SRAM, X-SYNC 2 SL 3mm, Chainring, Teeth: 34, Speed: 11/12, BCD: Direct Mount, Single, Aluminum, Black

SRAM, Force E1 2x Direct Mount, Chainring, Teeth: 46/33, Speed: 12, BCD: Direct Mount SRAM 8 Bolt, Black

SRAM, Bosch DU38 T-Type, Chainring, Teeth: 38, Speed: 12, BCD: Direct Mount Bosch DU38, Steel, Black

Shimano, XTR SM-CRM96, Chainring, Teeth: 30, Speed: 12, Front, Aluminum, Black, ISMCRM96AA0