Wilier Granturismo SL

About the Wilier Granturismo SL

The 2025 Wilier Granturismo SL sits in that sweet spot where race-bike responsiveness meets all-day comfort, and it does so without the usual compromises. Wilier's endurance platform has always leaned towards the spirited end of the comfort spectrum, and this latest iteration sharpens that focus. You're looking at a carbon monocoque frame that weighs 1210 grams painted, built around the brand's Actiflex 2.0 micro-suspension system - a neat elastomer-damped setup that delivers up to five millimetres of vertical travel at the rear end. It's not suspension in the mountain-bike sense; think of it as a high-frequency vibration filter that keeps your legs fresher when the road surface turns to chipseal or patched tarmac.

What sets the Granturismo SL apart is its willingness to venture beyond smooth asphalt. Clearance for 38-millimetre rubber means you can fit proper all-road tyres and explore bridleways, canal paths, or the kind of neglected back lanes that make sportive routes interesting. The frame's fully integrated cable routing - threaded through a custom superthin bearing at the head tube - keeps the front end sleek and rattle-free, while the UDH dropout future-proofs your drivetrain choices. Wilier positions this as the accessible sibling to the flagship SLR, bringing much of that bike's performance DNA to riders who want speed and comfort in equal measure, without chasing the last hundred grams or the highest-tier groupset.

You'll find the Granturismo SL specced with electronic shifting only - Shimano Ultegra Di2 or 105 Di2 in two-by-twelve configurations - and hydraulic disc brakes as standard. The geometry is endurance-focused but not sluggish: head angles sit around 71 to 72.5 degrees depending on size, and the reach figures are generous enough to stretch you out without pinning you into an aggressive tuck. It's a bike that encourages you to ride longer and harder, whether that's a hilly audax, a fast club run, or a weekend loop that mixes tarmac with the occasional gravel detour.

Wilier Granturismo SL geometry

The numbers here translate to a riding position that's upright enough for comfort but forward enough to keep you engaged. Stack heights climb steadily across the size range - 527 millimetres on the XS, rising to 625 on the XXL - so taller riders won't feel cramped, and shorter riders won't be reaching for the bars. Reach grows more conservatively, from 369 millimetres to 395, which keeps the cockpit proportional and avoids that stretched-out, nose-over-the-front-wheel sensation you get on some race bikes.

Head angles start at 71 degrees on the smallest frame and steepen to 72.5 on the larger sizes, giving you stable, predictable steering that doesn't wander when you're descending fast or threading through traffic. The seat tube angle relaxes slightly as you go up the sizes - 74.5 degrees on the XS, down to 72.5 on the XXL - which keeps your weight centred over the bottom bracket and maintains efficient pedalling posture regardless of your height. Chainstays are short by endurance standards, sitting at 409 to 414 millimetres, and that brevity brings a touch of nimbleness to the handling; you can flick the bike through tight corners or accelerate out of junctions without feeling like you're steering a barge.

Wheelbase figures range from 977 millimetres to 1027, and that spread gives the bike a planted, confidence-inspiring feel at speed while still allowing quick direction changes when you need them. The 72-millimetre bottom-bracket drop is typical for a road bike, offering a low centre of gravity for stability without sacrificing cornering clearance. When you're riding, this geometry manifests as a bike that holds its line through sweeping bends, climbs without fuss, and descends with the kind of poise that lets you relax your grip and enjoy the view.

Component choices & upgrades

The stock build on the Granturismo SL is already well sorted. Shimano's Ultegra Di2 R8100 groupset - or the 105 Di2 R7170 on more accessible builds - delivers crisp, reliable shifting and powerful hydraulic braking, and there's little reason to change it unless you're chasing marginal gains or have specific preferences. The 50-34 compact crankset paired with an 11-30 or 11-34 cassette gives you a wide enough range for steep climbs and fast flats, and the electronic shifting means you can trim gears under load without worrying about cable stretch or indexing drift.

If you're planning to spend serious time on rougher roads or light gravel, consider swapping the stock 28-millimetre tyres for something wider - 32 or even 35 millimetres will fit comfortably within the 38-millimetre clearance and transform the bike's compliance and grip on loose surfaces. The Miche SWR Evo or Vision Trimax wheels that typically come fitted are solid all-rounders, but if you're chasing lower weight or better aerodynamics, a set of carbon hoops with a 25-millimetre internal width will sharpen acceleration and improve crosswind stability without compromising the ride quality.

The integrated carbon cockpit - Wilier's Z-Bar or a Deda Zero 2 setup - looks clean and works well, but if you prefer a different bar shape or stem length, you'll need to factor in the cost and complexity of replacing an integrated system. The Prologo Dimension or Selle San Marco saddle is comfortable for most riders, though saddle fit is personal; if you're planning long days, it's worth experimenting to find what suits your sit bones. The Actiflex 2.0 elastomer comes in hard or soft options, and if you find the rear end too firm or too soft for your weight and riding style, swapping the elastomer is a simple tweak that can fine-tune the compliance to your preference.

Where the Wilier Granturismo SL excels

This bike is outstanding at long-distance road riding where comfort and speed matter equally. Sportives, audax events, multi-day tours on tarmac, fast club runs that stretch into the afternoon - these are the Granturismo SL's natural habitat. The Actiflex 2.0 system and endurance geometry mean you'll arrive at the café stop or the finish line fresher than you would on a pure race bike, and the lightweight frame ensures you're not sacrificing speed or responsiveness to get that comfort.

It also handles mixed-surface riding with confidence. The 38-millimetre tyre clearance and stable geometry make it a capable all-road machine for bridleways, canal towpaths, and the kind of rough lanes that link quiet villages. You won't want to tackle technical singletrack or deep gravel, but for riders who spend most of their time on tarmac and occasionally detour onto dirt, the Granturismo SL offers genuine versatility without feeling compromised on either surface.

Where it's not ideal is utility cycling or true bikepacking. The lack of mudguard and rack mounts means winter commuting or loaded touring will require creative solutions - clip-on guards and a saddlebag setup at best. If you need a bike that doubles as a year-round workhorse or a self-supported adventure rig, you'll want something with proper mounting points. Similarly, if you're after the absolute lightest, stiffest race bike for crits or time trials, the Granturismo SL's comfort-focused design will feel like a compromise; it's quick, but it's not a pure speed machine.

Wilier Granturismo SL FAQs

What is the tyre clearance on a Wilier Granturismo SL?
The frame and fork accommodate tyres up to 38 millimetres wide, which gives you plenty of room for all-road rubber or wider road tyres for improved comfort and grip. That clearance opens up light gravel routes and rougher tarmac without worrying about mud or debris clogging the frame.

How does the Actiflex 2.0 system work on the Wilier Granturismo SL?
Actiflex 2.0 is a micro-suspension system integrated into the rear triangle, using an elastomer damper to absorb high-frequency vibrations and small impacts. It provides up to five millimetres of vertical travel, which smooths out rough roads without noticeably affecting pedalling efficiency. You can choose between hard or soft elastomer inserts to tune the compliance to your weight and riding style.

Is the Wilier Granturismo SL good for gravel riding?
It handles light gravel and mixed-surface routes confidently, thanks to the 38-millimetre tyre clearance and stable endurance geometry. You can fit proper all-road tyres and explore bridleways or unpaved lanes, but it's not a dedicated gravel bike - technical terrain or deep loose surfaces will push it beyond its comfort zone.

What is the weight of a Wilier Granturismo SL?
The painted frame weighs 1210 grams in a size medium. Complete bike weight varies depending on the build, but expect around 7.5 to 8.1 kilograms for a full Ultegra Di2 or 105 Di2 setup with mid-range wheels.

What groupsets are compatible with the Wilier Granturismo SL?
The frame is designed for electronic shifting and comes specced with Shimano Ultegra Di2 R8100 or 105 Di2 R7170 in two-by-twelve configurations. The UDH dropout means it's also compatible with modern SRAM T-Type drivetrains, so you could fit SRAM Force or Rival eTap AXS if you prefer wireless shifting.

Does the Wilier Granturismo SL have mounts for mudguards?
No, the frame lacks mudguard and rack mounts, which limits its utility for winter commuting or loaded touring. You can fit clip-on guards if you need weather protection, but they're not as secure or effective as full mudguards mounted to proper eyelets.

What is the difference between the Wilier Granturismo SL and SLR?
The SLR is the higher-tier model, featuring a lighter frame (1100 grams versus 1210 for the SL) and often specced with more premium components like SRAM Force eTap AXS or higher-end Shimano groupsets. The SLR also uses a more advanced carbon layup with Liquid Crystal Polymer reinforcement, which increases stiffness and reduces weight. Both bikes share the Actiflex 2.0 system and endurance geometry, but the SLR is aimed at riders chasing the last performance gains.

Is the Wilier Granturismo SL suitable for long-distance cycling?
Absolutely. The combination of endurance geometry, Actiflex 2.0 compliance, and generous tyre clearance makes it an excellent choice for sportives, audax events, or multi-day tours on tarmac. The lightweight frame and efficient power transfer mean you're not sacrificing speed for comfort, and the hydraulic disc brakes give you confident control on long descents.