Avalanche Cascais Bike Store is a bicycle retailer and service workshop based in Cascais, Portugal, serving cyclists since 1994. The store describes itself as a specialist in all types of bicycles and offers an authorised workshop for Bosch, Shimano and Fazua systems, helping customers resolve bicycle problems and access professional repair services.

Its range includes bicycles, components, cycling equipment and nutrition, with an outlet selection also available. The online store features bikes such as Bottecchia and Conor models, alongside a broad choice of cycling accessories and apparel. Products include helmets from brands such as Giro, Bell and Catlike; hydration packs and vests from CamelBak; and cycling shoes from Giro, Fizik and Bontrager. Shoppers can browse items at regular or promotional prices, subject to availability.

Avalanche combines retail and workshop services, catering to riders looking for bicycles, replacement components, riding essentials or specialist technical support. Its website also provides online shopping, contact information and details about store policies, with regional and language options for customers browsing from different European markets.