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Omschrijving
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Eigenschappen
Eigenschappen
Front axle 110 x 15mm axle
Rear axle 148 x 12 mm axle, I will specify this later
Rim materials Carbon
Freehub body Campagnolo N3W, Shimano Microspline, SRAM XD/XDR
Disc brake rotor front 140 mm disc, 160 mm disc, 180 mm disc
Disc brake rotor rear 140mm disc, 160mm disc, 180 mm disc
ANT+ Yes
Bluetooth Yes
Ideal for MTB XC riding
Tubeless ready Yes*
Tubular version No
Wheel size 29"(622)
Tyre types Clincher – Tubeless ready
Freehub system DT Swiss Ratchet System (36 teeth)
Brake type Disc brake only
Weight 1990 g (boost)
Rim type Carbon, TLR
Rim height 28 mm
Rim inner width 30 mm
Spoke offset 2.5 mm
Hub type Boost (110 mm front, 148 mm rear)
Max. system weight 110 kg (rider + bike)
Number of spokes 28
Spoke type DT Swiss Competition Race (1.6 mm)
Spoke nipple type DT Swiss Pro Lock 2.0 mm (aluminum)
Tyre used for specs 29×2.25" tyre (57-622)
Inflation on the fly While riding
Deflation on the fly During standstill, While riding
Average inflation rate 200-250 mbar/min at 25 km/h
Average deflation rate >100 mbar/s
Inflation rate related to riding speed? Yes
Deflation rate related to riding speed? No
Average power consumption during inflation 2 – 4.5 W at 25 km/h, between 1 and 6 bar (per wheel)
Average power consumption during deflation 0 W
Tyre pressure operating range 0.5 – 6.0 bar
Safety valve (color) black (3.5 bar)

The revolution is here
We all know riding on mountainbike trails can be demanding. Because the surface of the trail changes throughout the ride it’s always a compromise (or gamble) which tyre pressure you need for the front and rear tyre when you go out for your ride. In the end you often settle for the middle ground regarding tyre pressure. After years of research and engineering we have developed high-end wheelsets which enable you to manage your tyre pressure during your ride.
The lightweight wheels compose of carbon rims and advanced hubs, in which a miniature high-pressure pump is stored. This pump is driven by the rotation of your wheels: by you. Via an integrated clutch unit and electro-pneumatic wireless control system the pump gets only active on demand. The wheels are fully compatible with standard bikes with disc brakes. You manage your tyre pressure wireless from your handlebars. Meanwhile, all relevant information can be displayed on your bike computer or smartphone.
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Specifications
GRAVAA XC-28 DOMINATE THE MTB TRAILS GRAVAA GX-30 UNLEASH YOUR GRAVEL POTENTIAL Ideal for MTB XC riding Bike touring, Gravel riding Wheel size 29"(622) 29"(622) Brake type Disc brake only Disc brake only Weight 1990 g (boost) 1970 g (non-boost) Rim type Carbon, TLR Carbon, TLR Rim materials Carbon Carbon Rim height 28 mm 30 mm Rim inner width 30 mm 25 mm Tyre types Clincher - Tubeless ready Clincher - Tubeless ready Tubeless ready Yes* Yes* Tubular version Hub type Boost (110 mm front, 148 mm rear) Non-boost (100 mm front, 142 mm rear) Max. system weight 110 kg (rider + bike) 110 kg (rider + bike) ANT+ Bluetooth Disc brake rotor front 140 mm disc, 160 mm disc, 180 mm disc 140 mm disc, 160 mm disc, 180 mm disc Disc brake rotor rear 140mm disc, 160mm disc, 180 mm disc 140mm disc, 160mm disc, 180 mm disc Number of spokes 28 28 Spoke offset 2.5 mm 2.5 mm Spoke type DT Swiss Competition Race (1.6 mm) DT Swiss Competition Race (1.6 mm) Spoke nipple type DT Swiss Pro Lock 2.0 mm (aluminum) DT Swiss Pro Lock 2.0 mm (aluminum) Freehub system DT Swiss Ratchet System (36 teeth) DT Swiss Ratchet System (36 teeth) Freehub body Campagnolo N3W, Shimano Microspline, SRAM XD/XDR Campagnolo N3W, Shimano Microspline, SRAM XD/XDR GRAVAA XC-28 DOMINATE THE MTB TRAILS GRAVAA GX-30 UNLEASH YOUR GRAVEL POTENTIAL Tyre used for specs 29x2.25" tyre (57-622) 29x1.50" tyre (40-622) Inflation on the fly While riding While riding Deflation on the fly During standstill, While riding During standstill, While riding Tyre pressure operating range 0.5 - 6.0 bar 0.5 - 6.0 bar Average inflation rate 200-250 mbar/min at 25 km/h 400-450 mbar/min at 25 km/h Average deflation rate >100 mbar/s >200 mbar/s Inflation rate related to riding speed? Deflation rate related to riding speed? Average power consumption during inflation 2 - 4.5 W at 25 km/h, between 1 and 6 bar (per wheel) 2 - 4.5 W at 25 km/h, between 1 and 6 bar (per wheel) Average power consumption during deflation 0 W 0 W

Gravaa enables you to control tyre pressure on the fly
After years of developing, prototyping and testing we are ready to hit the markets with our revolutionary wheelsets. You can manage the tyre pressure with a flick of the thumb while riding. This can be done via a wireless control unit that is mounted on the handlebars. Next to the fact that your tyre pressure is shown on a bike computer it can also be displayed via a GRAVAA app on your smartphone. This mobile app will be made available for download in the Google Play Store and Apple App Store.Want to know more? Read more about our technology here.
Get 20% off now and pay for this wheelset in 2 installments:
- Immediately: 10% of sales price
- At delivery: 90% of sales price
Use the pre-order button and configure your desired wheelset.
