XDSBIKE Cross300 24sp Comfort Hybrid Bike // Jet BlackXDSBIKE Cross 300: High Performance 24 Speed Fitness Hybrid The Cross 300 is a dedicated fitness and commuting machine designed for riders who prioritize speed and efficiency. Unlike basic 21 speed cruisers, this model features a Shimano Altus 24 speed drivetrain. The expanded gear range is engineered for performance; it allows you to maintain a high cadence on long straightaways and stay seated during steep climbs, significantly reducing knee strain