20T or 21T 64 BCD Chainring. Works with all cranks with 64 BCD bolt spacing. Hardened Stainless Steel for long lasting performance. 21 tooth, 21 teeth.
Shimano Dura-Ace FC-R9100 34t And/Or 50t Chainring
Shimano Dura-Ace FC-R9100 36t And/Or 52t Chainring
Shimano Sora FC-R3000 34t And/Or 50t Chainring
KMC Chainring for Bosch E-Bike 1/2 x 11/128 Super Narrow 15t, 18t, 19t, 20t, 21t
Sturmey Archer Freewheel Single Speed 1/2" x 1/8" or 3/32" 16t 17t 18t 19t 20t
ANDEL RETRO FLUTED TRACK CHAINSET 165 or 170mm, 44T, 46T or 48T 1/8in chainring
