It’s been a while since the International Cycling Union (the body that sets the rules for bicycle racing) went on air saying that it would permit the use of disc brakes on cyclo-cross bikes. While this is hearty news – we’re seeing a number of new, disc-equipped competition-level cyclo-cross bikes – what about those ones that were made before the announcement? That is where Taiwanese bicycle brake manufacturer TRP come in with their Parabox system, a solution that pairs standard cable-operated road levers with hydraulic calipers.

It allows you to use the existing cable-based brake levers. Its junction box master cylinder clamps onto the handlebar stem, just beneath the bars. This is linked to the levers via two hose-enclosed cables, which activate the cylinder mechanisms within the box, providing hydraulic braking power. The system also includes front- and rear-specific calipers along with pads, 160 mm rotors, and hydraulic lines.

The system was redesigned in 2012, benefiting from a slimmer clamp to allow for lower stack height and angled bracket for negative degree stems. It has its own proprietary calipers slimmed down for weight but packing huge 21mm pistons. The system comes complete with pre-bled lines and 160mm rotors (140mm available) post mount to IS adapters and all mounting hardware.

via Gizmag