More speed takes more power, so we install a Yuminashi big bore kit on our Honda CT125.

0:00 Intro
1:32 Teardown
4:29 Checking Ring Gap
5:43 Piston Assembly
6:40 Engine Reassembly
10:29 Fuel Injector
11:08 Buttoning Up
12:00 Wideband 02 Sensor
15:13 First Start
16:15 Road Test

#ct125 #trail125 #hondamotorcycles