125z modified 125z racing 125z Yamaha 125Z Standard Modified Posted on May 31, 2009 by eddy This is the mechanic Yamaha 125Z at the workshop 15-39T 428 is the sprocket setup for this Yamaha 125Z Original Yamaha 125Z carburetor is still being used but tuned to maximum power Still under tuning with the 2T oil pump uncovered Original Yamaha 125Z exhaust but modified and operated 2T oil line is being replaced by larger diameter tubingREMEMBER: NEVER RACE ON THE PUBLIC ROAD, RACE ON TRACK ONLY! Advertisements[wp_dfp_ad slot="mm_lb_03"]