Specialized Roubaix SL4 Comp RIM Di2 Bike 2017 preschool The ATAC MX 6 is

The ATAC MX 6 is the perfect pedal for mountain

Suitable for ski files from 20 to 25 mm width and up to 6 mm thick

360º Stretch Merino Blend

5-LITER CRUX™ RESERVOIR

Remarkable performance and value make the Sport Mountain Bike shoes one of the best-selling pairs we make

Specialized Roubaix SL4 Comp RIM Di2 Bike 2017 preschool The ATAC MX 6 isThe Roubaix SL4 Comp Di2 is what you might call an "upgrade," as this endurance bred bike is head and shoulders above its competition. After all, we designed it to be more than just a step up from an entry level road bike. Instead, it's a race ready machine that's tailored to long, hard rides in less than ideal conditions. And to make sure of it, its FACT 10r carbon fiber frame has been outfitted with Shimano's 11 speed Ultegra Di2, an ultra stiff