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Neco Bike Headset Compression Top Cap, 1 inch and 1 1/8’’ Expander Nut Plug
The Neco headset compressor nut is best expander for your carbon bike and aluminum bike. While other headset star nut is only for metal fork tube, not works with carbon fiber tube. Neco is world class bike components supplier with over 30 years history.
FEATURES
- STRONG COMPRESSOR - Compression plug is good for carbon tube and aluminum tube, it offers stronger force and can protect the carbon tube as well. (Ordinary star nut is only for metal tube)
- LARGE SIZE - Bigger compressor is more stronger and safety. We offer expander depth 2 inch and 3 inch. 2 inch is large size, 3 inch in extra large. We recommend 2 inch for most scenario. Strong enough but budget cost
- 1” & 1 - 1/8” - Small size is for 1” tube, fork inner diameter 20-22.2mm. Middle & large & extra large is for 1-1/8”, fork inner diameter 22-25.4mm
- Cabon cap version looks very great. We recommend large size and cabon cap. Aluminum cap offered as well
- Neco 100% original, high quality components and surface treatment, excellent strength for all heavy duty cycling
- Weight: small size 40g, middle 45g, large 75g, extra large 85g
About Neco
NECO - Professional Bike Parts Manufacturers
Neco Technology Industry Co. Ltd., founded in 1986, have been in the forefront of machinery tooling design and development. Having acquired more than 30 years of experience in the cycling field.
Neco will always strive to meet the commitments to all of the customers and provide competitive, high-value products.
John Silva
Reviewed in the United States on January 7, 2025
Definitely the best headset compressor on Amazon. They even use springs instead of O rings. Well done
RickSpeed
Reviewed in the United States on September 9, 2024
Wont slip down in to fork tube because of ridge at top. Extends all the way down past headset bearing, giving support inside entire carbon fork tube. The top of my expensive fork had been overtightened with a small 3/8 inch long vertical crack starting at top of tube. I didn't want to cut the fork down any further so sought something that would provide more clamp support within the fork tube. After fitting this part and riding a couple of hundred miles on gravel, I disassembled for inspection and the crack has not expanded, I believe due to the support added behind the clamp area of the stem clamps. A bit heavy (alloy) but worth it for peace of mind.
Customer
Reviewed in the United States on September 11, 2024
I always prefer compression plugs over star nuts. But especially with carbon steerers, the longer length of these is superior to the small ones which only apply force to a small are of the steerer tube. It applies less force over a larger area, putting less stress on the steerer, and preventing damage from over expanding the tube, or compressing it by putting the stem on too tight. Give you a much better and safer mounting. That's worth the handful of grams more the larger ones weigh over the ultralight plugs from other companies.
John crotts
Reviewed in the United States on October 31, 2024
Not what I thought it was
Zuk..
Reviewed in Canada on January 24, 2024
Bought 80mm for my MTB, works just fine. And was delivered on time. Thanks!Nope, did not work well. I replaced it with conventional starnut.
AMO
Reviewed in the United States on June 27, 2023
This neco small 1" compression cap fits great inside my 1" steerer tube carbon fork. I don't think you need to waste extra $ for the carbon cap since I purchased the aluminum cap but just ended up using my old colorful cap since I really didn't want the words "neco" on my steerer top. Works great. No more needing to find/pay someone to pound in that star nut. Easy DIY.
Eire
Reviewed in the United States on June 15, 2023
I bought the long one for my carbon steerer tube, and it is working fine with the extension I put on. I figure it'll give the tube some beef to strengthen it.
MoneyPit
Reviewed in the United States on March 3, 2023
These work really well, and they have a feature that at least some competitors do not, and its a big help.Its something you wouldn't really think of until you use a competing product that doesn't have it. These expanders work by expanding until they press against the interior of your carbon fiber steering tube. So what happens when you loosen the expander and thus shrink it? With a different brand... the expander lost its tension against the steering tube and fell right down to the bottom of it.The Neco expander has a lip on its top that fits over the top of your steering tube. It prevents this from happening. It also ensures a specific, consistent position for the cap.Its not a big deal until you work with an expander that doesn't have this, which I had two of (they were different brands, too). A very nice convenience and an expander cap that, beyond this, is made of what appear to be top quality parts.
BeeOutdoors
Reviewed in the United States on October 30, 2023
I was a little concerned by the people who posted reviews saying this compression plug slipped, even when torqued to spec. But, I decided to take a chance because I wanted something longer than usual in order to provide extra strength to the carbon steer tube.As it turned out, this design is no different than any other (except for the length). It is made well, and has a surface that is textured to grip well on the inside of the steer tube. It worked as expected, and just as well as any other.I question whether the people who said it slipped were in fact applying too much torque to the cap screw. Too much torque would definitely cause even a properly secured expanding compression plug to slip, but it's important to know that very little torque is actually needed when tightening down the capscrew. Apply just enough to prevent the headset from knocking. On my bike that was only about 3 N-m. Any more and you'll ruin your headset (the bearings).One other thing, the title -- Neco Headset Expander Top Cap Star Nut Plug Bolt Stem Expanding Nut -- is incorrect because this is neither a headset, nor a star nut. A better title might be "Neco Steertube Compression Plug / Expanding Nut, includes top cap".
Andrew Schwab
Reviewed in Canada on October 27, 2023
I'm 225lbs, and do a lot of 'under biking' on my gravel bike, hitting single track around my home on rides wherever I can. I started having some headset issues, and realized the stock ENVE expansion plug I was using on my ENVE fork really didn't offer a lot of support for my stem, and came nowhere near my top headset bearing.I bought the longest version of this Neco plug, and it offers great support for my entire stem clamp area, and goes all the way past my top headset bearing, significantly reducing the likelihood of a steertube failure. I did end up swapping the end wedges from the ENVE version - they are lower profile, so didn't change the stack height on my stem setup. But it was an easy swap - all threading and basic construction was the same.
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