JT SPROCKETS JTF428 Front Sprocket YAMAHA YZ / SUZUKI RM 80 (1978–1980)
The JT SPROCKETS JTF428 front sprocket is designed for classic bikes like the Yamaha YZ 80 and Suzuki RM 80 from 1978 to 1980. Made from hardened C45 steel, it ensures excellent wear resistance and precise fitment, ideal for restoration and trail use.
Technical Features:
- High-strength C45 steel with heat treatment
- CNC machined for exact tolerances
- Lightweight profile optimized for performance
- Compatible with 428 chain
- Specific fitment for Yamaha YZ 80 and Suzuki RM 80 (1978–1980)






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