Hello guys. I recently bought ghost dh 9000 2015 model and circled thing in the picture broke and I can't find a name of it since not many bikes has it and
First Impressions: One Ghost Industries Musashi | BIKE Magazine
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GHOST-Bikes - "Tomas Slavik's Ghost DH 9000 uses an idler pulley to minimize the effects of the high main pivot location on the drivetrain. The rearward axle path and the massive Cane
Tomáš Slavík's Ghost SL AMR X Urban Downhill Bike | GMBN Tech Pro Bike - YouTube