Kona Lavadome mountain bike This picture shows a mountain bike, a human-propelled, multi-terrain vehicle. While it can be succesfully used on moorland, forest, roads, and large hills it is not actually suitable for going up mountains. 14/12 gauge double butted spoke black anodised low torsion hub twin wall, eyeletted rim 8 speed, wide ratio gearing double cross lacing of 32 spokes Front wheel The front wheel provides grip, steering and some shock absorption