Our Premium Shimano 130/5(bolt pattern) oval chainrings are designed for pre 2014 cranks like Shimano Dura-Ace FC7900, FC7800, Ultegra FC6700, Shimano 105 -5700 and many more.
These are the finest shift-able oval chainrings on the market.
If your current chainrings are 53/39T this is a model you require.
Ovality: Optimised to each size separately. 39T- 6.5%, 53T - 10.3% ; Timing of 108.5° after TDC (top dead centre). Patent Pending
Size: (Mass +/-1g): 39T (34g), 53T (110g)

BOLTS
For Outer chainring please order Long bolts
Changing Inner chainring to oval only? use original bolts

Advantages of Absolute Black Road Oval chainrings:

• One of a kind special oval shape that helps you climb easier and faster (Patent Pending)
  
• Over 15% stiffer than Rotor Qrings due to thicker, 5mm construction
  
• Bespoke Absolute Black 6 point ramp and recess shifting design shifts better than any other brand and model of oval chainring
  
• Finest design that provides excellent strength to weight ratio
  
• You will not "feel" the oval shape while pedalling
  
• Your pedalling action will feel smoother
  
• Helps reduce stress on knees and helping your legs remain fresher for longer
  
• You will be able to maintain better cadence while climbing
  
• Reduces possibility of leg cramps
  
• You will reduce chainring/cog shifts by at least 15%

Applications

Shimano Dura-Ace 7900,7800, Ultegra 6700, Shimano 105- 5700, Tiagra 4600, FSA, Rotor 3D & 3D+, S-works and many more. Compatible with Di2