Sector GCa - Gravel, Adventure or Cyclocross Aluminium Wheelset
Sector GCa - Gravel, Adventure or Cyclocross Aluminium Wheelset

GCa Aluminium Adventure Wheelset

The Sector GCa is THE wheel for Gravel, adventure riding and Cyclo-Cross.


The Sector GCa Wheelset is the perfect Gravel, Adventure or Cyclo-Cross premium Aluminium Wheelset. It features a heat treated and then cold worked Aluminium lightweight tubeless ready rim with a 23mm internal width, optimised for 30mm to 50mm tyres. The rim is both pinned and welded making it incredibly strong, and combining this with the wide profile, will withstand punishing ‘Cross courses, all day Gravel epics or your next bike-packing adventure. The GCa is available in both 700c and 650b options.

This Sector gravel and cyclocross wheelset is built around lightweight, CNC machined and angled flanged hubs. The angled flanges follow the path of the spoke, reducing the stress on the spoke and increasing its lifespan. The GCa hubs are easily adaptable to a Sram XDR driver or a Campagnolo freehub body. Smoothness is everything in a hub and that is why we chose Revo Cream bearings, which as the name suggests, are one of the smoothest and best rolling bearings on the market. We supply the wheels with tubeless tape and valves fitted, and both Thru Axle end caps and QR end caps, so that your wheels are ready to fit, straight from the box.

The Sector GCa hubs and rims are laced together with Pillar 1416 double butted spokes. Pillar spokes are favoured by wheel builders all over the world, as every spoke is meticulously monitored and checked throughout the entire production process, and this attention to detail ensures all our wheels are evenly tensioned and will stay truer for longer. For the GCa we have chosen the double butted 1416 for their high strength and low weight. We have built this wheelset with Pillar black brass nipples as durability is key with our wet UK winters.

GCa Wheel Set Specification
Wheel Size 700c and 650b options
Rim Material 6061 T-10 Aluminium
Spokes Pillar 1416 DB J-Bend - 276/278 (650b), 295/297 (700c).
Nipples Pillar Black Brass
Hub Rotor Fitment Centrelock
Freehub 11 Speed | 4 Pawl | Shimano HG
Holes 28h
Rim Width (Internal) 23mm | (External) 28mm
Rim Depth 22.5mm
ERD 700c 592mm | 650b 557mm
Tubeless Yes
End Caps (Front) 100x12mm or QR | (Rear) 142x12mm or QR
Included Extras Tubeless Valves and Tape
Weight 700c 1750g | 650b 1680g


For replacement rims check out the Rim Page.


Spoke Name T ØD1 ØD2 α H L Weight (260mm)
Pillar 1416 J-Bend Double Butted 9.0 2.0 1.6 95° 6.2 160-310 4.7g
All dimensions in mm

Pillar Black Brass

Complete freehub available as a spare: Click Here

For any other technical queries please get in touch -


All Sector aluminium rims, or carbon rims without Innegra tech, are guaranteed against manufacturing defects for three years after the original purchase date of the product, except decal defects, which are covered for one year only.

For full Warranty information Click Here.

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