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The Wheels Manufacturing BB30A Outboard Bottom Bracket is the premium solution for fitting SRAM and Truvativ GXP cranksets into BB30A-equipped frames. Designed around Wheels Manufacturing's proven outboard bearing system, it relocates the bearings outside the frame shell to create space for larger, more durable bearings, delivering smoother performance, increased bearing life and improved resistance to the demands of high-mileage riding.
Unlike conventional BB30A adapters that are constrained by the limited space inside the frame shell, the outboard design allows the use of full-size ABEC-3 sealed cartridge bearings. The result is reduced friction, greater load capacity and long-term reliability whether the bike is built for racing, endurance riding, gravel adventures or year-round training.
Precision-machined in the USA from high-quality aluminium, the BB30A Outboard Bottom Bracket provides an accurate, creak-resistant interface between frame and crankset while delivering the smooth-running efficiency expected from a performance drivetrain.
Key Features
Designed specifically for fitting SRAM and Truvativ GXP cranksets into BB30A frames.
Outboard bearing design allows the use of larger bearings for improved durability.
Premium ABEC-3 sealed cartridge bearings for smooth, efficient operation.
Precision CNC-machined aluminium cups for accurate frame fitment.
Improved bearing load capacity compared to traditional internal BB30A adapters.
Serviceable design with replaceable bearings.
Suitable for road, gravel and mountain bike applications.
This bottom bracket is designed specifically for frames using the BB30A standard. BB30A was developed by Cannondale and features a wider asymmetric shell than standard BB30, requiring dedicated bottom bracket solutions.
Common BB30A-equipped bikes include:
Cannondale SuperSix EVO (BB30A models)
Cannondale Synapse Carbon (BB30A models)
Cannondale CAAD10 and CAAD12
Cannondale SystemSix
Cannondale Slice
Many Cannondale road and gravel frames using the BB30A standard
Important: This bottom bracket is designed for BB30A frames only and is not compatible with standard BB30, PF30, BB86, BB92, BBRight, T47 or threaded BSA bottom bracket shells.
Compatible Cranksets
SRAM Red GXP
SRAM Force GXP
SRAM Rival GXP
SRAM Apex GXP
SRAM GX GXP
SRAM X0 GXP
SRAM XX GXP
Truvativ GXP cranksets
Other cranksets using the SRAM/Truvativ GXP 22/24mm spindle standard
Installation & Tool Requirements
Installs using a standard 16-notch external bottom bracket tool interface.
Compatible with the Wheels Manufacturing BBT-OUT Bottom Bracket Socket.
Compatible with Park Tool BBT-69.4, BBT-69.4-2 and BBT-79 bottom bracket tools.
A torque wrench should be used during installation to achieve the specified tightening torque.
Professional installation is recommended where frame inspection or preparation is required.
Why Choose an Outboard Bottom Bracket?
Traditional BB30A conversion systems often rely on smaller bearings housed inside the frame shell, limiting bearing size and service life. Wheels Manufacturing's outboard design moves the bearings beyond the shell, allowing the use of larger ABEC-3 bearings that better handle pedalling loads and contamination.
The result is a smoother-running drivetrain, longer bearing life and improved reliability for riders who demand maximum performance from every component. Whether chasing race results or simply chasing the horizon, the BB30A Outboard Bottom Bracket is built to keep turning smoothly mile after mile.
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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 HEREto 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.
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.
Contact us with any questions you have about this product
