Box One Delta 31.8mm Big Bore Stem Color:Blue MAX PSI: 85psi on 1-1/8"

MAX PSI: 85psi on 1-1/8" and 60psi for the rest

Each headset comes complete with a set of Crupi headset spacers too

WEIGHT [mid]: 51 grams / 1

Designed for daring feats

Box One Delta 31.8mm Big Bore Stem Color:Blue MAX PSI: 85psi on 1-1/8"The Box Delta 31. 8mm Big Bore Stem is designed specifically for BMX racing. It pairs well with Box's Jet, Triple Taper Alloy, or Box One Chromoly (aka Maximus) handlebars and with them creates one of the stiffest combos around. Putting it all together will allow you to harness and better control your bike, which should translate to faster times. Box, in their never ending quest to design parts that are the stiffest and the lightest have created here