PDW REAR GRAVITY+ USB 17T Also works great on the

Also works great on the back of head rests in the car for the kids

Sweepback-style rack

Converts BB30 frames to a single speed or fixed gear setup

Arms can be centered for side mount spare tires

PDW REAR GRAVITY+ USB 17T Also works great on theNew improved model with longer battery life Tail light featuring a built in accelerometer that boosts output up to a 100 lumen steady light when braking or swerving is detected Standard modes include 20 lumen solid setting and an 80 lumen flash setting with run times of 12 and 30 hours USB rechargeable li polymer battery Weatherproof exterior for all season riding Includes brackets for seatpost and seatstay mounting Mounts vertically or horizontally