The Fox Transition Duffle Bag is designed just for mountain bikers

Due to the reduced air volume within the tyre you use a smaller tube which saves on a bit of weight

6 x 180mm = 545g

thus reducing bottom bracket creaking and premature bearing wear

Pros: Shimano quality

Spank Spike 800 Vibrocore Alloy Bars - Black - Orange - 31.8mm - 30 Rise - 800 Images Uploaded - Ready for Review The Fox Transition Duffle BagSpank has taken alloy handlebar tech to the next level with Vibrocore to create a race tuned and award winning handlebar design. It all starts with a 6 series alloy that is shaped to perfection with their Dual XGT double butting process. Essentially, this makes the bars thicker for maximum strength where it's needed and reduces the thickness in other areas to save on weight. The bars are then injected with Spank's fancy Vibrocore foam which uses the