TM Kart Engine OK-S3 Junior

The TM Kart OK-S3 Junior is a 125 cc, 2-stroke direct drive engine designed by TM Racing for the CIK-FIA OKJ category. It delivers strong performance, high reliability and low running costs, making it ideal for young drivers competing at national and international level.

Included Accessories

✔️ TM OK-S3 Junior engine
✔️ Ignition coil
✔️ CDI unit
✔️ Ground cable
✔️ Exhaust springs

Accessories not included

❌ Engine plate
❌ Exhaust
❌ Carburettor
(Available separately on our website in the dedicated section)

Technical Specifications

🔵 Displacement 124.36 cc (bore 53.95–54.08 mm, stroke 54.40 mm)
🔵 CIK-FIA OKJ category
🔵 Reed-valve intake
🔵 Single-cylinder 2-stroke direct drive
🔵 Liquid-cooled
🔵 Maximum RPM approx. 14,000

Advantages

🔵 Simple, durable and reliable mechanical design
🔵 Stable and easy-to-manage performance
🔵 Low maintenance costs
🔵 High-quality materials and TM Racing engineering