Wheels Manufacturing Freewheel / BB Spacer
Freewheel / BB Spacer
Freewheel / BB Spacer
Wheels Manufacturing

Wheels Manufacturing Freewheel / BB Spacer

In Stock

Precision 1.0mm stainless steel spacer from Wheels Manufacturing, sold as a bag of 10. Use behind a bottom bracket cup or the largest sprocket to fine-tune cassette/freewheel spacing and chainline.

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Available Options

Option Price Availability
Wheels Manufacturing, Freewheel and cassette spacer, 1mm, Bag of 10 — In Stock
Wheels Manufacturing, Freewheel and cassette spacer, 1.5mm, Bag of 10 — In Stock
Wheels Manufacturing, Freewheel and cassette spacer, 2mm, Bag of 10 — In Stock

Product Details

Overview & Technology

Wheels Manufacturing Freewheel / BB Spacer (1.0mm) is a precision shim designed to give you reliable, repeatable spacing when adjusting cassettes, freewheels and bottom bracket cups. Each shim is stamped from corrosion‑resistant stainless steel, finished with deburred edges and tight thickness tolerances so you get consistent results every time. These shims are available in small, serviceable packs (bag of 10) so you always have spares for wheel builds, hub maintenance or on‑trail fixes. The 1.0mm thickness is a common go‑to for small chainline and cog clearance corrections without altering drivetrain geometry significantly.

Key Features & Real‑World Benefits

Precision thickness: 1.0mm nominal thickness with manufacturing tolerances kept tight to ensure predictable spacing when stacked or used alone. That means fewer trial-and-error adjustments when chasing cog rub or setting chainline. Durable stainless construction: stamped from 18/8 stainless steel for corrosion resistance and long life in wet, salty and muddy conditions. Smooth, deburred edges prevent damage to splines, seals and bearing surfaces during installation.

Fit, Compatibility & Usage

These spacers are a universal solution for many cassette, freewheel and bottom bracket applications — use them behind the largest sprocket of a cassette or freewheel, or behind a bottom bracket cup where small axial adjustments are required. They are thin shims intended for fine tuning rather than structural loads. Because they are flat, keyed shims are not required — they sit between metal surfaces to shift component position by exactly 1.0mm per shim. They work with most hub and freehub systems as well as typical threaded freewheels and bottom bracket cups; always check manufacturer tolerances for high-end sealed systems before stacking multiple spacers.

Who This Is For

Mechanics, bike builders and home wrenches who want a small, reliable way to adjust cog spacing and chainline will find these shims indispensable. They’re ideal for wheel builds, swapping cassettes/freewheels, setting BB preload on older threaded systems, and for carrying in a workshop kit as a go-to spacing solution. If you frequently service wheels or race on mixed surfaces where quick spacing tweaks are common, a bag of 10 gives you spares for multiple jobs without buying individual pieces.

Key Features

  • ✓ 1.0mm stainless steel spacer — precise, repeatable shim thickness
  • ✓ Bag of 10 shims for workshop use and on‑trail spares
  • ✓ Stamped and deburred for safe handling and spline protection
  • ✓ Ideal for cassette, freewheel and bottom bracket cup adjustments
  • ✓ Corrosion‑resistant 18/8 stainless construction for long life
  • ✓ Simple flat shim design stacks cleanly without binding

Specifications

Misc 1.0mm

Product Identifiers

Vendor Item # FW-1.0
UPC 836572001844

Frequently Asked Questions

What is this spacer used for?

This spacer is used to add 1.0mm of axial spacing behind a bottom bracket cup or behind the largest sprocket of a cassette or freewheel. It fine‑tunes chainline and cog clearance without replacing parts.

Can I stack multiple spacers to get thicker increments?

Yes — you can stack these 1.0mm shims to achieve larger increments (two shims = 2.0mm, etc.). Keep stacking to a minimum and check for interference with seals, bearings or locked components before final torqueing.

What material are the spacers made from?

These shims are stamped from corrosion‑resistant stainless steel (18/8 grade), giving good durability in wet and salty conditions and preventing rust that could seize components over time.

Are these compatible with my cassette/freehub?

They're broadly compatible with most cassette and threaded freewheel systems for axial spacing. For modern sealed freehub and some OEM-specific designs, consult the hub or frame manufacturer’s spec sheet to confirm allowable spacer use.

How many should I carry on a ride?

For on‑trail emergencies, 1–3 shims are usually enough to correct minor cog rub or a shifted spacer. A workshop or mechanic should keep a bag of 10 for wheel builds and regular servicing.

Will adding spacers affect my drivetrain performance?

When used correctly, small axial adjustments improve sprocket alignment and reduce rubbing. However, excessive or asymmetric stacking can alter chainline and shifting feel — measure carefully and test ride after adjustments.

Buying Guide

When buying freewheel and cassette spacers, choose the thickness you need (1.0mm, 1.5mm, 2.0mm) based on the small axial adjustments you want to achieve. Stainless steel shims are a good all‑round choice for durability and corrosion resistance; aluminium shims are lighter but less durable. Buy multi‑packs (bag of 10) if you service wheels frequently — you’ll save time and avoid frustrating trips to the parts store. Keep a few in your workshop kit and 1–3 in your saddlebag for field fixes.

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