Manufactured to exacting tolerance using SCM420 chromoly st
Each JT 428 countershaft sprocket is heat treated then bead blasted to reduce surface friction and enhance chain and sprocket longevity
Every JT sprocket goes through up to 25 production stages and 10 individual quality control checks before it is ready to leave the factory
Sold individually
Product Note:
Specification
Details
Chain Pitch
428
Material
Steel
Position
Front
Teeth
15T
Vehicle Fitment
Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.
BMW
F 650 GS 2001-2007
G 310 GS 2017-2020
G 310 R 2016-2020
Yamaha
YZ85 2002-2022
Customer Reviews
JT
By Michael M. on
Verified Purchaser
Fits perfectly
Sprocket
By Glen P. on
Verified Purchaser
Exactly what my "21" Honda CT 125 needed.
All was good
By Robert W. on
Verified Purchaser
All was good
Works Great
By G.J. on
Verified Purchaser
Works Great. Great Quality.
Very Happy.
*Also Fits A 2024 CRF125F*
Direct Fit for 1990 VTR 250
By S. on
Fits good. I've had it for 2,000 miles. There are no signs of premature wear.
Front sprocket
By Bert V. on
Verified Purchaser
Just what I wanted
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Questions & Answers
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