Fast-rolling centre tread: ramped knobs reduce rolling resistance for speed on dry hardpack and loose-over-hard surfaces

The lowest offers up 3 lumens and the longest runtime of 20 hours

or top of your stem if you are not running any spacers above your stem

Weight: 26t - 52g

and a large-capacity lithium-ion battery

SuperB Derailleur Hanger Alignment Gauge Tool PDP|PLP|Brake Rotor Type Fast-rolling centre tread: ramped knobsA misaligned hanger is often the main culprit behind poor shifting and a tweaked hanger will make it impossible to get your drivetrain running smoothly in every gear. All it takes is a bit of a knock from a rock or log, putting your bike down the wrong way, or a crash, and suddenly your gears are all over the place. The worst thing is that the hanger often looks fine but can be juuust wonky enough to make your gears skip a little and drive you insane.