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The fastest version of yourself

The Filante SLR ID2 is Wilier's most advanced aerodynamic racing bike.

Developed with the Groupama-FDJ United Cycling Team, every detail is engineered around the rider. This is how we execute speed.

Lightweight, responsive, and precisely aerodynamic, the Filante SLR ID2 puts you at the center of performance. Aerodynamics serve the rider, delivering maximum efficiency, comfort, and control across every condition.

Speed and innovation, precision-engineered in Italy. Engineered for the WorldTour, and built for you.

Video cover

Integrated innovation: the Aerokit system

The down tube is one of the most aerodynamically complex areas of any frame. We engineered it with a single objective: minimize drag and reduce bottle exposure to airflow.

The Aerokit system was developed by our Innovation Lab in partnership with Elite Cycling, a global leader in hydration systems for competitive cycling. The result: 1,100ml of total capacity, optimally distributed with minimal aerodynamic impact.

Functionally, the Aerokit operates as a spoiler — stabilizing airflow and reducing turbulence around the frame. Aerodynamic drag is cut by over two-thirds compared to traditional systems.

The Aerokit also accepts standard round bottles: 550ml on the down tube, up to 750ml on the seat tube. Traditional bottle cage compatibility is built in.

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Filante SLR: The evolution from the first to the second generation

Compare

FILANTE SLR ID1

FILANTE SLR ID2

DELTA

FRAME WEIGHT
BLACK PAINTED, SIZE M

860 G

860 G

=

BB STIFFNESS

187 Nm / °

201 Nm / °

+7.49%

C*dA AT 50 Km/h at 0°
BIKE ONLY

0.1016 m2

0.0883 m2

-13.1%

C*dA AT 50 Km/h at 0°
BIKE + RIDER

0.3465 m2

0.3284 m2

-5.22%

C*dA AT 50 Km/h at 15°
BIKE + RIDER

0.3753 m2

0.3564 m2

-5.04%

WATT AT 40 KM/H

287.95 W

273.8 W

-4.91%

70 KM at 290 W

1:45:00

1:43:15

-1:45

A new aero benchmark on the market

Tested in the legendary Silverstone wind tunnel. The results exceeded the brief.

A 13.6% reduction in drag, surpassing the 12% projected by CFD simulations. Measured across the complete bike-rider system, aerodynamic resistance improves by 4.5%.

Compared to the Filante SLR ID1, the numbers are significant: at 40 km/h, the ID2 saves 14.15 watts. Apply 290W over 70 km and you gain 1 minute and 45 seconds. In a competitive environment, that margin decides races.

Tested head-to-head against five top-of-the-range WorldTour bikes, the Filante SLR ID2 delivers an average aerodynamic resistance coefficient 2.42% better than the competition.

At race speeds, that's not marginal. That makes all the difference.

F-Bar ID2: Aerodynamic cockpit engineered for control

The F-Bar ID2 is a cockpit engineered around the demands of the modern rider. It was developed with Wilier's Innovation Lab and the athletes of the Groupama-FDJ United Cycling Team.

Every detail targets efficiency and control across all riding conditions. The O.E.F. (Optimized Ergonomic Flare) design delivers a 3 cm orthogonal flare between high and low grip positions, available in 35/38 cm, 37/40 cm, and 39/42 cm. Unlike conventional differentiated-width handlebars, O.E.F. maintains consistent control ergonomics throughout, locking you into a natural, tucked position that compounds the bike's aerodynamic advantage.

For the first time on a Wilier cockpit, all clamping hardware is fully integrated and hidden. The result is cleaner aerodynamics, better protection against dirt and sweat, and full UCI compliance.

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The fork: Aerodynamic efficiency, down to the details

The fork was developed through systematic analysis of NACA airfoils, aerodynamic profiles derived from aeronautics and mathematically defined to optimize airflow efficiency. Each airfoil was tested in combination with the wheel and tyre via CFD simulation, evaluated across multiple wind incidence angles to replicate real-world riding conditions. 

The result: fork legs that combine an external NACA airfoil profile with a flat inner surface. This minimizes drag without compromising structural integrity.

The fork crown cone is more pronounced than on the Filante SLR, delivering increased torsional stiffness and greater stress resistance under load.

An integrated aerodynamic fin runs along the left fork leg, skimming the disc and encasing the brake caliper. First refined on the Supersonica SLR, the partial fairing is now engineered to a higher standard.

The thru axle clamping bushing is fully encased within the right fork leg. This is a first for Wilier, offering a cleaner silhouette and reduced drag.

The seatpost: Lightweight and efficient

Built on development data from the Supersonica SLR, the formula was already proven: optimized weight, stiffness, and comfort in a single component.

The Filante SLR ID2 seatpost carries that engineering forward. A slender, precise profile minimizes aerodynamic drag without sacrificing stiffness or vertical vibration absorption.

Available standard with 0 offset, with a 15mm setback on request.

Enhanced integration of the Shimano Di2 battery

Relocating the Shimano Di2 battery to the bottom bracket area was a performance decision. It delivered immediate, measurable advantages.

Accessibility: The battery is enclosed in a resin casing and secured with two screws. Check it or replace it in seconds. No seatpost removal or saddle height adjustment required.

Lower Center of Gravity: The repositioned battery drops the bike's center of mass, working in sync with the lowered Aerokit. The result is a more stable, precise, and responsive ride at high speeds.

The rear triangle: Evolved in every detail

The wide rear stays, joining the seat tube with a broken line, are carried forward from the Filante SLR ID1. The silhouette is deliberate: this is a frame that communicates intent from every angle.

What's changed is everything underneath. Dynamic analysis of the interaction between the stays and leg movement during pedaling drove a counter-intuitive decision: inclining the stays inward by 2.5°. The data pointed there, so we followed it.

The rear triangle is also slightly lengthened — enabling cleaner integration of the new drivetrain with UDH dropouts, increased tire clearance up to 34mm, and improved stability at speed.

Front tire clearance

The Filante SLR ID2 is engineered to perform across a wide range of conditions. Tire clearance up to 34mm gives you the flexibility to select the right tire for the terrain without sacrificing aerodynamic efficiency.

The removable derailleur mount enables single chainring configuration, supporting up to 55 teeth. Less weight. Cleaner lines. More performance where it counts.

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Weight and materials: Engineered for speed

An aero frame starts with a precise equation: aerodynamics, stiffness, and responsiveness in exact proportion. The objective isn't minimum weight. It's maximum efficiency at speed, with stable and precise handling across all riding conditions, while enabling builds that clear UCI weight limits.

Material selection is where the equation gets solved. The Filante SLR ID2 is built with high-performance composites developed in collaboration with Toray, a global leader in carbon fiber production.

Three fiber types, T800, T1100, and M46JB, are combined in the monocoque lamination, each selected to optimize the balance of responsiveness, stiffness, and weight. Total build weight: 7.1 kg in Dura-Ace Di2 specification.

Geometries and fitting

Direct collaboration with the Groupama-FDJ United Cycling Team drove the refinement of every detail on the Filante SLR ID2. Our objective was to refine a fitting system precise enough to be truly individualized.

The AccuFit system maintains geometric consistency and fitting accuracy across every frame size — delivering a balanced, high-performance riding position regardless of height or riding style.

The numbers: 6 frame sizes, 7 handlebar width combinations, 5 stem sizes, and 2 seatpost versions. That's 420 distinct configurations, each separated by just 2mm. The result is a riding position engineered to your exact dimensions, with no compromises.

Whitepaper

Read the Filante SLR ID2 white paper. Engineering breakdown. Wind tunnel data. The aerodynamic solutions that make it Wilier's fastest frame to date.

Geometries

  XS S M L XL XXL
C/C (cm) 44.5 47.5 50.5 52.5 54.5 56.5
L (cm) 50.8 52.6 54.2 55.9 57.6 59
H (cm) 45 48 51 53 55 57
A (°) 75.2 74.5 74 73.5 73 73
L1 (cm) 41.1 41.1 41.1 41.1 41.3 41.3
H1 (cm) 9.9 11.5 13.2 14.9 16.6 18.3
A1 (°) 70.6 71.5 72 72.5 73 73.5
Reach (mm) 373.5 380 386.5 393 400 408
Stack (mm) 505 523 541 559 577 595
Wheelbase (mm) 980.5 985.1 992.9 1000.4 1010.1 1018.5

Setup & Prices

Code

Drivetrain Model

Wheelset

MSRP (USD)

The prices, specifications and photos shown in this catalog are not subject to any contractual obligation and may change during the season.

Support

FAQ

What is the maximum tire clearance of the Filante SLR ID2?

Answer

What type of stem/handlebar can I install on the Filante SLR ID2?

Answer

Do the integrated cables run inside the handlebar?

Answer

Is the Superfine™ bearing available as a spare part?

Answer

Does the Filante SLR ID2 use a dedicated seatpost?

Answer

How can I clean the Filante SLR ID2?

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What frame protections are included as standard?

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