- OEM-GT 20 Tooth #40/41/420 Chain 5/8'' Bore Jackshaft Sprocket For Mini Bike go kart.
- Brand new jackshaft sprocket with 20 tooth and 5/8'' ID.
- Keyway size : 3/16''.
- Overall diameter 3.5''.
- Works with #40 #41 and #420 roller chains.
- Two set screws also included.
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