Sakae/Ringyo (SR) SR
Main Photo
Category:  Stems
Name:  Sakae/Ringyo (SR) SR
Brand:  Sakae/Ringyo (SR)
Model:  SR
Years:  Late 1970's - Mid 1980's
Country:  Japan
Weight:  310 grams (Spec)
Added By: John Sinclair on 12/02/18
Updated By: John Sinclair on 12/02/18
Additional Photos - click for full size
Sakae/Ringyo (SR) SRSakae/Ringyo (SR) SRSakae/Ringyo (SR) SR
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MaterialLight AlloyMarkingsOn left and right side of the extension the "SR" raised in an oval. Below MAX line on right side - "SR" logo size in mm, and 5355 JAPAN and on left side a circle with date code two digit year and letter for month.
Bar Clamp Size 25.4Quill Size 22.0 and 22.2
Expander Style WedgeExpander Bolt Size
Binder Bolt Size   
General Information
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Additional Resources
Resources:Reference & ChartsCatalogs
Brand Information(click to expand)
Date of Manufacturing / Production Code for SR seatposts (at least for the 80's):
The date of prodcution of SR (Laprade) seatposts is shown around the min.insert line as follows:
"letter"-"double digit number", e.g. F-81 oder L-81, while the letter should be the month and the number will be the year of production.
So F-81 seems to be June 1981 while L-81 would indicate December 1981.
(in-line with the code 1 examples on

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