2026 Cervélo Áspero-5 GRX RX825 Di2 1, Royal Mercury 56cm
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- Assemble your Bike: build to your specifications
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Description
FASTER THAN THE REST
This 2026 Cervélo Áspero-5 GRX RX825 Di2 1, Royal Mercury (silver) 56cm is an all-new Áspero-5 built for the front end of the race and is the most aerodynamic gravel bike ever created. Cervélo has long been synonymous with aerodynamic performance, and we’ve brought that 30 years of expertise to gravel racing. The new bike is a stunning 37 Watts faster than the outgoing model, and 34 Watts faster than its nearest competitor.
With clearance for 45mm tires, downtube storage, and a threaded bottom bracket, Áspero-5 is ready to race the second it rolls off the shop floor. It made its rainbow-jersey debut (and won!) under UCI Gravel World Champion Marianne Vos, and will be campaigned by some of the most elite bike racers in the world.
SHAPE OF SPEED
Áspero-5 is 37 Watts faster than its predecessor, and 34 Watts faster than the nearest competitor. Cervélo has long led the industry in aerodynamics, and we’ve delivered a gravel race bike worthy of that reputation. The aero handlebar and stem are responsible for nearly 6 Watts of that savings on their own.
WEIGHT
The new Áspero-5 is 66 grams lighter than its predecessor, despite adding a significant amount of surface area to improve aerodynamic performance.
MIX & MATCH TIRE GEO
When fitted with equally-sized tires (e.g. 42mm front and rear), Áspero-5’s handling is stable, confidence-inspiring, and ready for the roughest courses. To increase aerodynamics even further, and sharpen handling for less-technical courses, we optimized the geo for a 4mm tire width differential (e.g. 40mm front, 44mm rear).
DOWNTUBE STORAGE
First seen on the P-Series triathlon bike, we’ve implemented our industry-leading downtube storage door on the Áspero-5. It’s the lightest and most aerodynamically efficient system on the market, and puts a tube, tools, and a flat kit inside the frame and out of the wind.
SPECS
| COLOR | Royal Mercury |
| FRAME SIZE |
56cm
|
| FORK | Cervélo All-Carbon, Tapered Aspero-5 Fork |
| HANDLEBAR | Cervélo HB16 Carbon, 31.8mm clamp |
| STEM | Cervélo ST31 Carbon |
| SEATPOST | Cervélo SP27 Carbon |
| SADDLE | Prologo Nago R4 PAS Tirox |
| BOTTOM BRACKET | Ceramic Speed SL, T47 BBright for 24mm spindle |
| HEADSET | FSA IS2 1-1/4, 45° x 45° / 1-1/2, 36° x 45° |
| FRONT THRU AXEL | Cervélo Aero Thru Axle Front, M12x1.5mm, 122mm length |
| REAR THRU AXEL | Cervélo Aero Thru Axle Rear, M12x1.0mm, 169mm length |
| FRONT WHEEL | Reserve 40TA GR, DT Swiss 350, 12x100mm, 24H, centerlock, tubeless compatible |
| REAR WHEEL | Reserve 44TA GR, DT Swiss 350,12x142mm, MS freehub, 24H, centerlock, tubeless compatible |
| TIRES | Vittoria Corsa Pro Control TLR G2.0 700x42c |
| SHIFTERS/BRAKE LEVER | Shimano GRX, RX825 |
| CRANKSET | Shimano GRX, RX825 |
| CHAINRING | Wolf Tooth Components Aero 48T Chainring for GRX |
| POWER METER | 4iiii Precision, GEN3+ Single Sided |
| CHAIN | Shimano M8100 |
| CASSETTE | Shimano XTR, M9200, 10-51T, 12-Speed |
| REAR DERAILLEUR | Shimano GRX, RX827 SGS |
| BRAKE ROTORS | Shimano CL800 Centerlock |
| ACCESSORIES | - Cervélo Front Computer/Accessory Mount 887 - Cervélo Rear Accessory Mount - Cervélo In-Frame Storage Rolls - Inner Tube Storage - Cervélo In-Frame Storage Rolls - Flat Kit Storage - Cervélo Smartpak Top Tube Storage Bag 400A - Arundel Mandible Water Bottle Cage, Matte UD Carbon finish (2 qty) |
| MAX TIRE WIDTH | 45mm |