Most new mountain bikes are shipping with a one-by drivetrain. Depending on the style of bike, and the range on the cassette, stock builds may see anywhere from a 30 to a 36 tooth ring up front. Yet depending on your riding and style and terrain, the stock ring size might not work for you. Fortunately it’s usually an easy and inexpensive swap.
What Size Chainring Are You Running on Your Mountain Bike?
Depending on the style of bike, and the range on the cassette, stock MTB builds may see anywhere from a 30 to a 36 tooth ring up front.
14 Comments
Dec 12, 2021
Dec 14, 2021
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Dec 12, 2021
32 for 27.5.
30 for 29er.
16 for the fatty. ;)
Dec 17, 2021
Dec 12, 2021
Dec 12, 2021
My old HT runs 36/22T rings (2x10).
Dec 13, 2021
Would like to change it to 36-26T/10-45T
Dec 13, 2021
Dec 3, 2022
So, thats why I'm still riding it, a alloy frame, 120 travel w/a triple & 10 speed cassette. (Yes, I know, Sheldon says I can exactly replicate w/a 2 x 11)
I've got an island 25 mile ride with 2250' of elevation gain, its got everything from paved road, dirt road, rutted double track and single track with some very steep climbs and decents.
The granny (22 × 40) gets used on the way out and up, then there's the 25-30 knot trade winds. The high gear gets me back into town and in front of something cold faster than any 1 x would or could. From the top of the last ridge climb, its 7 miles downhill and almost as importantly downwind.
The owner of the one Island shop is also of the mind, he says he's all about gears.
So depending on your riding style, terrain, conditions gears can enhance the experience.
My 180 lift assist "mainland" rig is of course appropriately 1 x.
Life like gears offers options, why limit them?