RobbieVentura

@RobbieVentura

Father of four who loves to play

The O symetric chainrings are a piece of technology many of the riders are choosing to ride. Eliminates dead spot.

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1825 days ago

The O symetric chainrings are a piece of technology many of the riders are choosing to ride. Eliminates dead spot.

3 Comments

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davesimcoe 1824 days ago

My Trek 660 from the '90s came with this. No one could adequately explain this to me.

investorkev 1825 days ago

What was old is new

jim_cubbage 1825 days ago

Saw these things 20 years ago. It didn't catch on then, as it disrupted rhythm.