11/20/2025: Dear Friends, I am currently in chemotherapy and unable to promptly answer emails or ship orders. I will do my best to take care of your needs, but hope you can be patient. Thank you all for your support.

Bicycle headset parts & accessories

On this page: Wheels 1" headset locker | Growler 1" locking crown nut | FSA 1 1/8" headset locker | Gorilla 1 1/4" headset locker | Aheadset Stem Cap, flat finish | Aheadset Stem Cap, shiny finish | Cinelli 1 1/8" Threadless Headset Stem Cap | Giant Stem Cap | Jamis Bicycles Stem Cap | Ritchey 1 1/8" Stem Cap w/Bolt, Star Nut | Sinclair 1" threadless stem caps | Sinclair 1 1/8" threadless headset caps | Stronglight 1" Threadless Stem Cap | Stronglight 1 1/8" Threadless Stem Cap | 3T threadless stem cap & bolt | Wheels 1" red threadless stem cap | Threadless stem cap bolt | FSA 1 1/8" Carbon Preload Plug for threadless headsets | FSA 1 1/8" preload plug for threadless headsets | Ritchey 1 1/8" Preload Plug | Problem Solvers 1 1/8" Black Threadless Stem Cap | Terry purple alloy 1" alloy headset cap and bar plugs

Fork Crown races: Tange 27.0mm Needle fork Crown Race | YST 27.0mm fork crown race

Threadless headset spacers: Amp 1 1/8" spacers | RavX blue 1 1/8" spacers | RavX red 1 1/8" spacers | RavX silver 1 1/8" spacers | RavX white 1 1/8" spacers | Pink Carbon 1 1/8" spacer kit | XLC 1 1/8" blue alloy spacer kit | 1 1/4" spacers

Star nuts: 1" | 1 1/8" | 1 1/4"

Stem Captain threadless stem caps: Thermometer, Compass

We do not have an on-line shopping cart at this time. Please call us: (503) 480-2001 or email: sscycleworks@comcast.net

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Wheels Manufacturing Growler 1" headset locker. New, $25.00

Part# 33201

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Growler 1" locking crown nut. Used, $20.00/each

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FSA 1 1/8" top nut headset locker. New, $25.00

Part# 33202

Installing this headset locker will end loose headsets.

Comes with the needed allen wrench.

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Gorilla 1 1/4" top nut headset locker. New, $25.00

Part# 33203

Installing this headset locker will end loose headsets.

New, in its factory packaging

Top view

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Aheadset Stem Cap, flat finish. Used, $8.00/each

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Aheadset Stem Cap, shiny finish. Used, $8.00/each

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Cinelli 1 1/8" Threadless Headset Stem Cap. New, $20.00/each

This will work on a 1" steering tube if the steering tube is shimmed out to 1 1/8".

Top of the cap

The cap flipped over

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Giant Stem Cap. Used, $8.00/each

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Jamis Bicycles Stem Cap. Used, $8.00/each

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Ritchey 1 1/8" Stem Cap with Bolt & Star Nut. New, $10.00/each

We have two in stock.

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Sinclair 1" threadless stem caps. New

We have these caps in Green | Red

Sinclair 1" threadless green stem cap. New, $20.00/each

Part# 31289-G

We have two in stock.

Top of the cap.

The cap flipped over

Sinclair 1" threadless red stem cap. New, $20.00/each

Part# 31289-R

We have four in stock.

Top of the cap

The cap flipped over

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Sinclair 1 1/8" threadless headset caps. New, $10.00

We have two: Green | Red

Sinclair 1 1/8" threadless green headset cap. New, $10.00

Part# 31290

New, in the package

And the flip side

Sinclair 1 1/8" threadless red headset cap. New, $10.00

Part# 31289

An easy way to dress up your bike

And the back side of the cap.

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Stronglight 1-inch Threadless Stem Cap. New, $8.00/each

Part# 31289

We have 63 in stock.

Top

Here's the Stronglight cap flipped over.

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Stronglight 1 1/8-inch Threadless Stem Cap. New, $8.00/each

Part# 31290

We have 39 in stock.

Here's the top of the cap

And the cap flipped over.

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3T Threadless Stem Cap & Bolt. New, $20.00/each

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Wheels Manufacturing 1" red threadless stem cap. New, $15.00/each

Front of the package

The back of the package

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Threadless Stem Cap Bolt. New, $2.00/each

Part# 512

We have 96 in stock.

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FSA 1 1/8" Carbon Preload Plug for threadless headsets. New, $30.00/each

Part# 33222

In its factory package

Here it is out of the package

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FSA 1 1/8" preload plug for threadless headsets. New, $20.00/each

Part# 33226

In in its package.

And here it is, ready to go to work.

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Ritchey 1 1/8" Preload Plug. New, $16.00/each

Part# 33228

The plug.

Side view

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Terry purple alloy 1" alloy headset cap and bar plugs. New, $65.00

• Headset top cap is for 1" headsets

Nicely made parts

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Problem Solvers 1 1/8" Black Threadless Stem Cap. New, $8.00/each

Part# 31290

We have two in stock.

Need one? Problem solved.

Here's the cap flipped over.

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Tange 27.0mm Needle Fork Crown Race. New, $15.00/each

Part# 33170

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YST 27.0mm Fork Crown Race. New, $15.00/each

Part# 33171

We have eight in stock.

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Amp 1 1/8" Head Tube Shims/Spacers. New, $5.00/each

Part# 34268

We have four in stock.

Here's one of the spacers.

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RavX 1 1/8" Blue threadless alloy headset spacer set. New, $6.00/set

Part# 33232-B

Three spacers: 3mm, 5mm & 10mm tall.

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RavX 1 1/8" Red threadless alloy headset spacer set. New, $6.00/set

Part# 33232-R

Three spacers: 3mm, 5mm & 10mm tall.

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RavX 1 1/8" Silver threadless headset spacer set. New, $6.00/set

Part# 33232-S

Three spacers: 3mm, 5mm & 10mm tall.

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RavX 1 1/8" White threadless headset spacer set. New, $6.00/set

Part# 33232-W

Three spacers: 3mm, 5mm & 10mm tall.

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Summit Pink Carbon 1 1/8" threadless headset spacer kit. New, $18.00/each

Part# 33290

We have three kits in stock.

New, on their header card.

Side view. You can see they are pink and they are carbon fiber.

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XLC 1 1/8" blue threadless alloy headset spacer kit. New, $10.00/set

Part# 33235

We have ten sets in stock.

A total of five spacers.

Here's better look at them

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Threadless headset spacers for 1 1/4" steering tubes. New, $7.00/each
1.5mm tall | 2.5mm tall | 5mm tall | 10mm tall

1.5mm tall threadless headset spacer for 1 1/4" steering tubes. New, $7.00/each

Part# 33270

We have three in stock

2.5mm tall threadless headset spacer for 1 1/4" steering tubes. New, $7.00/each

Part# 33271

5mm tall threadless headset spacer for 1 1/4" steering tubes. New, $7.00/each

Part# 33273

10mm tall threadless headset spacer for 1 1/4" steering tubes. New, $7.00/each

Part# 33274

We have 22 in stock

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1" Star Nut. New, $4.00/each

Part# 33229

We have 51 in stock.

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1 1/8" Star Nut. New , $4.00/each

Part# 33230

We have 37 in stock.

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1 1/4" Star Nut. New, $5.00/each

Part# 33231

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Stem Captain Threadless Stem Cap accessories:
Thermometer | Compass

The Stem Captain is compatible with 1 1/8" and 1" threadless style headsets that utilize a stem cap. The Stem Captain base piece replaces the standard stem cap. Your insert of choice can then be attached to the base.

Simply unscrew your existing stem cap and replace with the Stem Captain base. Press your chosen functional insert into the base. That’s all there is to it. (Note: this assumes that your current headset/stem is properly set up).

Stem Captain Threadless Stem Cap Thermometer. New, $25.00

Still in its factory packaging

Here's the back of the packaging

Stem Captain Threadless Stem Cap Compass. New, $25.00

Part# 31307