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R6 Pilot
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vortex makes them but i will never buy another aluminium sprocket EVER!!!! I ride my bike pretty responsibly w/ an occassional clutch up wheelie & i chewed my vortex up in about 4k miles. never overtightened & all but 4 or 5 of the teeth where severed completely off. im looking for a manufacturer that makes a steel 47T in 525 myself.....nebody kno sumbody other than sunstar b/c they wont take custom orders. :mad:
 
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