Mahi Mahi disk brake wheels – Ltd edition ready built

from £718 was £845 / pair

Ready-built options for our ltd edition Mahi Mahi disk brake 40mm wheelsets

build time for this wheelset: 2 days
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A limited edition version of our most popular carbon road disk wheelset, our 40mm Mahi Mahi rim is now available in a semi-gloss finish with a new decal design in 2 colour options; grey and light blue.

The 40mm deep disk-specific rim design allows for optimised aerodynamics while the low weight is an important part of the lively, responsive feel and streamlined performance of these wheels in all weather conditions. As with all our wheels they are handbuilt by us in our York workshop for perfect build quality every time with a choice of hub colours and spoke nipples for the perfect fit with your bike. As standard we build these wheels onto our lightest, most popular hub choice, the centerlock disk straight-pull version. Please contact us if you would like these wheels built onto any of our other hubs.

40mm carbon rims

internal width: 22mm
external width: 29mm
depth: 40mm
bead hook: semi-hook
material: UD matt carbon weave
finish: semi-gloss black finish
decal: water transfer
The rim is optimised for best aerodynamic performance with tyres measuring around 25-28mm, while the 22mm width allows for lower tyre pressures without increasing rolling resistance – we recommend 60-80psi for most riders.

straight-pull hubs

bearings: stainless steel
finish: matt shot blasted
decal: laser etched with scribble design

Key components

hubs : JRA straight-pull hubs hubs with laser etched (please contact us for dynamo or J-bend hubs)
rim : JRA Mahi mahi 40 carbon rims – 24 hole
spokes : Sapim CX-Ray straight-pull black spokes
nipples :  Sapim aluminium or brass secure-lock nipples
weight: pair 1483 g (front 685g / rear 798g)
freehub: Shimano 11 speed or Campagnolo 12 speed are included in base price. All other freehubs are available at extra cost.

rider weight limit: 90kg other hubs with a higher rider weight limit are available.
recommended tyre widths: 25mm – 34mm

Additional information

rim data
external rim width


internal rim width


rim depth

wheel size

bead hook


spoke nipple type


rider weight limit

midweight – up tp 100kg




riding type


1500 g

why buy from us


All wheels have a 3 year warranty on build quality and components, with a longer 5 year warranty for hub shells.
See our warranty page for more details and the small print.


To ensure reliable, prompt delivery our wheels are shipped via UPS to almost all locations in the UK and worldwide.
see our delivery page for more details.


All of our wheels are fully repairable. We stock a complete range of spares and can service, rebuild or repair any wheel sold by us.
order servicing here.

about us

We’ve been building wheels since 2005 and selling online in 2006. We developed our wheel building process and refined the components we offer for more than 17 years to offer reliable a wheels.
read our story here.

our hubs

Just Riding Along wheelsets are built around premium quality hubs from Bitex in Taiwan. We have used these hubs on all of our own-brand wheelsets since 2014 with proven reliability and durability.


All wheels include a 5 year warranty on hub shells, and 3 year on all other parts.

Bearing wear is not included.


6 pawls in 2 groups engage the drive ring inside the hub shell. The groups are offset slightly to double the points of engagement (POE) for a fast response to pedal input. M-type hubs have 54 POE, R-type hubs have 48 POE.


  • Durable
  • changeable axles
  • repairable
  • lightweight
  • TPI bearings
  • anti-bite guard
  • laser etched decals

about your wheels

ready built wheels

This wheelset is built in our workshop in advance so you can receive it quicker. We normally despatch the wheels in 1-2 days and you should receive them the next day.

what’s included

  • Wheels are set-up with the axles and freehub you have selected.
  • All wheels have tubeless tape applied.
  • There are no additional parts provided.

build quality

During the building process all components are bedded in, stretched, and tensioned repeatedly so the wheels won’t go out of true. We inspect, check and finish every wheel with equal care.

handbuilt in the UK

We built the wheels in our York, UK workshop.

Configure your wheels