The Contact is engineered to offer maximum stiffness at the lowest possible weight

Ramped paddle shaped center knobs roll efficiently and provide excellent traction for climbing and braking

But their PI Dry® technology is what really sets these warmers apart

More caliper stiffness and a new pad compound with bite

Compatible with Tektro Orion 4-piston calipers

SHIMANO BB-UN300 Bottom Bracket - 68 x 122.5mm - BSA - Square Taper Orange Seal The Contact is engineered toSHIMANO Square Type Bottom Bracket MTB Standard Structure Square Type Bottom Bracket SHIMANO quality performance cartridge bearing square bottom bracket Better chainline stability with chain line stabilizer 3 structures available Standard, E type, chain case options Adapter material: Aluminum