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Locking Headset Spacers

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4.6 out of 5 (8 ratings)
8 customer reviews



> Headsets & Parts

  • Problem Solvers Locking Headset spacers help maintain headset adjustment when removing or replacing stems and have a compact, lightweight, and unobtrusive design.
  • Maintain headset adjustment when removing or replacing stems
  • Simplify bicycle disassembly and reassembly for shipping purposes; useful for displaying framesets in shop
  • CNC-machined AL-6061-T6; compact, lightweight, unobtrusive design
  • 8mm stack height, 34.5mm OD to match diameter of most aluminum stack spacers
  • 4mm stainless steel bolt; requires 3mm hex key for installation
  • Thickness: 8 mm
  • Steerer Tube: 1-1/8" Threadless
  • Material: Aluminum
  • Unit of Sale: Each
Shipping Offers - $2.99 Pick-a-Product Shipping, and Free Shipping on orders over $150

Black 1 1/8" x 8mm

Item #:10595-23311 
Mfg#:proprietary design 
UPC:708752036116 
EAN:708752036116 
Other #s:
HD9974 
Available to ship DETAILS
Oregon1 Today98 Tuesday
Minnesota52 Tomorrow 
New Mexico1 Today 
Utah32 Today 

pickup_biking_man Available for pickup DETAILS
Portland, OR1 Today98 Tuesday
Ogden, UT1 Today32 Tomorrow
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34 Tuesday
86 Wednesday
98 Thursday

$10.00

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Silver 1 1/8" x 8mm

Item #:10595-23312 
Mfg#:Proprietary design 
UPC:708752036123 
EAN:708752036123 
Other #s:
HD9975 
Available to ship DETAILS
Oregon0 Today27 Tuesday
Minnesota17 Tomorrow 
New Mexico0 Today 
Utah1 Today 

pickup_biking_man Available for pickup DETAILS
Portland, OR0 Today27 Tuesday
Ogden, UT1 Today18 Wednesday
Show More
27 Thursday

$10.00

Add to Cart


30 Second
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Customer Ratings

Current Customer Rating


4.6 out of 5 (8 ratings)

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Customer Reviews

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Tiny allen screw can round out

I put this spacer on so I could swap stems until I got my fit sorted out without having to adjust my headset every time.

Unfortunately, if it takes you a while to get your headset dialed in, loosening and tightening the spacer is one more step in the process.

The 3mm allen head was easy to round out. This spacer would benefit from a harder bolt.

Pros: Allows you to swap stems without losing headset adjustment.

Cons: Soft screw head, easy to damage.
Extra step in headset adjustment

Would Buy Again: Yes
Would Recommend: Yes

Reviewed on: April 05, 2012
Reviewed by: Bryan S., Portland

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These should be standard equipment

I started using a locking headset spacer on my bike when I found myself trying out new handlebars and stems frequently. Saw the idea on Sheldon Brown's website. They make it so easy since they lock in the headset tension adjustment. Then I started using them on the kid's bikes for the same reason. With these locking spacers and lock on grips, swapping bars and stems for cockpit adjustment is almost fun. I do suggest a torque wrench for the pinch bolt especially for others like me who have a torque sensing deficiency.

Pros: Simple part that does the job well.


Cons: Logo on black spacer might be too much for some.

Would Buy Again: Yes
Would Recommend: Yes

Reviewed on: September 11, 2011
Reviewed by: Jay, Always moving

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An ideal accessory for dialing in bike fit

It took me several months to tweak my randonneuring bike into a properly comfortable fit, and being able to keep the headset properly adjusted while playing around with stem position was /easily/ worth the money I paid for it.

It makes it almost as easy to adjust a threadless stem as a threaded stem.



Pros: an amazing timesaver

Cons: none

Would Buy Again: Yes
Would Recommend: Yes

Reviewed on: March 23, 2011
Reviewed by: David P., Oregon

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Can't live without it

This simple little component makes life on an airplane, in the back of the car, in your closet or on your repair stand a little bit easier.

Particularly helpful if you are flying with your bike, or need to get onto cramped trains in europe while on a cycle tour.

Pros: Simple, functional and inexpensive

Cons: Says Problem Solvers in big white lettering on the black one, would be nice if the logo was a bit subdued.

Would Buy Again: Yes
Would Recommend: Yes

Reviewed on: February 17, 2011
Reviewed by: Jonathon M., Vancouver BC

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Good if you need to remove your bars to get your bike into a tight spot, like your car, without losing headset adjustment. Also works well as an extra clamp if you a running a direct mount stem on a dual crown fork with an uncut or long steertube.

Pros: Price. Design.

Would Buy Again: Yes
Would Recommend: Yes

Reviewed on: December 01, 2010
Reviewed by: Chad H., Oregon

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EXTREMELY handy for travel, eg in the car where you loosen the stem to rotate the bars around. No more fiddling with headset adjustment every time.

Pros: Huge time saver.

Cons: Is about 8mm thick so if you need your stem lower than that it would not be the best.

Would Buy Again: Yes
Would Recommend: Yes

Reviewed on: November 17, 2010
Reviewed by: Scott, Laguna Baech

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Great for keeping the forks and headset attached and adjusted if you need to remove the stem and handlebars. Small size, blends in with the other headset spacers. I use it on a folding bike, I am always removing or turning the handlebars to put the bike in a car or small space, so this was a good find.

Pros: Works well

Would Buy Again: Yes
Would Recommend: Yes

Reviewed on: October 18, 2010
Reviewed by: Terry T., Hawaii

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very convenient to have if you like changing your bar and stem set up often. keeps your fork and headset in place while u do whatever you want without worrying about dislodging your bearings.

Would Buy Again: Yes
Would Recommend: Yes

Reviewed on: September 15, 2010
Reviewed by: Roland L., New York

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