Tokawa gear box race with longer 1 and 2 gear. AFTER 08/2015
Fit only with the updated drum reference 4121
 and the mainshaft reference 4834
d: 12mm    D:17mm +M14      L: 153.5 mm 
Gear  : 13-17-17-19 thoots
Assignment:
Tokawa : 140, 149, 150 and 160-4S
YX 125, 140, 149,150, 160 if you use with the reference 4121 and 4834