Bicycle Headset Spacer — durable, lightweight adjustment for your handlebar height Key benefits Adjust handlebar height quickly to match your riding style and improve comfort and control. Made from high-quality material for long service life; low weight with strong compressive resistance so it won’t easily deform. Easy to install and remove — adds minimal weight and does not overly burden the bike. Compatible with stems and forks used on MTB, BMX, mountain bikes and road bikes. What it does Fine-tunes stack height in the headset area to optimize riding position and ergonomics. Preserves headset stiffness and steering precision while providing a secure fit between stem and steerer. Practical applications Commuting: raise the bars for a more upright, comfortable posture on daily rides. Trail and mountain riding: add spacers to improve leverage and control on technical terrain. Road or fitness riding: adjust stack height to dial in aerodynamics and power transfer after changing stem or handlebars. Features at a glance Lightweight construction for minimal added mass High durability and long service life Strong resistance to compression and deformation Straightforward installation compatible with common bike stems and forks Our headset spacers provide a simple, reliable way to customize your cockpit without complex tools or heavy components.