Shimano Crank Arm Fixing Bolt Ultegra 6800 105 5800 Sora R3000 OEM Part

This is a critical part of your bike and if it comes off you have a long walk home. Mine came off twice resulting in a 10 mile walk home. First time it came off the pedal detached long walk home. I bought the aluminum one here on AMAZON a year later while cycling that one came long walk home. Heres what you should know both were on tight but I ride a lot and the vibrations eventually caused them to loosen so you should buy the tool and check and tighten regularly to avoid this situation. Buy the one recommended for you bike because its aluminum don't mean its better this plastic one thread are longer and fits snugger than aluminum and handles vibrations better get a backup and the tool and keep with you when cycling . This is the best fit product the aluminum threading was shorter .;

if you cross thread your plastic bottom bracket cap/ fixing bolt this will replace it on the latest 11S Ultegra cranks.;

what i needed after stripping the old one;

Item arrived as described;

was a little longer than the fixing bolt that came with my 7800-series crank. This allowed me to better fit and use that crank for a front triple chainring.;