



EK CHAIN Kit 428SROZ 14/52-134, designed for replacing the transmission on roadsters. This kit includes the chain, the output sprocket, and the standard crown for a complete overhaul of the rear drivetrain. Steel/steel finish and steel components provide a sleek appearance and maximum compatibility with original mounts.
This kit is suitable for routine maintenance and replacement when it's time to change the chain, sprocket, and crown. The 134 links provide sufficient length for many motorcycles; an adjustment (shortening) may be necessary during installation to achieve the correct tension of the transmission.
Main compatibilities: YAMAHA MT-125 (2023, 2024, 2025). Before installation, check the exact compatibility with your model and year to confirm the pitch 428 and the ratio 14/52.
Manufacturer reference: Not provided.