Thomson 1.5" Stem Top Cap
Thomson 1.5" Stem Top Cap
Top cap for Thomson X2 and X4 1.5" Inch threadless stems when no spacer is used above the stem, may also be used with Elite stem. Beautifully CNC machined like all of Thomson's fine stems and seatposts.
Top Features of the Thomson 1.5" Stem Top Cap
- For use with Thomson X2 and X4 1.5" Inch threadless stems
A bicycle headset attaches the fork to the frame, they consist of bearings and races which allow the forks steerer to move within the frames headtube. There are a few types of headset, these are threaded and ahead. Threaded headsets are the older type and use a thread on the forks steerer to adjust, an ahead type has no thread and uses a top cap to adjust the tension. Ahead headsets come in three options, external cup, internal and integrated. Integrated and internal headsets use bearings which fit inside the headtube and provide clean lines, whereas the external cup system uses cups which fit into the frame but are still visible. Most will use cartridge bearings which last well and have very low maintenance requirements, one thing worth doing is to switch the top and bottom bearing periodically, as the bottom bearings are more prone to wear as they support the weight of the bike and rider.
About the Thomson brand
Their mission: “Throughout The Centuries There Were Men Who Took First Steps Down New Roads Armed With Nothing But Their Own Vision”
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