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B&M 420 Mega Blower Pullies


B&M 420 Mega Blower Pullies

Old 01-25-2015, 10:45 AM
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also try
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Old 01-26-2015, 11:42 AM
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So you're thinking... With the normal lower 3 grove on the crank... Another set of 600 uppers would blot right to that setup on the crank?

I'm also wondering if I could run the 16 grove and only use 10 of the groves? But not sure how much that would help me since most of the 16 grove pulleys seem to be bigger than 5.0 and not smaller.

Is there any way to change this to the COG setup? With out spending a fortune?

Last edited by Leathl_WS6; 01-26-2015 at 12:00 PM.
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Old 02-28-2016, 06:39 PM
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Any of these pulleys still available. I am still running stock 600 sc pulleys. Looking to go up on the lower or smaller on the upper. Just trying to boost up 2lbs to 7ish. Thanks Jeff
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Old 01-26-2018, 12:47 PM
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Anybody still have any lower pullies and idler setups. I need two of each.
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