category: 125 cc
🔧 Class: CIK-FIA KZ / KZ2
🔧 Bore: Ø 54.00 mm (max Ø 54.08 mm)
🔧 Stroke: 54.40 mm
🔧 Ports: 5
🔧 Intake: reed valve
🔧 Lubrication: oil mixture
🔧 Ignition: analog
🔧 Transmission: 6 speed gearbox
🔧 Cooling: water
🔧 Starting: push start
🔧 Carburetor: Dell’Orto VHSH 30
🔧 Max power: –
🔧 Max torque: –
🔧 Max RPM: –

🟦 Crankcase
Newly designed, compact and lightweight crankcase to improve structural rigidity and chassis integration.

🟦 Cylinder
Innovative cylinder concept with race-derived solutions to improve flow efficiency and performance consistency.

🟦 Cylinder head
Designed to ensure efficient and uniform cooling, contributing to thermal stability in racing conditions.

🟦 Thermal group and racing components
High-performance solutions from the Race Department focused on reliability and mechanical precision.

🟦 Transmission
6-speed gearbox developed for intensive racing use, with fast and precise shifting.

🟦 Intake and fuel system
Reed valve intake system combined with Dell’Orto VHSH 30 carburetor for immediate throttle response.

🟦 Cooling
Water cooling system optimized to maintain stable operating temperatures during competition.