I have the Street F135/R14. What does the F and R mean? Donna Post January 19, 2017 18:54 Updated Kryptonite uses the following naming structure: F-14 F=Front 14=Lumen R-3 R=Rear 3=Lumen Related articles Finding My Key Number Where on my bicycle should I mount the FlexFrame-U Bracket? Choosing Your Motorcycle Lock Interior U lock Measurements - "Lockable Space" What is COB? Comments 0 comments Article is closed for comments.
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