Wheels Manufacturing Bottom Bracket Spacers
Bottom Bracket Spacers
Bottom Bracket Spacers
Wheels Manufacturing

Wheels Manufacturing Bottom Bracket Spacers

In Stock

CNC-machined 0.7mm aluminum bottom bracket spacer from Wheels Manufacturing — a lightweight, precision shim for dialing chainline and bearing preload. Sold one per bag; also available in 1.8mm and 2.5mm sizes.

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Available Options

Option Price Availability
Wheels Manufacturing, Bottom bracket spacer, 0.7mm, BB-0.7 — In Stock
Wheels Manufacturing, Bottom bracket spacer, 1.8mm, BB-1.8 — In Stock
Wheels Manufacturing, Bottom bracket spacer, 2.5mm, BB-2.5 — In Stock

Product Details

Overview & technology

Wheels Manufacturing BB-0.7 is a precision, machined aluminum spacer designed to give you fine control over bottom bracket stack height, chainline and bearing preload. At just 0.7mm thick this thin shim is ideal for small adjustments where a full spacer or different axle length would be too coarse. Manufactured with tight tolerances from machined aluminum alloy, the spacer is lightweight and flat to ensure even contact across the mating surfaces. The single-piece, single-bag packaging means you can carry spares in your toolbox or pack for on-trail adjustments.

Key features & benefits

Precision thickness: The 0.7mm dimension provides a subtle but meaningful change to chainline and bearing sit that can eliminate rubbing, improve shifting and remove play in cranksets. Use it where 1mm+ jumps are too large. Machined construction: CNC-machined aluminum delivers consistent thickness and a true, flat face that resists compression and deformation under preload. That stability keeps the adjustment predictable ride after ride. • Single spacer per bag—easy to stash in a workshop or saddle bag. • Available in multiple sizes: 0.7mm, 1.8mm and 2.5mm for stacking and fine-tuning.

Fit, compatibility & installation notes

This spacer is intended as a universal shim for bottom bracket/crank interfaces that accept external or internal shims — check your crank and BB manufacturer's instructions before installing. It commonly works with many hollow spindle cranksets and threaded press-fit assemblies where small changes in stack height are needed. Because tolerances and interfaces vary across standards (BB30, BSA, PF30, SRAM DUB, Shimano Hollowtech II, etc.), always verify the required spacer thickness for your specific crankset and frame. The BB-0.7 can be stacked with the 1.8mm and 2.5mm variants from Wheels Manufacturing to achieve custom spacings.

Who this spacer is for

This 0.7mm bottom bracket spacer is for home mechanics, shop techs and riders who demand precise chainline and bearing preload. It’s especially useful for road cyclists fine-tuning shifting performance or eliminating subtle creaks and play. If you frequently swap cranksets, run adapters, or convert between axle standards, having a selection of thin spacers like the BB-0.7 lets you make small, safe adjustments without costly parts swaps.

Key Features

  • ✓ CNC-machined aluminum delivers consistent, flat shim surfaces
  • ✓ 0.7mm thickness for precision chainline and preload tuning
  • ✓ One spacer per bag—lightweight and easy to carry
  • ✓ Stackable with 1.8mm and 2.5mm variants for custom spacing
  • ✓ Prevents bearing preload issues and reduces drivetrain noise
  • ✓ Compatible with many crank/BB interfaces—verify before install

Specifications

Misc 0.7mm

Product Identifiers

Vendor Item # BB-0.7
UPC 836572006702

Frequently Asked Questions

What does a bottom bracket spacer do?

A spacer alters the axial position of the crank or bearing stack by a small, controlled amount. That adjustment can correct chainline, improve shifting, remove bearing preload or eliminate contact and noise between components.

How do I choose the right thickness?

Measure the current chainline and follow your crank/BB manufacturer's recommended spacer specs. Use calipers to verify gap and start with the smallest spacer (like 0.7mm) — you can always stack larger spacers for bigger changes.

Can I stack multiple spacers?

Yes. Wheels Manufacturing offers 0.7mm, 1.8mm and 2.5mm spacers that can be stacked to create custom thicknesses. Ensure stacked spacers sit flush and don't introduce uneven loading on bearings.

Is this spacer compatible with my crankset?

Compatibility depends on crank spindle diameter and your bottom bracket standard. The BB-0.7 is a generic machined aluminum shim intended for many systems, but always check your crank and BB spec sheet before installation.

How many spacers come in a pack?

This item is sold as one spacer per bag, making it convenient to buy exactly what you need or keep spares in your toolbox or saddle bag.

Will this spacer damage carbon frames or cranks?

No—when installed correctly a thin aluminum spacer will not damage carbon components. Avoid over-tightening and follow torque specs to prevent localized compression; use a thin layer of grease on metal-to-metal contact when recommended.

Buying Guide

When buying bottom bracket spacers, identify the change you need: chainline correction, bearing preload, or to remove rub between crank and frame. Start with the smallest increment (0.7mm) and keep a small assortment on hand—1.8mm and 2.5mm allow for stacking and greater flexibility. Check compatibility with your crank spindle and bottom bracket shell, measure with calipers, and prefer CNC-machined spacers for consistent thickness. If you’re unsure, buy single pieces to test before committing to a full set.

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