Wilier Granturismo SLR Frameset
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Wilier Granturismo SLR Frameset
Wilier Granturismo SLR Frameset Info
Wilier Triestina has been building bicycles in Rossano Veneto, Italy since 1906. Over more than a century, the brand has moved across every segment of road cycling — from the cobbled spring classics to Grand Tour mountain stages to the time trial courses of the World Tour. The Wilier Granturismo SLR Frameset represents a different design brief than Wilier's race bikes: not outright speed at any cost, but the kind of all-day performance that endurance riders actually live in. Fast when you need it, forgiving when the road demands it, and composed across terrain and distances that would expose a pure race frame's limits.
The carbon construction is where that balance starts. Wilier built the Granturismo SLR around their HUS MOD+ compound — the same high-performance basis as the Filante line — but incorporated Crystal Liquid Polymer fiber into the carbon mesh. LCP is a specialized material that adds vertical elasticity to the layup without sacrificing torsional stiffness. In practical terms: the frame responds to power input with the rigidity you expect from a high-end race machine, while absorbing road vibration and micro-impacts in a way that pure stiffness-optimized carbon does not. The result is a frameset that feels alive under hard efforts and composed on long days over rough pavement. At 1,100 grams painted for a size M — including the Actiflex 2.0 system — it is not a lightweight outlier, but the weight is honest and the character it buys is real.
The Actiflex 2.0 is Wilier's most significant engineering contribution to the endurance category. It is a rear micro-suspension system that allows up to 5mm of vertical travel at the rear wheel, using a viscoelastic elastomer to absorb the frequency of vibration that fatigues riders on long efforts. The system comes in two elastomer versions — soft for XS, S, and M frames, hard for L, XL, and XXL — sized to match rider weight and load. Top-tier setups use a 3D-printed conformal lattice elastomer for finer tuning. The Actiflex 2.0 is repositioned compared to the previous version: it sits away from dirt and water ingress, locks down with a double-screw mechanism, and is accessible when you need to service or swap it. The elastomer redesign also trimmed about 20 grams from the previous system's weight. None of this is visible while riding. What you notice is that the bike doesn't beat you up.
The geometry is the third piece. Wilier gave the Granturismo SLR a slightly shorter top tube and higher stack than a traditional race bike — a reach and stack combination that puts riders in a more upright, sustainable position without creating the compromised handling of a stacked-up endurance platform. There are no spacers required to achieve a comfortable position; the geometry is designed to integrate directly. The frameset ships with the Z-Bar Integrated Carbon bar and stem — the same cable integration system Wilier uses on the Filante SLR — with all housing routed fully internally through the superthin headset bearing. This bearing is a proprietary Wilier design, not available through general parts channels, and supplied exclusively through authorized dealers. For riders who prefer a different bar shape, Wilier's easy-fit spacer system accommodates the Filante Bar, J Bar, and 0 Bar as alternatives.
Drivetrain compatibility is electronic only — no mechanical groupset provisions are made in the frame design. That is a statement about who this bike is for. The Granturismo SLR also supports 1x configurations: the front derailleur braze-on is designed to be removed and replaced with a flat plate, maintaining the clean frameset lines when running a single chainring. Tire clearance runs to 32mm actual width, giving meaningful room to run comfort-oriented rubber for long-distance and mixed-surface riding. Thru axles are 12x100 front and 12x142 rear, and both are included.
Design Benefits
- Crystal Liquid Polymer carbon layup: LCP fiber integrated into the HUS MOD+ carbon mesh adds vertical compliance without reducing torsional stiffness — a material-level solution to the endurance comfort problem that doesn't require geometric compromises.
- Actiflex 2.0 rear suspension: Up to 5mm of vertical travel at the rear axle, tuned by elastomer type to rider size. The redesigned system is lighter, better sealed against contamination, and available in 3D-printed conformal lattice elastomer for top-tier setups. Replaceable and separately available through Wilier dealers.
- Integrated cockpit with superthin bearing: Full internal cable routing through Wilier's proprietary headset bearing — the same system used on the Filante SLR race bike. No exposed housing, no external cable guides. Compatible with multiple bar shapes via easy-fit spacers.
- Endurance geometry without compromise: Higher stack and shorter top tube than a race frame, but calibrated to avoid the slack handling of a true comfort bike. The position integrates cleanly without requiring stem spacers, and it handles like a road bike rather than a touring rig.
- 1x-ready architecture: The front derailleur braze-on detaches and accepts a flat plate, giving riders a clean single-chainring setup without visual compromise. Electronic shifting only — the frame is built around the precision and cable-free simplicity of Di2 or eTap.
Final Take
The Granturismo SLR frameset is for riders who want a high-end Italian road bike that doesn't ask them to choose between performance and comfort. The Actiflex 2.0 and LCP carbon layup address the endurance problem at the engineering level, not by softening the frame's character but by adding targeted compliance where it matters most. If your rides are measured in hours and distance rather than just watts and segment times, this is where Wilier's century of frame-building experience is most directly aimed.
Wilier Granturismo SLR Frameset - Specifications
*Specifications are subject to change.
Wilier Granturismo SLR Frameset Geometry
