Sidi RR Fast 2 Aerolight

42
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Only 2 pieces in stock
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Size5

Product details

The RR Fast 2 Aerolight from Sidi is a highly developed cycling shoe designed for demanding cyclists. With its proven durability and excellent grip, it offers both comfort and performance on the road bike. The innovative sole combines nylon and carbon fibers to ensure an optimal balance of stiffness and flexibility, reflected in a stiffness index of 5. The shoe perfectly adapts to the shape of the foot thanks to its soft upper material, providing an outstanding wearing experience. The adaptive closure allows for quick and precise adjustments, while the hidden heel stabilization keeps the foot secure throughout the ride. Sidi focuses on longevity by using only the best materials and ensuring that all parts are replaceable, allowing the shoe to be used for years.

Maximum aerodynamics for efficient rides
Optimal balance of stiffness and flexibility
Precise, micrometric closure for easy adjustment
Soft upper material for high wearing comfort
Hidden heel stabilization for secure hold.

Key specifications

Exact colour description
Cement greycement-ice whiteGreyGrey-WhiteWhite
Target group
MenWomen
Bike area of use
Racing bikes
Closure cycling shoes
Screw cap

General information

Item number
62021537
Manufacturer
Sidi
Category
Cycling shoes
Manufacturer No.
474-012-4002-809-42
Release date
11.9.2025

Colour

Colour
GreyWhite
Exact colour description
Cement greycement-ice whiteGreyGrey-WhiteWhite

Material

Upper
Synthetic
Material
Carbon fibresNylonPolitex
Sole material
CarbonNylon

Target group

Target group
MenWomen
Age group
Adults

Shoe properties

Shoe size (EU)
42
Bike area of use
Racing bikes
Closure cycling shoes
Screw cap
Fabric properties
BreathableHardwearingLightweight
Fit
Regular fit
Membrane
Shoe without membrane
Sole hardness
medium / soft
Season
Summer

Origin

Country of origin
FranceItaly

Voluntary climate contribution

CO₂ emissions
7.5 kg
Climate contribution
CHF 0.18

Package dimensions

Length
32.50 cm
Width
22.50 cm
Height
11 cm
Weight
771 g

30-day right of return and free return shipment
24 Months Warranty (Bring-in)
4 additional offers

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Cycling shoes» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 5.Ride Concepts
    0.4 %
  • 8.Fizik
    0.5 %
  • 8.Sidi
    0.5 %
  • 10.Crankbrothers
    0.7 %
  • 11.Lake
    0.8 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 3.Fox
    4 days
  • 4.Crankbrothers
    5 days
  • 5.Sidi
    6 days
  • 6.Suplest
    8 days
  • 7.Northwave
    10 days

Return rate

How often is a product of this brand in the «Cycling shoes» category returned?

Source: Digitec Galaxus
  • 14.Van rysel
    39.1 %
  • 15.Trek
    40.1 %
  • 16.Fizik
    40.5 %
  • 17.Sidi
    44.7 %
  • 18.Suplest
    45.1 %
Source: Digitec Galaxus