TM KART S3-OKN

The TM KART S3-OKN is a high-performance, single-cylinder, 2-stroke engine designed for the OK category under CIK/FIA regulations. Built for maximum reliability and performance, the S3-OKN features a bore of Ø 53.95 mm (maximum Ø 54.08 mm) and a stroke of 54.40 mm, delivering a displacement of 124.36 cc.

This engine features a 5-port cylinder layout, a reed valve inlet system for efficient airflow, and a water-cooling system to maintain optimal operating temperatures. Lubrication is achieved via a pre-mixed oil/fuel blend.

The S3-OKN is equipped with a digital ignition system featuring adjustable advance and fully compliant with FIA Karting homologation standards. The engine utilizes direct drive transmission, includes a balancer shaft for reduced vibration, and is started via push start.

The carburetor model is the TM KART N1, also homologated by FIA Karting. With a maximum RPM limit of 15,000, the S3-OKN delivers uncompromising performance for competitive kart racing.

Key Specifications:

• Model: S3-OKN

• Class: CIK/FIA – OK

• Bore: Ø 53.95 mm (Max Ø 54.08 mm)

• Stroke: 54.40 mm

• Displacement: 124.36 cc

• Ports: 5

• Inlet System: Reed Valve

• Lubrication: Oil Mixture

• Ignition System: Digital with adjustable advance – FIA Karting Homologated

• Transmission: Direct Drive

• Cooling System: Water

• Balancer Shaft: Yes

• Starter: Push Start

• Carburetor Model: TM KART N1 – FIA Karting Homologated

• Max RPM Limit: 15,000 RPM