Monitor alu Core wheels – boost width hubs

from £300 / pair

Boost width 6-bolt hubs. Tough wheelset for fast cross-country off-road riding with a wide, strong rim suited to 34-60mm tyres (up to about 2.3″ mountain bike tyres)

Hub close up pictures show the right hub with a different rim design.

Please ask for non-boost 6-bolt hubs, these can be built for the same cost but are not pre-building these wheels.

build time for this wheelset: 2 days
jump to configure wheels >>

SKU: JRA_MM_8-1-1-1-2-1 Category: Tags: ,


The Monitor is a tough wheelset fast off-road riding with a wide, strong rim suited to 34-60mm tyres. In our Core series Boost width wheels it is built onto our proven reliable 6-bolt J-bend hubs for a light weight, fast wheelset at a new lower price.

Monitor Core wheels are built with Sapim D-Light spokes which offer the best mix of light weight, strength and low price. Available in 27.5″ or 29er/700c, with 24 or 28 spokes per wheel for lighter weight or greater strength.

Key components

hubs : JRA 6-bolt J-bend Boost 110/148 hubs with laser etched JRA logo, steel bearings
rim : Monitor aluminium rims, tubeless compatible, hook bead, with laser etch graphics
spokes : Sapim D-Light J-bend black spokes
nipples :  Sapim silver brass secure-lock nipples
weight: with Sapim D-light spokes – pair 1585g (front 735g / rear 850g)
freehub: Shimano 11 speed is included in base price. All other freehubs are available at extra cost, shown in wheel configurator.

rider weight limit: 24 spokes: 85kg, 28 spokes: no limit
recommended tyre widths: 34mm – 60mm

Additional information

rim material & finish

6069 aluminium

rim data
external rim width


internal rim width


wheel size


hole count



front lacing pattern

2 cross

rear lacing pattern

2 cross

riding type





1536 g

Core series wheels

Our back to basics wheel range, we’ve cut out the frills – such as colours and kept to simpler specs to keep the price down. But we haven’t compromised on the build quality or the wheels core functionality, hence the name Core wheels.
  • TPI steel bearings not TPI stainless steel – Excellent bearing without the top prices we pay for stainless
  • Sapim silver brass pro-lock nipples used throughout – These reduce the wheel building time by being non-binding
  • J-bend hubs The lowest price and most reliable hubs in our range
    Limited options allow us to build multiple wheels at once saving time in the workshop.
  • Limited logos Smaller logos that take less time to etch

All our wheels are still handbuilt in our York workshop with the same high quality of finish, backup and warranty you would expect.

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

custom built wheels

This wheelset is built to order. We hold most parts in stock and build them after you have ordered. The build time is advertised on the front page on under the title.

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

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