B-motor, Yamaha YZF-R125 splitting the B-Motor crankshaft on YZF-R125 January 22, 2022 northcust 2 Comments B-motor crankshaft rebuild progress in pictures… what we’re starting with.. Continue reading splitting the B-Motor crankshaft on YZF-R125 → Share this: Click to share on Facebook (Opens in new window) Facebook Click to email a link to a friend (Opens in new window) Email Click to share on Pinterest (Opens in new window) Pinterest Click to share on Mastodon (Opens in new window) Mastodon Like this:Like Loading...