The perfect gravel wheels to explore any terrain without limits with an ultra-light weight.
The GR40 offers you a perfect width for wide tires and an aerodynamic profile to be able to maintain good speed on the road.

To resist extreme terrain we have reinforced the walls and applied 3K to the spoke hole area. Equipped with PAL-TECH Nitro technology hubs and low friction ceramic bearings.

These wheels allow you to move the bike with great agility in any terrain and also in competition.
Rims: Available for Tubeless Ready 

Graphene multilayer carbon fiber.
Super lightweight disc brake design.
Carbon UD and 3K spoke holes.
Air+Plus High-Speed Technology.
New Spectro finish. Visible fiber with final finish with transparent varnish, pure carbon racing style. 
ERD: 565mm

Profile: Profile: 40mm
External width: 30mm
Internal width: 24mm
Hubs: Nitro Ceramic Road Disc Center Lock
Spokes: SAPIM Aero CX‐RAY 24 Straight pull.
Hand Built with alloy nipples and secure lock.
Quick release/axles: 12x100 / 12x142
Colors: Black/Black
Weight: Set Tubeless Ready: 1.360 gr
Limits: Recomended rider weight limit: 120 kgs
Recomended tyre sizes: 30mm to 45mm
Options: Shimano HG cassette body compatible
Campagnolo cassette body 10/11S compatible
Sram XD-R cassette body 12S compatible
What is included?:

Replacement spokes.
Progress wheelbag.
Progress PG-709 valve extension.
Progress PG-719 Super PG Tubeless valves.
PG-760 Reflective stickers.
Shimano 12s cassette spacer.
Shimano 10v cassette spacer.

2 Warrany years + 1 year 50% Crash replacement rim.

(Disc brake rotors are not included).

Front wheel

Rear wheel

New Spectro finish

Graphene rim

Nitro Ceramic Center Lock

Accessories included

3M High Reflective sticker included



AIR+PLUS High speed technology

Why is aerodynamic so important to your wheels?
When you race 40km/h your wheels are spinning double 80km/h, hard cross winds are capable to throw you from the road.
With our wheels lateral wind is no longer a problem anymore thanks to the extra wide and latest U-shaped design.
This design allows the use of wider tires without negatively influence on the wind flow, more tire volume, lower rolling resistance and better handling in crosswinds condition. 23 to 28mm tires are seating totally integrated into the rim shape and do not offer extra friction.
This shape has high aerodynamic efficiency in accordance to latest scientific findings from wind tunnel testing’s.
Comparing to regular V-Shape rims we reduced drag and crosswind drag coefficient by more than 30%.


High precision aligned bearing seats with parallel drilling technology made by high-tech CNC 5-axis machine.
100% parallel to the axis of the spindle.
Less friction more speed and longer bearing life.

PSG (Perfect Spoke geometry)

Every Progress Wheel is designed for his specific operation purpose. Our choice of rim, hubs, spokes and lacing pattern isn’t just a coincidence.
We strengthen rims at every spoke hole on each rim we develop. The spoke hole and nipple seat is perfectly aligned with hub and spoke angle.
This creates a perfect spoke geometry which allows us to use high spoke tension by an evenly and equal tension distribution. Releasing excessive stress from spokes we get long-lasting and high performance on every wheel.
We create winning wheels
World Triatlon
Enduro World Series