M MW Member Nov 4, 2002 5 0 Nov 4, 2002 #26 139 vs 144? Hi Eric, How bout the 139 (+3mm) vs the 144 OB for the TM moto engine for a karting applicaton... Better topend/overrev, quicker rev, durability, balance,etc ? Is the new T5 RCE pipe vs the stock HGS looking good for this app? Thanks! Last edited: Nov 4, 2002
139 vs 144? Hi Eric, How bout the 139 (+3mm) vs the 144 OB for the TM moto engine for a karting applicaton... Better topend/overrev, quicker rev, durability, balance,etc ? Is the new T5 RCE pipe vs the stock HGS looking good for this app? Thanks!