Chain Reaction Cycles, the World's Largest Online Bike Store! At Chain Reaction Cycles we offer a wide range of products from road bikes, mountain bikes, triathlon gear and BMX bikes. We specialize in a wide selection of bike components and parts stocking top industry leading brands such as Shimano, SRAM & Avid. We pride ourselves in giving professional advice for all levels when looking to buy bikes and we stock a wide range of road bikes, mtb bikes and BMX bikes at different price levels. We currently sell brands such as KONA, Cube, Vitus, Nukeproof, Corratec, Fuji & Giant. Visit us for a top selection of Mountain Bikes, Hard Tail Bikes & Suspension Bikes online. We are not only a cycling store but also offer a huge selection of clothing and footwear brands from running shoes like Asics, Adidas, Nike, Saucony to clothing brands such as Endura, Skins, Cannondale, Castelli & Troy Lee Designs. Visit CRC for all your Cycling, Triathlon, Running & Clothing brands and products. We have the largest stock of bikes, components and accessories anywhere, so if our website says 'in stock', it's physically in our warehouse and within a short time of you placing your order we will be picking your goods off the shelf and preparing them for dispatch. We have a great team of buyers constantly sourcing the very latest kit and the best deals and we are constantly adding new brands and products. All our products come with full warranty back-up so you can shop with confidence.