Reply to thread

Message: [QUOTE="SuzookKING, post: 504598, member: 34485"] I am familar with the YSR's as my son & I have 2 of them. :yeehaw: A CR80 conversion (his) and a YZ125 conversion (mine). Depending on where he will be riding it I would go for something similar to what the karting world uses (not being a tuner this is heresay so if this is far off someone correct me, otherwise confirm with a better source, before toasting some parts) =========================== 196° exhaust and 136° on the main transfer pick up blow down area and also a little top end power by widing the exhaust port a couple of MM above the point when the transfers open. ========================== This was given to me by a redneck kart tuner I myself am going to have Eric do a cylinder/head for my son, mine has plenty of power since switching to a modified TZ125 pipe. [/QUOTE]