Yamaha Athena YZ125 144cc 58mm Big Bore Cylinder Phathead version 1998-2000 and 2001-2021 CR500 Use the NGK MR8BI or CR125R9304 cobra Chamber Selection:T126 8.9cc (95+ octane) XR check with us
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Ships within 48 hours · Estimated delivery Sep 26 - Oct 1