Affordable competition racers: Wilier Zero SL

Wilier Zero SL

The model Zero is in the Wilier programme the bike for tough mountain stages. With the Zero SL there is also a less cost-intensive analogue to the SLR, which Astana pros ride. Our test bike is the cheapest entry-level bike available for 900 Euro was upgraded with a carbon wheelset from the kit for an additional charge. The moderate aero result of both variants is hardly surprising.

Surprisingly, however, the inexpensive frameset of the Wilier Zero SL is no heavier than the expensive one, and the frame shape and geometry are copied one-to-one. The difference in quality between the versions only becomes apparent on the TOUR test standswhich attest to the significantly weaker stiffness values of the affordable model. This is of little relevance for light mountain bikers, but riders over 75kg may be bothered by the somewhat imprecise feedback in fast corners. Sprinters with strong acceleration might also prefer a more stable frameset.

More models in the test:

• Canyon Aeroad CF SL 8 vs. Canyon Aeroad CFR Disc MVDP
• Giant TCR Advanced 1 vs. Giant TCR Advanced SL
• Lapierre Xelius SL 6.0 vs. Lapierre Xelius SL 75TH
• Merida Scultura 7000 vs. Merida Scultura Team
• Specialised Tarmac SL 7 Comp vs. Specialised S-Works Tarmac SL7
• What distinguishes expensive professional racing bikes from inexpensive models

For those who attach little importance to this, the Wilier Zero SL with an acceptable total weight of a good 8 kiloswhich is only undercut by the outstanding Canyon among the more affordable bikes. There is still potential in the bike: the wheels are heavy for carbon models, and the tyres could easily be improved. 100 grammes save. Their high rolling resistance accounts for a relevant part of the differences in our simulation. Good ride comfortA flattened handlebar at the top and the well-sprung seatpost feel higher quality and more comfortable than most of the competition.

Facts about the Wilier Zero SL

• Price 5400 Euro >> available here
• Weight 8.1 kilos
• Aerodynamics 237 Watt****
• Info www.wilier.com

Frame sizes** XS, S, M, L, XL, XXL

Seat/top tube/head tube 520/555/154 millimetres

Stack/Reach/STR*** 578/380 millimetres/1.52

Wheelbase/caster 995/53 millimetres

Weight frame/fork/steering bearing* 937/372/61 grammes

Drive/gear shift Shimano Ultegra (2x11, 50/34, 11-30 t.)

Brakes Shimano Ultegra (160/140 mm)

Wheels/tyres (weights)***** Miche NDR 38/Vittoria Rubino 28 mm (f./h. 1,431/1,845 grams)

The expensive model: Wilier Zero SLR

To the presentation 2020 counted the Zero SLR to the lightest disc racing bikes ever. In the meantime, some competitors have joined the ranks, but the competitiveWilier's top model among the mountain specialists. At least in comparison with similarly light bikes, the weak aerodynamics are not a disadvantage. The no-frills frame can also be ordered in the Astana livery shown here (in the picture Miguel Ángel López), which, however, makes it even more attractive. 800 Euro surcharge costs.

Facts about the Wilier Zero SLR

• Price 11300 Euro
• Weight 6.7 kilos
• Aerodynamics 230 Watt****
• Info www.wilier.com

Weight frame/fork/steering bearing* 943/382/91 grammes

Drive/gear shift Shimano Dura-Ace Di2 (2x12, 52/36, 11-30 t.)

Brakes Shimano Dura-Ace Disc (160/140 mm)

Wheels/tyres (weights)***** Corima 47 WS/Vittoria Corsa Speed 25 mm (f./h. 1,086/1,468 grams)

*Weighed weights.

**Manufacturer information, test size bold.

***Stack/Reach projected vertical/horizontal measurement from the centre of the bottom bracket to the top of the head tube; STR (Stack to Reach): 1.36 means a very stretched, 1.60 a very upright riding position.

****Aerodynamics Theoretical pedalling power required to overcome air resistance at 45 km/h, measured in a wind tunnel with a pedalling leg dummy.

*****Impeller weights including tyres, cassette, quick release/threaded axles and brake discs if necessary.