K2, 2006 K2 Lithium 4.0 Mountain Bike w/ Suspension All Mountain Bikes >>> Mountain Bikes by K2 More details and ordering info. You will have enjoyable thrills on this bike; this mountain bike is so much fun. A spree to the mountaintops is the finest when you're riding a 2006 K2 Lithium 4.0 Mountain Bike w/ Suspension. Few mountain cyclists select this bike; it's more for those mountain cyclists who want something different. If you're addicted to adrenaline, the 2006 K2 Lithium 4.0 Mountain Bike w/ Suspension will surely satisfy your need for excitement. Riding this mountainbike is delightful exercise; this bike will keep you healthy. User input on 2006 K2 Lithium 4.0 Mountain Bike w/ Suspension by K2: Be the first to submit input on this product Submit Input: Your Name: Write or Paste Input here: Upload picture:      Review Guidelines