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    Box®

    PREORDER

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

    Rp 1.309.832

    Best for

    race-focused BMX riders

    Race class

    Confirm by rider size

    NOT SURE WHICH SIZE FITS?SIZE GUIDE →
    QTY
    1
    ~14 day ETA
    Send height & class for fit check

    Fit checked before shipping · Mechanic support via WhatsApp · Authorized dealer sourcing

    100% Secure Transaction

    VISAMASTERCARDAMEXPAYPALGOPAYOVODANAQRIS

    Live Stock

    Inventory updated daily. Items in stock ship the next business day.

    Fast Delivery

    We use trusted couriers to make sure your order arrives safely and on time.

    Secure Payments

    100% secure transaction. We never share your information with third parties.

    Satisfaction Guarantee

    Every item is checked before shipment. Return within 10 business days if unsatisfied.

    Preorder terms

    Clear timing before you commit.

    Estimated arrival

    09 Sep 2026 target

    Payment

    Full payment or WhatsApp-assisted

    Cancellation

    Cancelable before supplier confirmation

    Ship-out

    ~14 business days after order

    Fit & geometry

    Will this fit me?

    Race class

    Confirm by rider size

    Rider height

    Top tube

    Check geometry/spec table before ordering

    Wheel size

    Material

    Skill level

    developing BMX racers

    Setup context

    Race-ready checks

    Crank length

    Gear ratio

    Confirm chainring and cog setup

    Brake type

    Confirm brake standard

    Pedal setup

    Confirm included pedal/clipless preference

    Track recommendation

    Best for club racing and skill progression.

    Next step

    Still unsure?

    Recommended upgrades

    Complete the race setup

    Gearing

    Confirm chainring/cog ratio for your local track before checkout.

    Contact points

    Review pedals, grips, and saddle setup for gate-start confidence.

    Protection

    Pair the build with race helmet, gloves, and body protection.

    Product info

    About This Product

    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 modulated the Oversized formula to emphasize pedaling stiffness. We have transferred material specifically to sectors that experience sudden stress from pulling up on the handlebars. You’ll feel a difference in your acceleration. These stems are engineered for the larger-sized racers.

    100% Original Product
    Fast Shipping
    Pro Assembly
    24/7 WhatsApp Support
    Secure Checkout
    Global Sourcing

    MISSION BRIEF ///

    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 modulated the Oversized formula to emphasize pedaling stiffness. We have transferred material specifically to sectors that experience sudden stress from pulling up on the handlebars. You’ll feel a difference in your acceleration. These stems are engineered for the larger-sized racers.

    +COMPLETE YOUR SETUP

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

    THIS ITEM

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

    Rp 1.309.832

    COMBINED TOTAL

    Rp 3.869.797

    Preorder each separately via WhatsApp for bundle deals

    ASK BUNDLE PRICE

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

    Rp 1.309.832