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