Problem Solvers Headset Stack Spacer - 28.5mm | Silver | Aluminum
Headset Parts
Problem Solvers Headset Stack Spacer - 28.5mm · Silver · Aluminum
Problem Solvers Headset Stack Spacer - 28.5mm | Silver | Aluminum
The Problem Solvers Headset Stack Spacer is a clean, no-nonsense solution for riders dialing in their cockpit position on modern bikes. Read the overview
10 in stock
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Overview
Is the Problem Solvers Headset Spacer Right for Your Build?
The Problem Solvers Headset Stack Spacer is a clean, no-nonsense solution for riders dialing in their cockpit position on modern bikes. This 1-1/8 inch spacer fits the standard steerer tube diameter found on the vast majority of road, gravel, and mountain bikes, making it one of the most universally useful fit tools in the shop. Made from CNC-machined aluminum with a polished silver finish and no logos, it integrates cleanly into any headset stack without drawing attention.
At 28.5mm inner diameter, this spacer drops into 1-1/8 inch steerers with ease and provides a solid, rattle-free platform when properly torqued. The silver polished finish complements silver stem hardware and headset components, and the logoless design keeps your cockpit looking intentional. Sold as a single spacer, so you can add exactly what your fit demands without accumulating a drawer full of unused pieces. Whether you're raising the bars for a more comfortable riding position or building a new frameset from scratch, this is the spacer to reach for.
All the specs
- Inner Diameter
- 28.5mm (1-1/8 inch)
- Material
- Aluminum
- Finish
- Silver anodized/polished
- Logo
- None
- Quantity
- 1
Good questions
Get to know Problem Solvers

There's more to Problem Solvers than this one product. Our Problem Solvers page has the full Problem Solvers lineup we carry and more about the brand.
Visit the Problem Solvers page →What steerer diameter does this spacer fit?
This spacer fits 1-1/8 inch (28.5mm) steerer tubes, which is the standard size on the vast majority of modern road, gravel, and mountain bike forks. Double-check your fork spec if you are unsure.
How many spacers do I need to raise my handlebars?
That depends on your desired height change. Spacers are typically available in 2.5mm, 3mm, 5mm, 10mm, and 20mm increments. Stack multiple spacers below your stem, but keep total spacer height within your fork manufacturer's recommendations.
Does the silver finish match most headset components?
Silver aluminum spacers pair well with silver headsets, stems, and hardware. They also work cleanly on all-black builds as a subtle contrast element. The finish is consistent and logoless, keeping your cockpit looking intentional.
What riders say about the Lab
“Paul does a great job. He got my bike I bought from someone there in their town and had it packed and shipped to me in Austin, TX… It got here in perfect condition!”
“Fantastic store. It has everything you may want/need for cycling. Great team. Highly recommend to anyone looking for cycling related things and bike service.”
“I recently got back into biking and wanted to add some things onto my bike. They had most of what I was looking for in shop… I'm really happy to have found them.”
Questions about this one?
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