110BCD (5-bolt AERO) 2X Sprocket Round Road Bike Foldable Bicycle 11/1

Which size of an oval should I choose

We always recommend swapping like for like, so if you have a 32T round ring at the moment, you should consider getting a 32T oval. The same applies to our shiftable road ovals, we recommend that you purchase ovals with the same teeth count as your round rings.

How to calculate gear inches for an oval chainring

Exactly same way as for round chainring. You just need to use the nominal size in the calculation of an oval ring you have. That is, if you buy 32T oval you use for calculation 32T size. Reason for this is 32T oval chainring has same circumference as the 32T round. We optimize the shape but not circumference - it stays constant. Distance between each teeth always has to remain at 12.7mm to engage the chain properly. You can use any online calculator to get gear inches for an oval chainring.

Model	46Tor 48Tor 50T or 53T or 54T
Colour	Black
Made from	7075-T651
Surface coating	Anodizing
Made with	CNC milling
Origin	CHINA
Chainring shape	ROUND
Compatible cranksets	SHIMANO/SRAM /ROTOR/FSA 110BCD and other 110BCD 5 Bolts Crankset of road bike and gravel bike/power meter or spider
Weight, grams	143g (46T), 163g (48T), 172g (50T), , 190g (52T), 210g (53T), 217g (54T)
Chain compatibility	11/12/ ordinary chain

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110BCD (5-bolt AERO) 2X Sprocket Round Road Bike Foldable Bicycle 11/11-12 speed Gravel bike