Ultra-ventilated protective plates coupled w/ engineered channelled bio-foam allow increased airflow

or attached to your helmet with the included "action camera" style helmet mount

The DF2 is only compatible if the OD is ~29

This system ties in perfectly with Spank's 35mm clamp bars

Quick Release seat post mount or frame mountable

Box Four 8 Speed Wide Range Groupset - Multi Shift - 11-42T - 8 Speed Back in Stock Ultra-ventilated protective plates coupled w/The Box Four range is for those people who just want less fuss! You're fond of Prime 9, but know 8 is enough, and surely 12 42T is plenty of range for an 8 speed cassette. The Box Four derailleur still has the Limited Slip clutch but now arrives with a more compact cage. The custom 8 speed chain is built for abuse, although it's sophisticated enough to have its own wide narrow chainring. Who's this item for: The multishift option is perfect for riders