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Free UK Shipping Over £50 & Easy Returns



Free UK standard shipping on orders over £50
The BOX BMX Box One Oversized 31.8 X 1-1/8" Delta Stem is precision-engineered to enhance your BMX riding experience with superior strength and responsiveness. Crafted with Oversized Technology, this stem is designed to perfectly match the increased thickness and diameter of oversized handlebars, creating a robust interface that minimizes twist and maximizes control. Whether you're hitting the streets or tackling technical lines, this stem ensures your power translates directly to the bike without loss through stem-to-handlebar deflection.
Manufactured from forged and CNC 6061-T6 aluminium, the stem offers an ideal balance between lightweight performance and durability. The chromoly clamping bolts provide secure fastening, while the anodised finish with laser-etched graphics adds a sleek, lasting aesthetic. Available in lengths of 48mm and 53mm, it suits a range of rider preferences and setups. Designed with a zero-degree rise and compatible with 1-1/8” steerer tubes, it seamlessly integrates with your BMX components for a flawless fit.
When paired with other BOX BMX Oversized components, the Box One Stem delivers exceptional pedalling stiffness and steering precision, giving you the confidence and responsiveness needed for advanced maneuvers. This stem meets or exceeds the EN 16054 Category 2 Standard, ensuring reliability and safety under demanding conditions.
Is this stem compatible with all BMX handlebars?
The Box One Stem is specifically designed for oversized handlebars with a 31.8mm clamp diameter. It may not fit standard handlebars with smaller diameters.
What sizes are available for this stem?
This stem comes in two lengths: 48mm and 53mm, allowing riders to choose based on their preferred reach and riding style.
How does this stem improve pedalling efficiency?
The stem’s oversized interface increases stiffness and reduces flex between the handlebars and stem, which helps maintain power transfer and prevents energy loss during pedalling.
Can I pair this stem with other BOX BMX components?
Yes, combining the Box One Stem with other BOX BMX Oversized components enhances overall bike responsiveness and control.
Stock Status Instock - Instore - Item Usually shipped or available for shop collection, within 48 hours (Mon-Fri)
Instock - Supplier Warehouse - Item is held in Suppliers Warehouse, Depending on the the supplier transfer time can vary from 24 Hours to 14 Days for item held in European warehouse.
(over festive periods some suppliers shut from 24th Dec-2nd Jan so orders can be delayed through this period.)
Brands held in European website include Trek, Bontrager, Electra, Wahoo, Rapha. For up-to-date transfer times please call customer services on +44 (0)1782 768622
Most out products are shipped by FedEx, providing unprecedented reliability and speed. Lightweight Spares below £25.00 value have a Royal Mail postage option, which is sent via Tracked 48 service. - £2.99
Shipping on all Domestic Orders over £50.00 (excluding bikes and home trainers) for delivery within the UK is completely FREE!
Bike and Home Trainers and oversize Goods £15.00 - FedEx
White Glove Bike Delivery - our white glove option has your bike personally delivered to you by a fully trained Mechanic and Bike fitter - £99.99
(Certain bikes will only have this option such as Cargo Bikes)
To Qualify for FREE Shipping:
In some cases, we may ship items out with another courier, depending on the status and availability of items ordered. (Customers will not be charged more and will be refunded any unused postage cost) If part of an order is cancelled and the total drops below the £50.00 free postage, a postage charge may be taken.
Delivery costs will be clearly stated on the checkout page, though you will need to register (to provide your delivery address) in order to see the delivery costs.
If you have any questions about delivery charges, times or none delivery please do not hesitate to get in touch by email:store@swinnertoncycles.co.uk or by telephone on +44 (0)1782 768622. Handling is normally 48 hours, but at busy periods this may be extended but we will endeavor to process your order within 5 working days. Please bear in mind in some cases orders can take longer to process, please contact us for more details.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
