Like Blonde said... I would replace the chain as well. The chain and cassette wear together nd you should replace them together.
As for the cog size I'm pretty sure the 14-25 is for junior road race gearing so kids don't blow up thier legs. With that being said I wouldn't run a 14 as your largest cog on a DH bike. I would get something that is an 11 tooth or atleast get a 12 tooth as the smallest. 11-23 or 11-26 is the way to go in my opinion.
As for the cog size I'm pretty sure the 14-25 is for junior road race gearing so kids don't blow up thier legs. With that being said I wouldn't run a 14 as your largest cog on a DH bike. I would get something that is an 11 tooth or atleast get a 12 tooth as the smallest. 11-23 or 11-26 is the way to go in my opinion.
My newer 7Point has become a bit of a mini DH bike lately. I'm running a custom 6sp cassette (with 9sp spacing) with an 11-12-14-16-18-21 tooth combo and a 34t ring and I'm LOVING that setup it shifts super quick and crisp and with my XTR shifter I can get through all but one cog in a single throw.
Like Blonde said... I would replace the chain as well. The chain and cassette wear together nd you should replace them together.
As for the cog size I'm pretty sure the 14-25 is for junior road race gearing so kids don't blow up thier legs. With that being said I wouldn't run a 14 as your largest cog on a DH bike. I would get something that is an 11 tooth or atleast get a 12 tooth as the smallest. 11-23 or 11-26 is the way to go in my opinion.
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