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View Full Version : Jetting help



Bruce300ex
10-09-2008, 10:53 AM
Well i just got a full cobra exhaust http://cgi.ebay.com/ebaymotors/HONDA-TRX-250X-300EX-COBRA-FULL-EXHAUST-SYSTEM-87-08-Z_W0QQcmdZViewItemQQ_trksidZp3286Q2em20Q2el1116QQi temZ200258548848
K&N+outwearers prefilter and no lid
Im woundering whats a good jet size to start with, i have heard between 130 and 140 and i dont wanna spend a ton on jets since they are a pain to order and everything