Sakae/Ringyo (SR) Alero  (Report Pending)
Main Photo
Category:  Cranksets
Name:  Sakae/Ringyo (SR) Alero
Brand:  Sakae/Ringyo (SR)
Years:  N/A
Country:  Japan
Added By: jPrichard10 on 11/22/14
Updated By: jPrichard10 on 11/24/14
Additional Photos - click for full size
Sakae/Ringyo (SR) AleroSakae/Ringyo (SR) AleroSakae/Ringyo (SR) AleroSakae/Ringyo (SR) Alero
 Verify Component Photos
Chainring CountDoubleBCD 50.4mm
BB StylePedal Threads9/16" x 20 (English)
BB Length Flutes None
Lengths 170Arm/Spider MaterialAluminum Alloy
Front MarkingsALERO Cold ForgedBack MarkingsDuralumin Forged 170
Extractor Threading   
General Information
Reported By:Ray155
Report Date:7/11/2019
Report Reason:Incorrect Content, Chainrings Triple (3 ea. Al Alloy)
Outstanding Report Submitted  
Additional Resources
Resources:Reference & ChartsCatalogsGear Calculator
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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