Wheels Manufacturing Spacer For 24mm Spindle
Spacer For 24mm Spindle
Wheels Manufacturing

Wheels Manufacturing Spacer For 24mm Spindle

In Stock

Precision 0.5mm Delrin spacers (bag of 10) for Shimano 24mm and SRAM 22/24mm (GXP) spindles. Use to fine-tune chainline, eliminate crank play, and protect bearings.

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Wheels Manufacturing, 24mm BB spindle shim, 0.5mm, bag of 10 — In Stock
Wheels Manufacturing, 24mm BB spindle shim, 1.0mm, bag of 10 — In Stock

Product Details

Overview & Technology: Wheels Manufacturing 24mm Spindle Spacer

Wheels Manufacturing Spacer for 24mm Spindle (BB-24MM-0.5, PN 380280) is a kit of thin, precision-machined shims made from engineering-grade Delrin (acetal). Each shim measures 0.5mm thick and comes in a convenient bag of 10 so you can stack shims for incremental adjustments. This simple part solves common bottom bracket and crankset fitment issues without expensive replacement parts. Delrin construction gives these spacers a low-friction, wear-resistant surface that won’t corrode or gall crank hardware. The material is dimensionally stable, chemically resistant to common bike cleaners and greases, and soft enough to avoid marring aluminium or steel spindles while still providing consistent spacing.

Key Features & Benefits

Precision thickness and pack size: Each shim is 0.5mm thick and supplied as a bag of 10—perfect for stepwise chainline tuning or taking up slight crank play. A matching 1.0mm variant is also available for larger adjustments. • Material: Machined engineering-grade Delrin for low friction and long wear life. • Compatibility: Works with Shimano 24mm spindles and SRAM GXP 22/24mm systems where 24mm end is used. • Function: Adjust chainline, remove axial play, and protect bearings by getting preload right.

Fit, Installation & Compatibility

These shims are designed specifically for 24mm spindle cranks (Shimano Hollowtech II style) and for the 24mm side of SRAM GXP spindles. Use them on the non-drive or drive side as required by your crank manufacturer and frame spacing. They’re thin enough to fine-tune chainline in 0.5mm increments for precise drivetrain alignment. Installation is straightforward: clean mating surfaces, slide the shim onto the spindle where specified by the crankmaker, reassemble and torque to the crank supplier’s spec. If you’re correcting play, add shims gradually until axial play disappears while avoiding over-preloading bearings. Always follow crank and BB manufacturers’ torque and service guidance.

Who This Spacer Is For

Road riders, mechanics, and home wrenches who run Shimano Hollowtech II cranks or SRAM GXP setups will find these shims indispensable for small, accurate adjustments. They’re ideal for wheel shops and riders who swap cranks, change chainring setups, or build bikes with tight tolerances. If you want a tidy, reversible way to correct chainline or remove subtle crank play without replacing cups or bearings, these Delrin shims offer a low-cost, durable solution that preserves your existing hardware.

Key Features

  • ✓ 0.5mm precision shim thickness for fine chainline and preload adjustments
  • ✓ Machined engineering-grade Delrin resists wear and won’t corrode
  • ✓ Bag of 10 shims lets you stack for incremental spacing control
  • ✓ Compatible with Shimano 24mm and SRAM GXP 22/24mm (24mm side)
  • ✓ Prevents overloading bearings by enabling accurate crank preload tuning
  • ✓ Low-friction surface reduces chance of squeaks and component marring

Specifications

Misc 0.5mm, bag of 10

Product Identifiers

Vendor Item # BB-24MM-0.5
UPC 836572009697

Frequently Asked Questions

Will these spacers work with my Shimano Hollowtech II crank?

Yes. These 0.5mm Delrin shims are designed for 24mm Shimano-style spindles (Hollowtech II). Use them to fine-tune chainline or remove axial play as instructed by your crank manufacturer.

How many shims should I use at once?

Start with a single 0.5mm shim and recheck crank play and chainline. Add shims one at a time until play is eliminated or chainline is corrected. Avoid over-preloading bearings—follow crank torque specs.

What's the difference between the 0.5mm and 1.0mm variants?

The only difference is thickness. 0.5mm is for fine, incremental adjustments; 1.0mm is for larger corrections. Many mechanics combine shims to get custom thicknesses as needed.

Can I use these shims on SRAM GXP cranks?

Yes, they fit the 24mm side of SRAM GXP spindles (GXP uses a 22/24mm stepped spindle). Confirm whether the adjustment should be made on the drive or non-drive side per SRAM guidance.

Do Delrin shims affect bearing life or warranty?

Properly used shims help achieve correct preload and chainline, which supports bearing longevity. They shouldn’t adversely affect warranty if installed according to manufacturer instructions; always follow crank and BB maker recommendations.

Buying Guide

When choosing spacers for 24mm spindles, pick the thinnest increment that lets you achieve the correct chainline or removes axial play without forcing extra preload on bearings. The 0.5mm Wheels Manufacturing Delrin shim is ideal for stepwise tuning; many builders combine multiple shims to reach a precise thickness. Consider whether you need a small kit for occasional adjustments (0.5mm pack) or a shop-ready stock including both 0.5mm and 1.0mm sizes. Always verify your crank vendor’s assembly notes and torque specs before finalizing changes.

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