What does the 440 BigBore to for your 400EX?
May 7, 2001 | 06:51 PM
#2
Weekend Warrior
Joined: Mar 2001
Posts: 16
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hey' i got a 440 with hmf enginering pipe & fly wheel advance key. no port work or cam yet. it pulls so hard of the bottom it feel like it's going to pull your arms off!!!! some improvement on mid range. none on top but,no loss on top either. but i love mine. 4th gear wheelies no prob.any questions let me know!
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