Description
JT Front Sprocket for Yamaha Blaster
This JT front sprocket fits 1988–2006 Yamaha Blaster YFS200 models and uses a 520 chain. Available in 12, 13 or 14 teeth, it lets you replace a worn sprocket or adjust your final-drive gearing.
The JT JTF1554 sprocket is manufactured from SCM420/20CrMo chromoly steel alloy.
Choose your tooth count
With the same rear sprocket and tire size:
- 12 teeth: Lower gearing for greater torque multiplication and higher engine RPM at a given speed.
- 13 teeth: The standard front tooth count listed by JT for the Yamaha Blaster.
- 14 teeth: Taller gearing for lower engine RPM at a given speed. Actual top speed depends on whether the engine can pull the gearing.
Quantity and installation
Each purchase includes one front sprocket in your selected tooth count.
Inspect the chain, rear sprocket and retaining hardware before installation. Check chain length, adjustment range and clearance when changing tooth count. Follow the Yamaha service manual for installation and chain adjustment.
Pair it with our JT 40-tooth steel rear sprocket.
Shop more Yamaha Blaster parts at The Blaster Store.
Questions about gearing or fitment? Contact KOR or call (860) 230-5003.











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