According to Shimano, "the bonded parts of the crank arm can detach and break" in the affected versions. More specifically, the cover is said to detach from the main body of the crank arm, "which poses a potential risk of falling and injury". The Japanese company therefore launched a free replacement programme.
Affected road cyclists can have their cranks inspected by authorised dealers - probably from 1 October. Shimano will replace any crank arm that fails the inspection. About the exact Modalities of the exchange programme The shifting specialist has not yet provided any details. Shimano explains the procedure in a video tutorial.
Hollowtech cranks from Dura-Ace and Ultegra from the production period between 1 June 2012 and 30 June 2019 are eligible for the recall. The following models may be affected, the corresponding model number is printed on the inside of the crank arm.
- Ultegra: FC-6800
- Ultegra: FC-R8000
- Dura-Ace: FC-9000
- Dura-Ace: FC-R9100
- Dura-Ace: FC-R9100-P
In addition, the two-digit manufacturing code must match the following abbreviations. This can also be found on the inside of the crank arm in the last line of the model designation next to the information for the crank length. The affected models were manufactured before 2019.
- KF, KG, KH, KI, KJ, KK, KL
- LA, LB, LC, LD, LE, LF, LG, LH, LI, LJ, LK, LL
- MA, MB, MC, MD, ME, MF, MG, MH, MI, MJ, MK, ML
- NA, NB, NC, ND, NE, NF, NG, NH, NI, NJ, NK, NL
- OA, OB, OC, OD, OE, OF, OG, OH, OI, OJ, OK, OL
- PA, PB, PC, PD, PE, PF, PG, PH, PI, PJ, PK, PL
- QA, QB, QC, QD, QE, QF, QG, QH, QI, QJ, QK, QL
- RA, RB, RC, RD, RE, RF
Cranksets that show signs of the described defect during inspection will be replaced free of charge by the specialist dealer. If a replacement is not available, Shimano will inform you as soon as the new crankset is available. The Japanese company also points out that the replaced crankset is a special version, "which may have a different appearance with the same performance".
Julian Schultz
Editor
