Cervelo Aspero RX820 - 2026

In 2019, the Cervélo Áspero ushered in a new era in gravel riding, combining speed and efficiency. This 2026 version retains that performance-oriented DNA while benefiting from several significant improvements. More aerodynamic and comfortable, it features a T47 threaded bottom bracket, a universal UDH derailleur hanger compatible with recent SRAM drivetrains, and even more streamlined cable routing. With its lowered seatstays, it gains in flexibility and comfort over long distances, while maintaining responsive and efficient handling.

The aerodynamics of this new frame aren't just about pure speed: they also help conserve the rider's energy. According to Cervélo, the three watts saved compared to the previous version, especially when facing the wind, represent one less energy gel to consume on a long ride. This makes the 2026 Cervélo Aspero GRX RX820 marigold ready to take on demanding gravel races like the Unbound, while offering increased versatility thanks to its expanded mud clearance and numerous accessory mounting options.

Frame

Gravel-optimized carbon Cervélo with dropper seatstays | T47a asymmetric threaded BBright bottom bracket | SRAM UDH universal derailleur hanger | Internal cable routing | ST31 and HB13 cockpit compatibility for fully integrated cable routing

Fork

Cervélo All-Carbon, Tapered Aspero Fork

Headset

FSA IS2 1-1/4, 45° x 45° / 1-1/2, 36° x 45°

Gallows

Cervélo ST36 Alloy

Handlebar

Cervélo AB09 Carbon, 31.8 mm clamp, 16° flare

Seat post

Cervélo SP19 Carbon 27.2

Saddle

Prologo Nago R4 PAS Steel

Front derailleur

Shimano GRX RX820

Rear derailleur

Shimano GRX RX820

Cassette

Shimano HG710, 11-36 teeth, 12 speed

Chain

Shimano M8100

Crankset

Shimano GRX RX820, 48/31 teeth

Bottom bracket

FSA , T47 BBright for 24mm axle

Levers and stirrups

Shimano GRX RX820

Discs

Shimano CL800 Centerlock

Front wheel

Reserve 30 GR AL, Reserve 4LD, 12x100 mm, 24H, centerlock, tubeless compatible

Rear wheel

Reserve 30 GR AL, Reserve 4LD, 12x142 mm, XDR freehub, 24H, centerlock, tubeless compatible

Tires

WTB Vulpine TCS Light Fast Rolling Dual DNA 60 tpi 700x45c

Maximum tire width

700c: up to 45 mm | 650c: up to 47 mm

Front axle

Cervélo Aero Thru Axle Front, M12x1.5 mm, 127 mm

Rear axle

Cervélo Aero Thru Axle Rear, M12x1.0 mm, 169 mm

Front support

Cervélo Front Computer/Accessory Mount 810

Rear support

Cervélo Rear Accessory Mount

Bag

Cervélo Smartpak Top Tube Storage Bag 400A

Available sizes

48cm, 51cm, 54cm, 56cm, 58cm, 61cm

Handlebar width

48: 36 cm | 51: 38 cm | 54 and 56: 40 cm | 58 and 61: 42 cm

Stem length

48 and 51: 80 mm | 54 and 56: 90 mm | 58 and 61: 100 mm

Seatpost offset

48, 51, 54 and 56: 0 mm | 58 and 61: 15 mm

Crank length

48, 51, 54 and 56: 170 mm | 58 and 61: 172.5 mm