Monitor carbon wheels

from £845.00 / pair

Meet the Monitor, our lightweight off-road carbon wheelset. Stiff and responsive with 26mm internal rim width and weights as low as 1366g/pair for 29er wheels.


We also have one of each Monitor carbon 27.5″ rims in 24 hole and 28 hole that are plain with no decal. Please contact us if you are interested in these rim to check they are still available before ordering.

build time for this wheelset: 10 days
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The Monitor is a tough wheelset fast off-road riding and follows on from our ever popular Gecko gravel/CX wheelset with a wider, stronger rim suited to 40mm or larger tyres. The wheelset features our usual choice of hub options with centre-lock or 6-bolt disk mounts available as well as straight-pull or traditional J-bend spokes.

Weights from 1300g/pair (650b) and 1366g/pair (29er) with Centre-lock straight pull hubs.

Hubs are 6 pawl, 48 point engagement hubs with premium stainless bearings, rims are asymmetric for maximum strength and stiffness at low weights, and are tubeless ready – supplied with tubeless tape fitted, valves available separately. The rims have a matt UD finish and no braking surface. Recommended tyre sizes are 38mm or larger for gravel tyres, although it is also possible to use road tyres 28mm+ at pressures 70psi (4.8 bar) or under.

The wheels are finished with tubeless rim tape but valves are extra. A crash replacement scheme applies to all JRA carbon wheelsets.

hubs: jra centre-lock or 6-bolt, j-bend or straight-pull hubs 24 hole
freehub: Shimano 11spd (with spacer for 10sp), Sram XD, Campag or Shimano Microspline (depending on hub choice).
axles: QR, 9mm, 12mm, 15mm, Boost
axle: QR, 12x135mm or 12x142mm, Boost
decals: laser etched monitor logo or coloured vinyl options

rims: JRA Monitor carbon in 650b or 29er. 397g rim weight (29er), 32mm external, 25mm depth and 25mm internal width.
decals: water transfer decal in colour options shown

spokes: Sapim CX-Ray bladed spokes – black)

weight (29er wheelsets): 

Straight pull centre-lock front 631g / rear 754g (pair 1385g)
Straight-pull 6-bolt 1415g

J-Bend centre-lock 1446g / J-bend 6-bolt 1510g

Additional information

material & finish


rim dimensions
internal rim width





wheel size


bead hook


braking options

6-bolt disk brake, centre-lock disk brake


1385 g

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