JT SPROCKETS Standard Steel Sprocket 1131 - 420 (Manufacturer part number: JTR1131.52): a simple and reliable transmission part to replace the original sprocket or modify the gearing. Made from C49 steel, it features a discreet black finish and a tooth design suitable for urban use, light off-road, and roadsters. Ideal for riders looking for a standard sprocket ready to fit into a 420 chain kit.
- Brand: JT SPROCKETS
- Material: Steel (C49)
- Color: Black
- Number of teeth: 52 teeth
- Chain pitch: 420
- Type: Standard
This sprocket is suitable for both maintenance replacement and torque/ratio adjustment through the change of pinion or sprocket. Its design conforms to JT Sprockets' standard dimensions, making it easy to mount on original flanges and bearings. It is aimed at urban, light motocross, and roadster uses, and fits a variety of mopeds and small displacement motorcycles.
Examples of compatible models:
- RIEJU MRT 50 SM (2025 - 50 cc)
- GILERA RCR 50 (2020 - 50 cc)
- DERBI SENDA 50 R DRD X-TREM (2019 - 50 cc)
For safe installation, check the condition of the pinion, chain, and fasteners before installation and adhere to the manufacturer's torque specifications.
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