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16
Joined
10/16/2017
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GB
Hi, so I'm new to this came from bmx and got into the mtb scene just recently, I want to change to a single sprocket at the front what teeth would you recommend? What sprocket would you go for? Also it has 4 bolts and I'm not sure on the dimeter hole needed? How do I find that out? Also is it an easy process to do? After researching the best size sprocket would be a 34t - 38t I think? Also I have a 9t cassette at the back, also any other mods you recommend would be great.
Here's a link to the bike. Thanks!
https://www.tredz.co.uk/.Kona-Caldera-Mountain-Bike-2012-Hardtail-Race-…
Here's a link to the bike. Thanks!
https://www.tredz.co.uk/.Kona-Caldera-Mountain-Bike-2012-Hardtail-Race-…
If you do have the e*thirteen cassette, I'd suggest a 34-tooth narrow/wide chainring. The thick/thin tooth profile will help keep your chain on. The swap is easy. Just remove your old chainrings and front derailleur/shifter/cable, bolt on the new sprocket, then adjust your chain length as needed.
You can determine what chainring to order by measuring the BCD (bolt circle diameter): https://wickwerks.com/bolt-circle-diameter-bcd/
It's likely 104mm.
If you have the 11-34 tooth original cassette, you'll want to go a bit smaller with the front chainring. 32-teeth would be good. The reason for this is so that you can still climb steep hills. Your top speed will take a hit, however, but that's usually not a big issue for most people.
As far as mods, a rear derailleur with a clutch mechanism will make a noticeable improvement, but may mean the need for a new shifter and cassette as well.
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