Nitto Hi-Crown
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Category:  Stems
Name:  Nitto Hi-Crown
Brand:  Nitto
Model:  Hi-Crown
Years:  Mid 1960's - Late 1970's
Country:  Japan
Weight:  277.5 grams (avg)
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Added By: vxpro on 02/27/08
Updated By: Don Buska on 09/10/17
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Nitto Hi-CrownNitto Hi-CrownNitto Hi-CrownNitto Hi-CrownNitto Hi-CrownNitto Hi-CrownNitto Hi-Crown
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MaterialAluminumMarkingsNitto Handle Works Ltd.
Bar Clamp Size 25.4Quill Size 22.2
Expander Style Wedge or ConicalExpander Bolt Size12mm Bolt or 6mm Allen
Binder Bolt Size 12mm Hex bolt  
General Information
Several versions of this stem exist.  Expander bolt came in early 12mm hex head and later flush 6mm Allen head.  Based on pictures of the Fuji S10-S bikes that used this stem from 1971 through 1976 the change to the Allen head occurred with the 1975 model.  Later S10-S's changed to an entirely different Nitto stem.   

Expanders also varied from the wedge to conical versions.  See photo for examples.

From a Japanese based ebay sale: "Nitto no longer have the moulds for these stems so they will never be re-issued."
Quality:Rarity:
 
 
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Additional Resources
Marketplace:Looking to buy one of these?Sell one like this
Resources:Reference & Charts
Brand Information(click to expand)
NITTO's handlebars, handlebar stems and seat pillars for track races are certified for use in official Japanese KEIRIN races.  In addition to its already highly acclaimed handlebars, handlebar stems and seat pillars, the company now develops other bicycle parts made of metal tubes, such as frames, carriers and various accessories at its factories in Fukushima.

Date of foundation : 1923
President : Akira Yoshikawa
Employees : 50
Headquarters : 3-23-7 Minami, Hatogaya, Saitama 334-0013, Japan
Major products : Handlebars & stems, seat pillars, carriers, etc.
Tel : +81-48-286-7771
Fax : +81-48-286-7770
E-mail : nitto@violin.ocn.ne.jp
Website : http://www16.ocn.ne.jp/~nitto210/
Recent Catalog: http://www.jbpi.or.jp/english/JBG/JBG2010_2011/JBG2010_2011_NITTO.pdf
 
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WeightSourceNotesAdded By
271 GramsActual70mm Hexhead Extender Bolt Ver. Don Buska
284 GramsActual90mm Allenhead Extender Bolt Ver Don Buska
Modolo
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