Engine IAME OK-J (Junior) R125KJ - 2026 !

Engine IAME R125KJ – Category OKJ

The IAME R125KJ engine is specifically developed for the CIK-OKJ category, delivering consistent performance, reliability and optimized thermal control for junior classes. Derived from the successful IAME platform, it integrates technical solutions designed to ensure ease of driving, stable operation and long service life.

The engine architecture with balance shaft and CNC-machined components reduces vibrations and improves smooth operation, providing progressive and controllable power delivery, ideal for OKJ competition use.

Main features

✔ Dual-part cylinder head
✔ Decompression valve
✔ Main roller bearings
✔ Balance shaft
✔ CNC reed valve intake conveyor
✔ Removable inlet spacer
✔ Separate reed valve carrier
✔ CNC-machined exhaust manifold

Technical data

🔵 Class: CIK – OKJ
🔵 Type: single cylinder, 2 stroke
🔵 Displacement: 124.08 cc
🔵 Bore: Ø 53.89 mm
🔵 Max bore: Ø 54.08 mm
🔵 Stroke: 54.40 mm
🔵 Inlet: reed valve
🔵 Lubrication: oil-fuel mixture
🔵 Ignition: digital
🔵 Transmission: Direct Drive
🔵 Cooling: water cooled
🔵 Balance shaft: present
🔵 Starting: push start
🔵 Carb model: —
🔵 Max power: N.D.
🔵 Max torque: N.D.
🔵 RPM limiter: 14,000 rpm

Base equipment included

✔ Homologated digital electronic ignition
✔ H.T. coil / electronic box with 14,000 rpm limiter on vibration dampers
✔ NGK BR10EG spark plug
✔ Spark plug cap
✔ Z12 splined sprocket
✔ CIK-OKJ homologated exhaust with silencer
✔ Engine mount

Not included

❌ Carburetor not included
❌ Engine plate not included
❌ Intake filter not included
❌ Cooling system not included