Monitor strong carbon wheels

from £850.00 / pair

The Monitor strong is a beefed-up version of our lightweight off-road Monitor wheelset built to survive long journeys and heavier riders. Stiff and responsive with 25mm internal rim width and weights as low as 1425g/pair for 29er wheels. 28 hole rims.


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 for the Monitor strong are from 1385g/pair (650b) and 1425g/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 60psi 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

rims: JRA Monitor carbon in 650b (360g) or 29er (390g). 32mm external, 25mm depth and 25mm internal width.

spokes: Sapim D-Light – black (CX-Ray upgrade option available)

weight (29er wheelsets): 

Straight pull centre-lock front 631g / rear 754g (pair 1425g)

Additional information

Weight 1385 g





internal rim width