Primo Tapered Integrated Headset

2 sealed cartridge bearings. Alloy dust cover with an internal O-ring for a snug fit and laser-etched Primo logos. Includes bottom race.

Upper bearing is standard 1-1/8″

Lower bearing is oversized 1.5″

Designed for Stranger’s Ballast Evo frame, but will also work with a variety of MTB dirt jumpers with tapered head tubes.

*Compatible with TAPERED 1-1/8″ to 1.5″ integrated head tubes only.