Garmin Varia RVR315 Rearview Radar CORE The ring centerline is ~2mm

The ring centerline is ~2mm from the ring's mounting face

A seat post should be installed

The standard Keo has been developed with the goal of minimizing weight and a simplified cleat and pedal ensemble

weight: 30g per pair

but this one fills big tires fast and makes for a great all-arounder that’ll get you out the door and riding—fast

Garmin Varia RVR315 Rearview Radar CORE The ring centerline is ~2mmProvides visual and audible alerts for vehicles approaching from behind up to 140 metres away. Works seamlessly with your Edge bike computer or compatible smartphone as well as select Garmin wearables. The smartphone app helps you increase your awareness by providing graphics plus tone and vibration alerts to indicate the position and speed of approaching cars. When used with a compatible smartphone, Varia radar integrates with your favourite apps,