Your bike, your gearing. Pick the pitch, dial the rear sprocket's teeth and color,
match the front, and finish with a chain sized to the setup — every part verified
to fit before it shows.
Start with your bike
Sprockets are hub-specific and the chain is sized off your gearing —
pick your bike in the bar above and the builder opens up.
1Pick your pitch
Pitch is the chain's link spacing — sprockets and chain must match.
Your OEM pitch is marked; a 520 conversion drops rotating weight for track and spirited street use.
2Rear sprocket
Pick the sprocket type — the manufacturer's spec card shows what each is for —
then your tooth count. More rear teeth = quicker acceleration; fewer = more top end.
3Front sprocket
Vortex fronts are steel for wear — one tooth down at the front
is roughly three up at the rear.
4Chain
Manufacturer numbers, not marketing — chains not rated for your engine
are greyed out with the stated reason. Length is pre-sized from the gearing you picked.
