KCNC K5 Rectangular Road Rings Type:53T 110bcd Black and now with 1150 lumens

and now with 1150 lumens the Joystick enables you to spot the terrain changes in the distance and the tight corners at your wheel

This is a light weight Scandium T-7451 bottom bracket with 3 replaceable sealed bearings

Rise:+/- 5mm

40mm - 384g

but they are an extreme a-symetric ring

KCNC K5 Rectangular Road Rings Type:53T 110bcd Black and now with 1150 lumensThey call them "rectangular" chainrings, but they are an extreme a symetric ring!! They are certainly not round!! Designed to reduce the effect of the "dead spot" as the crank arms come round top dead centre (12 and 6 o'clock). They can increase power, they can increase efficiency, they can make you pedal smoother! KCNC use what they call an ovality ratio of 1. 225 on the K5 pattern rings, with a bi radial symmetry offset by 88. 3 degrees. 110bcd 39T