Description:
The Cervelo Aspero GRX RX820 builds on gravel racing heritage with refined engineering for endurance performance. This iteration introduces a threaded bottom bracket, optimized cable management, and UDH-compatible derailleur hanger for modern drivetrain compatibility. Enhanced aerodynamics conserve energy during extended efforts—those marginal watts matter when fatigue sets in. Dropped seat stays improve rear compliance while increasing mud clearance, and a slightly softer front end reduces impact fatigue on long efforts. The result is a gravel platform that delivers speed without sacrificing comfort or versatility across varied terrain and conditions.
| Category | Item | Specification |
|---|---|---|
| General | Color | Black / Charcoal |
| Model Name | Áspero GRX RX820 | |
| Sizes | 48, 51, 54, 56, 58, 61 cm | |
| Frameset | Fork | Cervélo All-Carbon, Tapered Áspero Fork |
| Headset | FSA IS2, 1-1/4 (45×45°) / 1-1/2 (36×45°) | |
| Front Thru Axle | Cervélo Aero TA, M12×1.5, 127mm | |
| Rear Thru Axle | Cervélo Aero TA, M12×1.0, 169mm | |
| Drivetrain | Rear Derailleur | Shimano GRX RX820 |
| Front Derailleur | Shimano GRX RX820 | |
| Crankset | Shimano GRX RX820, 48/31T | |
| Crank Sizing | 48–51: 165/170mm; 54–56: 170mm; 58–61: 172.5mm | |
| Cassette | Shimano HG710, 11–36T, 12-speed | |
| Chain | Shimano M8100 | |
| Bottom Bracket | FSA T47 BBright, 24mm spindle | |
| Controls | Shifter/Brake Levers | Shimano GRX RX820 |
| Brakes | Brake Rotors | Shimano CL800 Centerlock |
| Wheels & Tires | Front Wheel | Reserve 30 GR AL / Reserve 4LD, 12×100mm, 24h, CL, tubeless |
| Rear Wheel | Reserve 30 GR AL / Reserve 4LD, 12×142mm, XDR, 24h, CL, tubeless | |
| Tires | WTB Vulpine TCS Light Fast Rolling Dual DNA, 700×45c, 60 tpi | |
| Max Tire Width | 700c: 45mm / 650b: 47mm | |
| Cockpit | Handlebar | Cervélo AB09 Carbon, 31.8mm clamp, 16° flare |
| Handlebar Sizing | 48: 36cm; 51: 38cm; 54–56: 40cm; 58–61: 42cm | |
| Stem | Cervélo ST36 Alloy | |
| Stem Sizing | 48–51: 80mm; 54–56: 90mm; 58–61: 100mm | |
| Seatpost | Cervélo SP19 Carbon, 27.2mm | |
| Seatpost Sizing | 48–56: 0mm offset; 58–61: 15mm offset | |
| Saddle | Prologo Nago R4 PAS Steel | |
| Accessories | Included | - Cervélo Front Mount 810- Cervélo Rear Accessory Mount- Cervélo Smartpak Top Tube Bag 400A |