WEIGHT - 155 g / 5

these are strongly recommended

Maybe you know of one that is

5 Inch - 590g

The bearing surface is spared a direct hit by using an aluminum inserts

absoluteBLACK 4 Bolt Narrow Wide Chainring - 104 BCD - Oval - Black - 9-12 Speed - 34T Do Not Ship Internationally WEIGHT - 155 g /absoluteBLACK is dedicated to producing the world's finest oval chainrings and were the first to crack the code to discover the correct shape and 'clocking' to make an oval chainring work. They learned how to maximize the part of the stroke where power is produced and minimize resistance where it isn't which has the effect of smoothing out the delivery of power throughout the pedal stroke and improving efficiency. Many other brands have followed suit