Compatible with TKM, Rotax, and G Max karts. This is a 219H reinforced drive chain designed for karting applications including go kart and race use. Chain length options: 126 links or 138 links. Constructed from steel. Pitch: 7.77 mm. Roller link width: 5 mm. Bushing diameter: 4.59 mm. Link plate thickness: 1.2 mm. Roller link plate height: 7.5 mm. Pin diameter: 3.01 mm. Overall width with rivets: 11.7 mm. Average tensile strength: 850 kgf. Pre-stretched and anti-fatigue. Features wear resistance suitable for driven chain applications. Fits Rotax, TKM, and G Max race karts. Compatibility Disclaimer: This is an aftermarket replacement part. Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.