JT. Steel Standard 1131 - 420 SprocketRef : JTC00961A / 1074876003

Manufacturer Ref: JTR1131.50 - JT Sprockets steel sprocket, designed to replace the original part or modify the final drive ratio. Suitable for 50cc motorcycles and urban, roadster, or cross uses, this standard 50-tooth sprocket fits a 420 pitch chain for a reliable and easy-to-maintain transmission.

• Brand: JT SPROCKETS
• Material: C49 carbon steel — black finish
• Number of teeth: 50
• Chain pitch: 420
• Type: Standard

The JTR1131.50 sprocket is machined according to JT standards: tooth profile suitable for 420 chains, surface treated to limit corrosion and ensure uniform wear. Its standard profile facilitates installation as a direct replacement without modification of the swingarm or the pinion. Ideal for those looking to adjust the gearing (more torque at low revs or lengthening depending on pinion/sprocket change) while maintaining correct chain geometry.

Common compatibilities: RIEJU MRT 50 SM (2025), GILERA RCR 50 (2020), DERBI SENDA 50 R DRD X-TREM (2019). Always check the pitch and number of teeth before ordering.