absoluteBLACK Oval Premium Oval Chainring (Campagnolo)

absoluteBLACKs Premium 2X Campagnolo compatible Oval chainrings are designed for Super Record, Record and Chorus 4 bolt 145/112bcd cranks. They work perfectly with 11 & 12spd drivetrains thanks to our ingenious design. Incredibly stiff and light. Super fast shifting thanks to our patented shifting ramp design. Same brilliant oval design like in the rest of the collection.Use original bolts to mount them.

Ovality: Optimised to each size separately 39T - 10.4%, 53T - 10-11.2%; Timing of 108-110.5deg after TDC (top dead centre) Ideal for road climbing. Patent Pending.
Size:(Mass +/-1g): 53T (90g), 39T (42g)

Advantages of absoluteBLACKl Campagnolo Compatible Oval Rings
Finest design to provide excellent weight to strength ratio
One of a kind special oval shape (Patent Pending)
Superb quality and great look.
You will ride faster using ovals.
You will not "feel" the oval shape at all
Reduces stress on knees

How To Mount Campagnolo Oval Chainrings
Remove crank from the bike. First unscrew small chainring bolts with T-30 torx key. Campagnolo uses a hard glue so you may need to put more force to make the bolts turning. Then remove the big chainring with the same key. Mount oval chainrings in the same fashion as originals were attached observing that small triangle indicator on the inner circumference on both rings should be lined up with the crank arm. Torque all 8 bolts to about 5-7Nm