At Velogear, we're all about bikes. We love riding them, reading about them and fixing them. And when bikes are on TV, we love watching them. We want to make it easy for you to indulge your love of cycling, too. We stock cycling clothing from the best brands in the sport, along with books, DVDs, parts, accessories and more. We want to be your one-stop shop for all things cycling!
Shimano's Dura-Ace Di2 takes shifting to the next level. This amazing technology is powered by this small, light, high-output Lithium Ion battery that delivers reliable, long life even in the worst of conditions. Even while riding terrain that requires lots of shifting, the battery is capable of about 1,250 miles of use before requiring recharging (this takes 90 minutes). The battery includes a mount that easily attaches to the bottle cage bolts on your frame. And, the battery can be removed without tools for charging (charger sold separately).