Compatibility

• Shimano Dura-Ace R9100, R9120, R9150 & R9170 Di2 & all R9000 series
• Ultegra R8000, R8020, R8050 & 8070 Di2 & 6800
• 105 R7000, R7020, R7070, 5800, 4700

Bolts

• Special bolts are included with 30T (2xM5 TI / 2xM7 AL)
• Special bolts are included with 32T (4xM7 AL)

What size should I choose?

Our Sub Compact chainrings only work in predefined size combinations. When ordering combine 30t and 46t, or 32t and 48t chainrings as a set. Mounting bolts are included in the price of the small ring.

Due to very special 2.5mm offset construction of BOTH chainrings towards the frame and custom bolts:

*30T can only work with 46T and special bolt set 46/30. (bolts included with small ring)

*32T can only work with 48T and special bolt set 48/32. (bolts included with small ring)

*No other combination or mix of rings will work. Due to this special mounting construction, aesthetic bolt covers are not offered for this design

*Absolute Black always recommends using a new chain when fitting new chainrings.

*SRAM Yaw front derailleur compatibility – Due to the construction of SRAM Yaw front derailleurs, our Sub Compact chainrings are not compatible with them. If you replace your Yaw front derailleur with a Shimano equivalent (there are no indexing issues between Shimano FD and SRAM shift levers) you will be able to use our Sub Compact chainrings.