Hope Pro 4 hubs hand built into Stans Flow EX3 rims


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Moonglu Wheelworks hand built mountain bike wheels

All Mountain and Enduro wheels featuring Hope Pro 4 hubs and Stans Flow EX3 rims. Wide profile, strong but lightweight, ideal for enduro and downhill racing.

Customer Notice 01.01.21. Please read before ordering. 

Hope are still producing Pro 4 hubs but there is a significant backlog. Currently hubs are taking approximately 2 wheels to come through from Hope. This will have a knock on effect on our wheels. It is likely that custom wheel orders will now be 2-3 weeks for delivery. Please only order if you are happy to wait for your wheels. We cannot give refunds for cancelled orders as they are all custom. For those that do order, we appreciate your business and will get your wheels to you as promptly as possible. You will get your wheels but you'll have to wait in line for delivery. Thanks for your patience.  

Hope's brand new Pro 4 6 Bolt Disc Mountain Bike Hubs handbuilt onto Stans No Tubes Flow EX3 Enduro and downhill rims. Available in 27.5" or 29", the Flow EX3 sets new standards for tubeless compatible premium mountain bike rims. With a 29mm internal width and 32.6mm external these are wide enough for tyres up to 2.8". 

All our wheels now have the option of Sapim Double Square Secure Lock Alloy or Brass in Silver or Black. The use of these nipples allows us to use a slightly longer spoke for added strength and to build the wheels from the outside, reducing tooling marks on the spoke nipple. 

Build specification:

Wheel Weight

  • Front Wheel - g
  • Rear Wheel - g
  • Total Weight - g (27.5" Rim with Standard Spokes)
  • 27.5" Rim only - 580g
  • 29" Rim only - 618g

Hub Axle Options

Front Wheel Rear Wheel
9mm Standard Quick Release 10mm Standard Quick Release
9mm Thru Axle (DT RWS type) 10mm Thru Axle (DT RWS type)
15mm Thru Axle (Torque Caps Available to Order) 135 x 12mm Thru Axle
20mm Thru Axle 142 x 12mm Thru Axle
110 x 15mm BOOST Thru Axle 148 x 12mm BOOST Thru Axle

Further Information

  • The rear wheel can be supplied with the option of 9/10/11 speed compatible alloy or steel freehub body or SRAM XD drive compatible.
  • These rims are tubeless compatible, they will be supplied by Moonglu with 2 rounds of tubeless tape.
  • For all the wheel aficionados, we build all our wheels with the hub logo lined up with the rim valve hole. A small matter, but important to those with a wheel fetish.
  • The wheel weights quoted above are genuine, complete wheels measured in the shop.
  • For further information about our hand built mtb wheels please refer to our Wheel Building FAQs.
  • Warranty Policy

Build time

Before ordering these wheels, please understand that the wheels will generally be built to order from the component parts. Items shown instock will be instock in their component parts, ready to be laced up, tensioned and trued. In most cases we can't pluck these wheels off the shelf, pack them into boxes and dispatch them, if only life was that easy. We will do our utmost to make the turnaround time as quick as possible (currently 2-3 weeks), but if you are in doubt, please Contact us first. 

Wheel Builder's Comments

Proving to be one of our most popular wheelsets both by sales and internet searches. Customers are clearly looking for handbuilt quality, strong and lightweight wheels with Hope's incredible Pro 4 hub with their multitude of colours and options. 

Buy these if you're looking for a quality upgrade with easy tubeless set up. Their wide profile makes these ideal for trail and enduro and the extra width will help support the tyre better in corners. 

Stock, Shipping and Returns

Shipping Destinations: United Kingdom and Europe (additional shipping cost for Europe) 

Returns Class: Custom

Delivery: Free in the UK

Click and Collect: Yes


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Moonglu Independent Bike Shop | 57 Blossomgate | North Yorkshire | HG4 2AN | info@moonglu.com | 01765 601106


Ask a Question
  • Hi, just about to buy hope pro4 hubs with Stans ex3, but need to confirm a few things first, my bike has NX SRAM, this needs normal Shimano freehub ? Not the XD driver? And if we upgrade the drivetrain to eagle gx we can upgrade the freehub? Cheers


    Good morning, thanks for your message. 

    If you have an NX cassette currently you'll need the Shimano 10/11 speed freehub in alloy or steel. If you decide to update to a GX cassette in future you would need the Pro 4 XD freehub upgrade. These are readily available and easy to swap. 

    I hope this helps

    Neil @ Moonglu

  • Hi! I would be interested in a set of Stan’s Flow wheels for XC cycling and also bike packing. Do you know what the recommended weight limit for these is and do you think they would be a good wheelset for the above mentioned purposes? My weight is 85kg. Thanks, Simon


    Thanks for your message. The Flow EX3 rims are very robust and would be certainly capable of XC riding and bike packing. They don't publish a weight limit but I would estimate 110kg based on other manufacturers. 

    If you would like to discuss this further please email info@moonglu.com

    Kind Regards
    For Moonglu

    Neil Dunkley

  • Hello Would it be possible to have this option build for the Flow MK3 rims instead of the ex3? I'm not particularly heavy and wouldn't need the extra durability and weight provided by the EX3. thank you


    Thanks for your message. Unfortunately the Flow MK3 is now discontinued and replaced by the Flow EX3. It is a heavier duty rim than the Flow Mk3 and more durable but ultimately heavier. 

    If you're looking for a wide profile rim that isn't built as heavy as the Flow EX3 I'd recommend the DT Swiss XM481.


    Many Thanks

    Neil @ Moonglu

  • Hi, in regard to the front 15x110 boost with torque caps, (hope pro4 front hub) I am looking to run 20x110 boost forks - specifically boost, are the torque caps for 20mm conversion in the 110 boost spacing? Thanks

    Thanks for your message. 

    The Torque cap option is only available on the 15mm thru axle hubs. 20x110mm BOOST are a more standard style end cap. 

    Out if interest which forks would this be for?

    Kind Regards
    For Moonglu

    Neil Dunkley

  • Hi I'm looking at ordering the following: Hand built Hope Pro 4 hubs with Stans Flow EX3 rims Pro 4 Front MTB Hub: Hope Pro 4 - 110 x15mm BOOST Pro 4 Rear MTB Hub: Hope Pro 4 148x12mm BOOST Hope Freehub Body: SRAM XD Drive for 11/12 Speed (inc Eagle) Hope Hub colour: Orange Brass Nipple: 14mm Black Brass Wheel Size: 29" Spoke Option: DT Competition Could you give me an idea on how long until delivery? Also, are there any issues running sram centreline rotors on hope hubs? Thanks!


    Good morning, many thanks for your message. 

    Delivery time on that wheelset would be 7-10 days from the time of order. 

    I've not experienced or read about any issues with Centreline rotors on Hope Pro 4 hubs. They are both 6 bolt interface. 

    If you have any more questions please don't hesitate to ask.

    Kind Regards
    For Moonglu

    Neil Dunkley

  • Hi, what sort of weight are the flow ex3s on Pro4 hubs with the cx Ray spokes?


    Good morning, many thanks for your question. I can't give you an exact weight on that wheelset as yet but I have just taken an order for one so if you can give me a few days I will let you know. Was it 27.5" or 29"?

    Many thanks

    Neil @ Moonglu

  • Hi, I'm looking for a new wheelset, and interested in a set of Flow EX3s on Hope Hubs. I was hoping to get some before going to Whistler on 15th May, but realise this may be a bit late now. Would you be able to give me a build time for the following spec? Hand built Hope Pro 4 hubs with Stans Flow EX3 rims Pro 4 Front MTB Hub: Hope Pro 4 - 110 x15mm BOOST Pro 4 Rear MTB Hub: Hope Pro 4 148x12mm BOOST Hope Freehub Body: SRAM XD Drive for 11/12 Speed (inc Eagle) Hope Hub colour: Orange Brass Nipple: 14mm Silver Brass Wheel Size: 27.5" Spoke Option: DT Competition Many Thanks Jamie


    Good morning, many thanks for your email. There shouldn't be a problem building those wheels, even within the timeframe for your trip to Whistler. We do have 1 pair of rims left from our first drop of Flow EX3s. If you want to go ahead please select you options from the drop down menus and make payment through our website:


    Any problems, please let me know. 

    Kind Regards
    For Moonglu

    Neil Dunkley