A bicycle frame with an improved suspension system. The bicycle frame includes an adjustable dropout assembly that provides adequate shock absorption without affecting or being affected by the chain length or the pedaling action of the bicycle. The bicycle frame includes a uni-axis system that increases the efficiency and performance of the bicycle while eliminating latter movement found in traditional frames. The bicycle frame includes a micro-adjustable suspension system that allows the rider to easily adjust the suspension of the frame to precise measurements quickly and without additional tools.