Grin Double Bob (OEM)

The Double Bob rail provides a convenient and secure means of attaching a Hailong-03 Downtube battery to any location on the bicycle frame tubing regardless of the eyelet position.

These pieces are CNC machined from solid aluminum stock and provide a wide and flat platform for the battery cradle to rest, so there is none of the rocking or play that is sometimes present with waterbottle eyelets. Machined channels allow up to 3 hose clamps to keep the battery tightly in place.

The bulk supply is for business users who are installing these on bikes themselves and do not require all the fasteners and retail packaging that comes with our standard issue Double Bob. 

Designed and made in Canada by Grin Tech.