I’m Nick Kazakov and this is how to install stunt sprocket on ZX6R 2009+
Stuntex sprockets are available in two colors, made from hard aluminum
Quality anodized
There are three sizes: 64, 60 and 54 teethes for popular stunt bikes for 520 chain
I install the smallest one
Front side is the side with marks and logos
Sprocket nuts are tightened with 59Nm torque
Remove chain cover before installing the rear wheel
OEM front sprocket is for 520 chain, so you can remain it ,if it’s in good condition
I install the strongest RK GB520GXW chain with gold coating
It has longest lifetime because of XW-rings
To determine necessary length of the chain for new sprocket you should know OEM chain size
One link equivalents two teethes on the sprocket
For this bike OEM chain has 112 links with 43 teeth rear sprocket
I install rear sprocket 11 teethes bigger, so I need to add 5.5 links to the chain
Better to round upward, so I need 118 links
Two links should be cut
To unlink the chain it’s easy to use chain riveting tool
Set the minimal chain adjustment to wink the chain
Connecting link is included
Control distance between plates when pinching connecting link
The distance should be like other links have
I need to pinch links a bit more
After rivet the pins of connecting link
Diameter of pin’s cap should be 5.7-6mm
Adjust chain slack after installation
Unscrew adjusting bolts symmetrically on both sides to do it
Chain slack is measured in the center between sprocket axles and should be 30-40mm
Fix adjusting bolts with the nut
Front sprocket cover can be installed in the end, but many riders don't do it
Cover bolts should be tightened with 9.8Nm torque
Speed sensor bolt should be tightened with 6.9Nm torque
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