Box One Oversized 31.8 x 1-1/8" Center Clamp Stem

$99.99 Sale Save
Size 53mm
Color Black

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"Not compatible with carbon fiber steerer tube forks"

All Box stems are engineered and crafted using our Oversized Technology. As we follow the load paths down the handlebars we have focused our attention on the stem-to-bar interface. Since the Oversized handlebars have an increased wall thickness and tube diameter in this sector we have reciprocated with an augmented stem interface with greater surface area. We’ve done this by moving material from low stress areas. This has greatly minimized twist and contributed to responsiveness. As the stem in mated with the handlebars we have contributed to increased pedaling stiffness by providing a backstop to the “lifting” phenomenon. There is no point pushing hard on your pedals if you can’t pull up on your handlebars and deliver that power. Power can easily be lost to handlebar-to-stem deflection and the consequences can be poor power delivery and steering control. When combined with Box’s other Oversized components, you’ll experience heightened responsiveness and reduced latency.

Key differences: This particular model stem not only shifts material from low stress zones to the Oversized interface, but also moves the clamp to the center and out of your knee’s way. These stems are engineered for the larger-sized racers.

Lightweight Skeleton Design
Knee-Saving Wedge Center Clamp System
Massive Bar Bore
Massive Clamping Bolts
Superior Strength

Material: 6061-T6 Aluminum
Process: Cold-Forged
Hardware: Chromoly Clamping Bolts
Finish: Anodized w/Laser-Etched Graphics
· Length: 53mm, 60mm
· Clamp Diameter: 31.8mm
· Stack Height: 44mm
· Rise: 0˚
· Steerer Tube: 1-⅛”
· 53mm: 244 g / 8.6 oz
· 60mm: 246 g / 8.8 oz

Box One XL Fork with 1-1/8" Steerer Tube
Box One X2 Fork with 1-1/8" Steerer Tube
Box One X5 Fork with 1-1/8" Steerer Tube
Box One Cro-mo Triple Taper Handlebar with 31.8" Bar Bore
Box One Alloy Triple Taper Handlebar with 31.8" Bar Bore
Not compatible with carbon fiber steerer tube forks