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AbsoluteBlack Premium Oval Sub-Compact 110/4 BCD Chainring For Shimano 12 S Cranks Black


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Introducing the AbsoluteBlack Premium Oval Sub-Compact 110/4 BCD chainrings with the Sub-Compact size to improve your climbing and cadence.

Increased cadence is essential to reduce perceived effort. With the 48/32T and 46/30T chainrings, you can ride anywhere and climb anything. Alpine climbs will never be so difficult again. These special super compact chainrings are designed for Shimano 110/4bcd cranks, making AbsoluteBLACK the only company on the market offering such sizes. The 30 and 32T chainrings allow you to climb on your own terms with improved cadence and efficiency. This is the most premium oval chainring on the market with scientifically proven performance gains.

Oval chainrings don't produce more force, they increase pedalling efficiency through better force transmission. This means that you won't necessarily go further by pedalling harder. But the less force you lose, the more energy you keep, allowing you to pedal harder when you need to and thus reducing your general fatigue. That's why you can ride faster, longer and further with oval chainrings.

Studies conducted by the University of Primorska, Slovenia, show significant differences between the use of AbsoluteBlack Oval chainrings and conventional round chainrings. It is proven that using an oval chainring can provide up to a 9% increase in pedal stroke efficiency, up to 7% less oxygen consumption, 15% less breathing and up to a 10% decrease in heart rate.

Details : 
  • Weight : 30T (27g), 32T (30g), 46T (99g), 48T (110g)
  • Color : Black
  • Compatibility : Shimano Dura-Ace 9100, R9120, R9150 & R9170 Di2, Ultegra 8000, R8020, R8050 & 8070 Di2, 105 R7000, R7020, R7070, Dura-Ace 9000 & Di2, Ultegra 6800 & Di2, Shimano 105 5800
  • 10 / 11 / 12 S compatible
  • Offset : 2.5 mm
  • Designed in the UK. Made in Poland (EU).
  • Not compatible with Power2max
  • Special screws are included with 30T (2xM5 TI / 2xM7 AL)
  • Special screws are included with 32T (4xM7 AL)
  • Material : CNC machined 7075 Txxx aluminium. Long life construction. Type II anodising
  • Ovality : Optimised to each size separately. 30T- 9%; 32T - 8%; 46/48D - 10-11.2%; Timing 108 -110.5° after TDC (top dead centre) - Ideal for climbs. Patent Pending
  • Sub Compact trays are not compatible with some power meters that have a circular spider (some Quarq models, Power2Max, etc...)
  • Sub Compact trays only work in predefined size combinations. When ordering, ONLY add 30t and 46t, or 32t and 48t trays to your basket or to a set. Mounting screws are included in the purchase price of the tray. 
  • The 30T chainring can only work with the 46T with the special 46/30 screw set.
  • The 32T chainring will only work with the 48T and a special screw set 48/32.
  • No other combination or mix of rings will work. Due to the special construction of the assembly, cosmetic screw covers are not available for this design.
  • AbsoluteBlack always recommends using a new chain when mounting new trays.

  • The 30 and 32T chainrings allow you to climb within your own physical means with improved cadence and efficiency.
  • Unique oval shape helps you climb easier and faster (patent pending).
  • No more long climbs where you want a bigger cassette.
  • 46/11 or 48/11 are still big gears to ride on the flat. For your daily rides, you probably don't need more.
  • Your pedaling will be smoother.
  • The AB oval reduces the stress on your knees and helps your legs stay cooler for longer.
  • You will be able to maintain a better cadence when climbing.
  • Reduces the risk of leg cramps.


First of all, you need to remove your crank from your bike. Once removed, unscrew the 4 screws that hold the two chainrings together with a T-30 torx key. Remove the two original rings.for 46/30T - Start by placing the large chainring on the crank. There is only one way to do this. Next, locate the triangular mark on the inner circumference of the small chainring and ensure that it will be placed behind the crank. The small plate also has built-in spacers on one side. These spacers must fit into the mounting holes of the crank. The 30T chainring is supplied with 2 M5 screws (Torx T-25) and 2 M7 screws (Torx T-30). Lock both chainrings in place with the screws provided and tighten the M5 screws to 4-5 Nm and M7 to 5-7 Nm for 48/32T. The same procedure applies except that the 32T chainring is supplied with 4 M7 screws (Torx T-30).




Position External
BCD 110
Offset (mm) 2.5
Tooth 46
Speed 11




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