BMX Frames

Understanding BMX Frames

The largest and priciest component of your BMX setup is the BMX bike frame. It plays a significant role in shaping your riding style and how you evolve as a rider. Both freestyle and BMX race frames adopt the traditional diamond shape. However, race frames are designed to be longer, offering greater stability.

The primary aim for freestyle BMX bike frames is to ensure they are robust and resilient enough to handle hard impacts. Consequently, they are usually crafted from steel. Conversely, race frames are engineered to be as lightweight as possible, typically using aluminium.

Choosing the Right BMX Frame Size

BMX frames come in various sizes. The preferred frame size is largely subjective, although a general guideline is to opt for a larger frame if you're taller.

The measurement of frames is mainly determined by the length of the top tube in freestyle frames, stated in inches. For race BMX frames, they are categorised into "frame names" starting from Mini and extending up to Pro XXXXL.

Besides the top tube length, the angle of the headtube is another factor influencing the overall feel of the bike. A steeper angle draws the front wheel closer, facilitating front-end tricks with ease. A gentler angle pushes the wheel further out, enhancing control at higher speeds. If you are uncertain about your preference, it is advisable to select the industry standard, within the 74° to 76° range, for a balanced setup.

Exploring the BMX Chainstay

The BMX chainstay is the distance from the centre of the bottom bracket to the centre of the rear axle. This can range from being fully inserted into the rear dropout (known as slammed, the shortest chainstay possible) to the middle of the dropout (centre). The chainstay is a crucial aspect of your frame, affecting the bike's handling. Typically, chainstay lengths are between 12 and 14 inches.

Park and street riders often favour a shorter chainstay for a more responsive setup that allows for swift spins and sharp turns. On the other hand, trail riders prefer a longer rear end for greater stability and control.

If the thought of chainstays has you considering a new chain, explore our BMX Chains to see if something appeals to you.