Wilier Filante SL 105 Di2 Bike Info

The Wilier Filante SL 105 Di2 Bike is the Italian brand's answer to a straightforward question: how close can you get to a WorldTour aero race bike without paying WorldTour prices? Closer than you'd expect. The Filante SL shares its geometry, frame shaping, and aerodynamic architecture with the Filante SLR — the bike raced by professional teams at the sport's highest level — with one deliberate modification. Wilier's engineers changed the carbon lamination to use an NHU MOD+ high impact strength compound in place of the SLR's higher-grade carbon. The result is a frame that's just under 150 grams heavier than the SLR in the same size — a painted size M weighs 1,010 grams — with a ride character that's slightly more compliant and forgiving over long days in the saddle.

That 150-gram difference is the SL's entire story, and it's a compelling one. Everything else traces directly back to the SLR. The seatpost, spacers, top cover, dropout, and all metal components are identical to the WorldTour machine. The geometry is the same. The aerodynamic tube shaping, the dropped seatstay design, the deep-section headtube — all of it transfers over. If you've ever wondered what it would feel like to ride the same geometry as the professionals, the Filante SL is the most direct answer available without the corresponding price tag.

The cable integration is complete. Wilier routes all cables fully through the Z-Bar integrated carbon cockpit and into the frame via a proprietary superthin bearing at the headset — a component designed and owned by Wilier Triestina, not sourced from the open market, and available only through authorized dealers. The visual result is a clean, uncluttered front end with no external cable housing. Nothing disrupts airflow where it matters most. The Filante SL is an electronic-only, disc-only platform with no mechanical or rim brake variants; Wilier designed this bike around a single performance philosophy and didn't hedge.

Shimano's 105 Di2 groupset handles shifting throughout. The R7150 front and rear derailleurs paired with R7170 hydraulic disc brake levers deliver precise, instantaneous gear changes and confident braking at any speed. The 12-speed 11-34 cassette pairs with a 50/34 compact crankset, covering a range that suits punchy group ride efforts and longer sportive days equally well. The 105 Di2 system shares Shimano's Di2 architecture with Dura-Ace and Ultegra — the same core technology at a lower cost of entry, and it shows in daily use.

Miche SWR EVO 50mm wheels come stock front and rear. At 50mm depth, these rims deliver meaningful aerodynamic benefit on flat to rolling terrain while remaining manageable when the wind picks up. Vittoria Rubino IV tires in 700x28 complete the rolling package. The frame accepts up to 30mm actual tire width if you want to go slightly wider for added comfort or compliance on rougher roads.

The Filante SL is available in five colorways — Black Glossy, Blue White Glossy, Red Glossy, Silver/Black Glossy, and White Red Glossy — across six sizes from XS to XXL. That size range is notably broad and covers a wider span of riders than most competitors in this category.

Design Benefits

WorldTour geometry carried over directly — the Filante SL is dimensionally identical to the Filante SLR raced by professionals
Shared SLR hardware — seatpost, dropout, spacers, and top cover are the same components used on the pro-spec machine
~150g frame weight difference vs. SLR — NHU MOD+ carbon adds marginal weight while delivering more compliance and real-world durability
Proprietary Wilier superthin bearing — enables full cable integration through the headset with zero external routing; no standard market equivalent
Shimano 105 Di2 12-speed electronic shifting — same Di2 architecture as Dura-Ace, accessible price point
Miche SWR EVO 50mm wheels stock — aero depth built into the base build without requiring an upgrade
Electronic and disc-only platform — designed without compromise around a single performance direction; no mechanical variant exists

Final Take

The Wilier Filante SL 105 Di2 occupies a specific and well-defined position: it's the aero race bike for riders who want WorldTour geometry and WorldTour integration without the WorldTour budget. At $7,300, it arrives with 50mm aero wheels, full cable integration, electronic shifting, and hydraulic disc brakes on a frame that shares virtually every design detail with a bike raced at the highest level of the sport. The NHU MOD+ carbon makes it more livable day-to-day than the SLR without changing what the bike fundamentally is. If you want to know what it feels like to ride the same shape as the professionals, this is where you start.

Wilier Filante SL 105 Di2 Bike - Specifications

Frame Material:

Carbon Monocoque NHU MOD+ High Impact Strength

Fork:

Carbon Monocoque NHU MOD+ High Impact Strength

Headset:

Wilier Custom Bearings Superslim

Seatpost:

Filante Carbon Custom -15mm

Front Derailleur:

Shimano 105 Di2 R7150

Rear Derailleur:

Shimano 105 Di2 R7150

Crankset:

Shimano 105 R7100

Chainrings:

50/34

Bottom Bracket:

Miche Pressfit 86.5x41

Brake Calipers:

Shimano 105 R7170 Hydraulic Disc

Rotors:

Shimano RT70 160mm (Front), 140mm (Rear)

Shifters / Levers:

Shimano 105 Di2 R7170

Cassette:

Shimano 105 R7100 12-speed 11-34

Chain:

Shimano M7100 12-speed

Wheel - Front:

Miche SWR EVO 50

Wheel - Rear:

Miche SWR EVO 50

Stem:

Z-Bar Integrated Carbon

Handlebar:

Z-Bar Integrated Carbon

Saddle:

Selle San Marco Shortfit Start-Up

Tires:

Vittoria Rubino IV G2.0 700x28

Pedals:

Not Included

*Specifications are subject to change.

Wilier Filante SL 105 Di2 Bike Geometry

Size:

XS

S

M

L

XL

XXL

B. Seat Tube (c-t)

450

480

500

520

540

560

C. Top Tube Length

515

530

543

556

570

583

D. Head Tube Length

104

119

135

154

166

181

E. Chain Stay Length

407

408

410

411

G. Seat Tube Angle

75.2

74.5

74

73.5

73

72.5

H. Head Tube Angle

70.8

72

72.5

73

73.5

J. Wheel Size

700c

K. Stack

505

521

538

555

571

587

L. Reach

380

384

388

391

395

399

The RA Perspective

The Filante SL is one of those bikes that rewards patience when you're explaining it to a customer. On paper, "it's almost the same as the WorldTour bike" sounds like marketing copy, but in this case it's literally true — the geometry, the seatpost, the dropout, the proprietary headset bearing design, all of it. We've walked a number of customers through the SLR vs. SL comparison and the question always comes back to: can you actually feel 150 grams in a carbon frame? The honest answer is no, not directly. What you can feel is the ride quality shift — the SL is a touch more forgiving than the SLR, which turns out to be an advantage for most riders who aren't racing Liège–Bastogne–Liège.

The cable integration is what tends to surprise people in person. The Z-Bar cockpit feeds everything through that proprietary superthin bearing at the headset — Wilier's own design, not something you can find on the shelf anywhere else. The front end is completely clean. When you put this bike next to something at a similar price point with standard cable routing, the difference in how finished it looks is immediately obvious.

The 105 Di2 groupset is the right call at this price. We've said it before: the Di2 architecture is the same whether you're running Dura-Ace or 105. The shifting is fast, reliable, and fully electronic. At $7,300 with Miche 50mm wheels already on the bike, the total package here is genuinely strong value for what you're getting.

We'd point this at riders looking to step up from an endurance-oriented bike, or anyone who wants an aero race machine they can ride four or five days a week without feeling punished. The SL's slightly more compliant carbon gives it real-world versatility that the SLR simply doesn't have.

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