Shimano, Ultegra FC-R8000, Chainring, Teeth: 52, Speed: 11, BCD: 110, Bolts: 4, Outer, Aluminum, Grey, Y1W898030

Wheels Manufacturing, Shimano DM T-Type Inboard, Chainring, Teeth: 32, Speed: 12, BCD: Direct Mount Shimano, Single, 7075 Aluminum, Black

SRAM, T-Type Brose A1, Chainring, Teeth: 34, Speed: 12, BCD: Direct Mount

SRAM, 39T, 10 sp, BCD 120mm, 4-Bolt, All 26/39, Outer Chainring, For L-pin GXP 2x10, Aluminum, Black, 11.6215.188.260