Video
Installing a Star Nut or Compression Plug in a Threadless Headset
Cycling
Installing a Star Nut or Compression Plug in a Threadless Headset
Park Tool›
Jun 17, 20256:1250.8K views
What holds a threadless headset together? Many things, chief among them a star nut or an expansion plug in the steering column. This video walks through the process of installing a star nut and expansion plug in your threadless headset system.
Other repair help videos about Bicycle Headsets will be releasing soon, !
Questions or comments? Leave them below!
Video Contents:
00:00 Intro
00:41 Star Nut
01:43 Star Nut Installation
04:36 Expansion Plug
05:20 Expansion Plug Installation
Find a text-based version of this procedure here: parktool.com/blog/repair-help
➤ Tools & materials used:
• TNS-1 Threadless Nut Setter - parktool.com/en-us/product/threadless-nut-setter-tns-1
• TNS-4 Deluxe Threadless Nut Setter - parktool.com/en-us/product/deluxe-threadless-nut-setter-tns-4
• HMR-4 21 oz. Shop Hammer - parktool.com/en-us/product/shop-hammer-hmr-4
• PRS-3.3-2 Deluxe Single Arm Repair Stand - parktool.com/en-us/product/single-arm-professional-work-stand-prs-3-3-2
➤ .youtube.com/user/parktoolcompany?sub_confirmation=1
➤ Like: facebook.com/parktool
➤ Follow: instagram.com/parktoolblue
➤ Fix It:
Did you know that Park Tool is the #1 resource for bicycle repair education?
• Visit our YouTube Channel: youtube.com/parktool
• Visit the Repair Help section of Parktool.com: parktool.com/repairhelp
• Check out The Big Blue Book of Bicycle Repair: parktool.com/product/big-blue-book-of-bicycle-repair-4th-edition-bbb-4
➤ About Park Tool:
Since our founding in 1963, Park Tool has been the leading name in bicycle tools. Our YouTube channel is an extension of our mission to be the ultimate resource for mechanics and riders of all skill levels. Here you will find comprehensive repair help tutorials for a wide range of components and processes, as well as troubleshooting guides, tips and tricks, and information on the latest Park Tool products.
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"Installing a Star Nut or Compression Plug in a Threadless Headset" is a cycling video from Park Tool published on June 17, 2025. Runtime 6 minutes · 50,760 views. Topics: park tool. Spot Sports collects Cycling highlight videos, podcast episodes, and live coverage from across the web so every conversation stays in one feed. Follow Cycling on Spot Sports to get the next highlight, scoring update, and podcast appearance pushed to your home feed. If you want to watch Cycling live, Spot Sports' watch-cost calculator maps your zip code to the cheapest legal way to stream every game without paying for tiers you don't need.
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