Box One Oversized 31.8 x 1-1/8" Top Load Stem

$69.99 Save
Size 48mm
Color Silver

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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: In this particular model stem we’ve tailored the Oversized strategy to favor utility and access. The geometry has been altered to allow for easy handlebar removal while at the same time scavenging material from low stress zones. Ideal for those who don’t want to compromise on user experience to gain performance. These stems are engineered for the larger-sized racers.

Oversized
· Top Load Clamp Design for Easy Handlebar
· Installation
· 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
Size:
· Length: 48mm, 53mm, 60mm
· Clamp Diameter: 31.8mm
· Stack Height: 28mm
· Rise: +/-5˚
· Steerer Tube: 1-⅛”
Weight:
· 48mm: 263 g / 9.3 oz
· 53mm: 267 g / 9.4 oz
· 60mm: 280 g / 9.9 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

SKUBX-ST1831T48-SL

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Enhanced Power Delivery // FASTER

There is no use pushing hard on your pedals if you can’t deliver most of that power to the rear wheel.

Power delivery AKA pedaling stiffness. When a rider pushes down on a pedal, the pedal, crank set, bottom bracket, frame and all the hardware holding those together deflects laterally. Stiffer components deflect less, so more of your energy output goes into turning the rear wheel, rather than deforming the components and frame. By using Oversized technology, Box is able to add only the appropriate amount of material for stiffness where it is most needed. It is possible to add too much stiffness where the rider will not feel the benefits. Going beyond that point simply adds material which is surplus weight. 

Superior Control // FASTER RESPONSE

Wonder why there is lag time between input from your hands to reaction from your bike?

Bike control can be defined as steering stiffness and this affects how your bike handles as a result of rider input. At Box we define steering stiffness by how much the grips, handlebar, stem, fork, wheels, frame and all hardware between twists when they are ridden around a corner. Higher steering stiffness contributes to a more responsive handling bike by reducing latency between hand input and reaction in the bike. Just as with power delivery, by using Oversized technology, Box is able to add only the appropriate amount of material for steering stiffness where it is most needed. This allows our components to combat the cornering load as it passes along its load path from grip all the way through to contact point on the track.

Armored Build  // MORE DURABLE

Why invest in cutting edge components if they don’t last?

Toughness is a natural byproduct of our Oversized technology. By adding size to specific areas of components we have not only increased pedaling and steering stiffness, we have also added toughness and strength. Larger surfaces also increase the ability of a component's ability to spread impact loads. 

Advanced Materials // ALL ABOVE

Not all things are equal when it comes to materials of construction.

We don’t just manufacture carbon fiber parts. We engineer where the strength/stiffness needs to be and the layer of fibers are added and aligned in the direction and angle required to provide the best effect. With metal alloys we don’t just buy “aerospace grade alloys” we choose the appropriate aluminum alloy for the component, and send it through the appropriate heat treatment processes. We demand material certifications as part of our quality assurance program.

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