Bianchi Specialissima RC Review: A Lightweight Aero Racer Built for Steep Gradients

Introduction

The Bianchi Specialissima RC is a lightweight aero road racer with a build weight of roughly 7 kg and a price of £10,999. It lands in the most competitive corner of the road market, where names like the Canyon Ultimate, Factor O2, Giant TCR, Scott Addict, Pinarello Dogma and Specialized Tarmac SL8 all fight for the same rider. Standing out there takes more than a badge, and the Specialissima RC earns its place mostly through the way it rides rather than the way it looks.

Climbing is the headline. The frame is stiff enough to reward punchy, out-of-the-saddle efforts, and the bike carries speed efficiently once the gradient steepens into double digits. Descending is equally assured, with calm and predictable steering that builds confidence quickly. The trade-offs are subtler: flat-road speed is strong but not exceptional, and the design language is polarising in a way that matters when a bike costs this much.

This review looks at where the Specialissima RC genuinely excels, where it asks for compromise, and which riders will get the most from it.

Who this product is for

This is a bike for riders who measure a good ride in elevation gain. It suits anyone who spends most of their time on rolling terrain and longer climbs, and who wants a machine that feels quick on shallow gradients and genuinely fast once the road tilts upward.

It also suits riders who are comfortable with a long and low race position. The geometry is aggressive, sitting longer and lower than the equivalent Specialized Tarmac SL8, which opens the door to an uncompromising aerodynamic posture for those who can hold it.

Finally, it makes sense for confident descenders. The steering is purposeful rather than nervous, and the composure at speed is one of the bike’s strongest attributes, whether you are already fast downhill or working on getting there.

Main strengths

On shallow gradients the Specialissima RC feels quick, but it is on steep climbs that it really comes alive. The stiffness of the frame gives punchy efforts a willing, can-do character, and the bike glides uphill with an efficiency that feels comparable to a dedicated climbing bike, which is notable given that this is an all-rounder.

Flat-road performance is solid rather than spectacular. Steady pace is easy to hold, and a solo speed of around 30 km/h is maintainable, with the bike happy to surge forward during sustained tempo efforts. Riders used to deeper wheels may notice that similar lightweight aero bikes with more rim depth feel slightly more efficient in a crosswind, where wheel depth can act a little like a sail. The 50 mm wheels from Bianchi’s Ultr RC are not offered as an option here, so that particular upgrade path is closed.

Handling is a genuine highlight. The 988 mm wheelbase, carried over from the previous model, is longer than the Tarmac SL8’s 978 mm in the equivalent size, and that extra length shows up as stability rather than sluggishness. High-speed descents feel calm and deliberate, and the bike turns into an apex with a predictability that encourages you to push on when conditions are dry.

Comfort is well judged for a race bike. The rear end provides plenty of compliance and the handlebar does a good job of isolating the rider from road buzz, though larger cracks and heavily worn chip-sealed surfaces still come through. Fitting tubeless tires in 30 mm or 32 mm would likely improve comfort further, with 32 mm being the widest the frame accepts.

The Shimano Dura-Ace Di2 12-speed groupset is a strong match. Braking is dependable and predictable, the system runs quietly when you come off the brakes, and the 52/36 chainset paired with an 11-30 cassette gives spinnable gears for climbs alongside faster ratios for the flat. The integrated power meter produced consistent, believable numbers throughout testing.

Things to consider before buying

The biggest question mark is the design. The tube shapes and the overhanging head tube divide opinion, and the matte paint finish paired with gloss wheels is an unusual combination. Instead of the usual brand name on the down tube, the frame carries the Reparto Corse racing department name, which reads as a deliberate statement rather than a conventional badge.

Stock tires are another consideration. The bike comes with 26 mm Pirelli TT rubber, which is fast but narrow by current standards and leaves comfort and mixed-condition grip on the table. Swapping to a tubeless 28 mm tire, such as a Continental GP 5000 S TR, would allow lower pressures for more comfort and a compound that feels more secure in variable weather.

On flatter roads, the bike does not feel notably quicker than a lightweight non-aero climbing bike, which is worth knowing if your riding is mostly pan-flat and fast. Deeper wheels would likely change that, but as noted, they are not a factory option on this model.

At £10,999, expectations are naturally high, and the looks form a large part of whether a bike makes you want to ride it. That is a personal call rather than a performance one, but it is a real factor at this price.

Buying advice

If the ride quality is what draws you in, there is very little to fix mechanically. The most useful change is tire-related: moving to a tubeless 28 mm setup, or wider if your roads are rough, delivers lower pressures, better comfort and more confidence in mixed conditions without touching the bike’s speed.

Cockpit fit is worth sorting at the point of purchase. Bar width is configurable when you buy the bike, and a range of options is available, including a 120 mm stem paired with a 38 cm bar. That is good news for riders chasing an aero position, because optimising body position saves more than efficient tube shapes ever will.

The groupset needs no changes. Dura-Ace Di2 delivers dependable braking, quiet running and a gear range that covers both climbing and fast flat roads, and the power meter readings have been consistent. Component swaps beyond tires and cockpit sizing offer limited returns.

The remaining decision is aesthetic. If you read the angular tube profiles as purposeful and modern, this is one of the best lightweight aero bikes available. If the flowing lines of more traditional race frames are what you want to look at on a long Sunday ride, that preference is legitimate and worth respecting before you spend the money.

Conclusion

The Bianchi Specialissima RC is an excellent bike to ride uphill and down. There is stiffness for out-of-the-saddle efforts, the geometry produces assured handling, and the build is close to faultless straight out of the box, with a Dura-Ace Di2 groupset that needs nothing added.

Its weaknesses are narrow and specific. Flat-road efficiency is good but not class-leading without deeper wheels, the stock 26 mm tires hold back comfort, and the styling will not appeal to everyone. None of those are performance failures, but together they explain why this bike will be an easy recommendation for some riders and an easy pass for others.

If you want a lightweight aero racer that feels at home on steep gradients, descends with composure and rewards confident riding, the Specialissima RC delivers. Just make sure you like looking at it as much as you like riding it.