Wheels Manufacturing WM Bottom Bracket BB30 to Outboard 24mm

Wheels Manufacturing BB30 to Outboard 24mm Bottom Bracket

The Wheels Manufacturing BB30-OUT-1 is engineered for riders who want to run a 24mm spindle crankset in a BB30 frame without sacrificing bearing size, durability or drivetrain efficiency. By moving the bearings outside the frame shell, this premium bottom bracket creates space for larger bearings with greater load capacity, delivering smoother performance and longer service life than many conventional BB30 conversion systems.

Precision-machined in the USA from high-quality aluminium, the BB30-OUT-1 provides a secure, accurate interface between frame and crankset. Whether fitted to a road race bike, gravel machine or hard-ridden mountain bike, it delivers the kind of smooth, reliable performance that disappears beneath you and lets the power do the talking.

Designed for Shimano Hollowtech II and other 24mm spindle cranksets, this is more than just a compatibility solution. It is a genuine performance upgrade that improves bearing support, reduces friction and helps keep the drivetrain running smoothly through thousands of miles of riding.

Key Features

• Converts BB30 frames for use with 24mm spindle cranksets.
• Outboard bearing design allows the use of larger, more durable bearings.
• Improves bearing life and load capacity compared to many standard BB30 adapters.
• Precision CNC-machined aluminium construction.
• Premium sealed cartridge bearings for smooth, low-friction performance.
• Suitable for road, gravel and mountain bike applications.
• Serviceable design with replaceable bearings.
• Manufactured in the USA.

Specifications

• Model: BB30-OUT-1
• Frame Compatibility: BB30
• Frame Shell Diameter: 42mm
• Frame Shell Width: 68mm (Road) / 73mm (MTB)
• Over Bearing Width: 90.5mm in 68mm wide shell*
• Crank Compatibility: 24mm spindle cranksets
• Cup Material: CNC-machined aluminium
• Bearing Type: Sealed cartridge bearings
• Bearing Position: Outboard
• Tool Pattern: 44mm, 16-notch
• Colour: Black
• Made in USA

*Over Bearing Width Dimensions include supplied silicone dust shields.

Compatible Cranksets

• Shimano Dura-Ace Hollowtech II
• Shimano Ultegra Hollowtech II
• Shimano 105 Hollowtech II
• Shimano GRX Hollowtech II
• Shimano Deore, SLX and XT Hollowtech II MTB cranksets
• Rotor 24mm spindle cranksets
• FSA 24mm spindle cranksets
• Other cranksets utilising a 24mm spindle interface

Why Choose the BB30-OUT-1?

Standard BB30 conversions often rely on undersized bearings squeezed into limited space. The BB30-OUT-1 takes a different approach by relocating the bearings outside the frame shell, allowing larger bearings that are better equipped to handle real-world riding loads. The result is improved durability, smoother rotation and a bottom bracket that is built to go the distance, whether chasing podiums, exploring gravel backroads or simply putting in the hard miles.

DELIVERY

Delivery to mainland UK addresses are free for orders over £40. Except when you choose delivery to a third party (Click and Collect) there is a charge of £5.95 to cover some of the additional cost the couriers charge for this service. If you choose to collect from Fawkes warehouse there is no shipping charge.

There will an additional charge for deliveries to Highlands and Islands. 

RETURNS TO FAWKES

Whether it’s a jersey that doesn’t fit, or the colour is not quite right, sometimes you’ll need to return items to us.

If an item is 'as new' and has not been used or fitted in any way, you can return it to us by post within 90 days of delivery for a refund. Please ensure that the goods are returned in their original packaging and are in an unused condition.

Please click HERE to print and then complete the returns form and include it inside your parcel.

If you wish you can use our Royal Mail Returns service please follow the instructions on the link below to return your parcel to us.

Royal Mail Returns Service

Please pack the item carefully to avoid damaged during shipping.

Customers need to pay the cost of return delivery unless the item is faulty and this will be deducted from your refund, currently £3.95.

If your have a large item e.g. Child seat, Bike, trailer etc. please contact our customer service team at Guy@fawkes-cycles.co.uk to arrange the best way to return your item, the cost will be deducted from your refund.

You will not receive a refund for the retail value of any free or promotional items you are sent, and you will be charged if they are not returned.

UNWANTED ITEMS

If you change your mind on your purchase, you have a full 90 days to return it for a refund. All Goods must be unused, in a saleable condition and in their original packaging with all labels still attached.

Please pack the item carefully to avoid damaged during shipping.

There are some exclusions to our 90 day returns policy, which are detailed below:

Nutritional products or those with a best before date must be returned within 28 days*

Any customised items such as wheel builds cannot be returned*

GPS systems such as sports watches or cycle computers can only be returned if unregistered*

For hygiene reasons, any intimate garments such as facemasks, underwear and swimsuits can only be returned if the items are faulty.

*Unless faulty

If you wish to return your item for a refund, please follow the returns procedure above.

We try our best to process all refunds within 14 working days. We'll refund your item via your original payment method.

You will not receive a refund for the retail value of any free items you are sent, and Fawkes may charge you for this item if you fail to return it

FAULTY ITEMS

If you feel that your purchase has developed a fault, then please contact us with photographs of the issue before returning any goods - we may be able to solve your problem without you incurring any further inconvenience.

If you find a fault with your item, send it back to us and we'll take a look at it as soon as we can. Items sent back to us will undergo an inspection and it may be necessary to send the item away to the manufacturer to confirm the fault. If we confirm a manufacturing fault, we'll happily replace or refund it.

Please pack the item carefully to avoid damaged during shipping. 

Faulty items should be returned within a reasonable time and in a clean and dry condition. PLEASE NOTE, WE WILL NOT PROCESS DIRTY ITEMS.

Please enclose all your details and a covering note explaining the fault and any other useful details.

We'll try to get back to you within 14 working days of receipt of your parcel, although during busy periods this may take slightly longer.

Your statutory rights are not affected.

We reserve the right to recharge return carriage on items where no fault is identified.

Customer Service Email: Guy@Fawkes-Cycles.co.uk

Please contact us for our Payment & Security policy.