Drive Sprocket Front 13T 420-size YSR50

[Kitaco 530-0024213 Drive Sprocket Front 13T 420 Size YSR50 Kitaco 530-0024213]
The timing for replacing sprockets is very ambiguous, as there are no clear standards.
"Wear on the tooth tips" is a good indicator to use in this situation.
When the tooth tips become pointed, or the belly or sides are worn down, it's time for a replacement.
Simultaneous replacement of front and rear sprockets and chain If you only replace one of the three, the worn parts that are not replaced will prevent the new parts from performing at their full potential and durability, leading to an earlier replacement time. Therefore, considering the long term, it is recommended to replace all three simultaneously as they will last longer.
Front sprocket (engine side).
Made from S45C (high carbon steel), which is lightweight and highly durable.
Sprockets are consumables.
As a general guideline for normal driving, inspect the sprocket every 1000 km.
(Regular lubrication significantly extends the life of sprockets and chains.)
Rear sprocket tooth count ÷ Front sprocket tooth count = reduction ratio. A higher value indicates a focus on acceleration, while a lower value indicates a focus on top speed.
Compatible models: YSR50・RD50・MR50・YB50・GT50 OR50・GAG Pocke/Fogel all models
YB-1 58E all models
YB50 58E
Birdy 50 FNO.BA41A-100001~ etc.
*The image is for illustration purposes only, and the design and specifications of the products shown may change without prior notice. Please understand.