GNR101 Posted February 8, 2009 Report Posted February 8, 2009 power between 392 and 421 cub is it like fullon massave?? or? Quote
kawiking Posted February 8, 2009 Report Posted February 8, 2009 392 is a cub cyln with stock cyln 421 is cub cyln with 4 mil crank both 68mm bores http://www.cpindinc.com/pub/part_list?manufacturer=3 Quote
BigRed350x Posted February 8, 2009 Report Posted February 8, 2009 The 4mil (421) will give you more torque and will probably feel like it takes less "effort" to ride due to the increased torque over the stock stroke (392) cub. The stock stroke will feel like it revs up a lot quicker and usually feel more zippy than the 4mils, but the 4mil will yield more power than the stock stroke witht he off-the-shelf castings. If you don't already have the 4mil crank and want to do the cub cylinder the 392 is the cheaper way to go and you will still have pretty good gains over stock cylinders in most cases. Its not an "oh my god!" difference in power, but there definitely is a difference in power between the two. But what you feel when you're riding it is more the torque than the power difference. Identical setups, riders, chassis, etc the 4mil cub will probably be able to pull 1 or 2 teeth higher on the front sprocket than the stock stroke cub. Hope that helps. - Jared Quote
locogato11283 Posted February 8, 2009 Report Posted February 8, 2009 go with the 421. you can never have too much power. Quote
GNR101 Posted February 9, 2009 Author Report Posted February 9, 2009 i think ill wait till i have the money for a 421 cub then :biggrin: Quote
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