Shimano authorised Crank Inspection and Replacement program at Cycling Boutique - 2023

What is it all about?

Shimano has launched a voluntary inspection and replacement program for some bonded 11-speed HOLLOWTECH II road cranksets produced before July 2019 for a possible bonding separation issue.

Shimano South East Asia (“Shimano”), in authorisation with Cycling Boutique Inc, being the premium contact point for Shimano products and services in India, will starts an inspection and replacement program of selected bonded 11-speed HOLLOWTECH II road cranksets produced between June 1, 2012, up to and including June 30, 2019, for a possible bonding separation issue. This service is available for Bengaluru, India location at Cycling Boutique's well popular workshop and store at 80 Feet Road, Bengaluru.

This specifically concerns the Shimano ULTEGRA FC-6800, DURA-ACE FC-9000, ULTEGRA FC-R8000, DURA-ACE FC-R9100 and FC-R9100-P 11-Speed Bonded HOLLOWTECH II Road Cranksets in Europe. Reports received by Shimano indicate that the bonded parts of the crank arm could separate and break, posing potential fall and injury hazards to consumers.

To remedy this situation, Shimano will have any applicable crankset inspected. Shimano will replace any crank arm that fails the inspection process.

This inspection is designed to determine whether the crank arms show a possible bonding separation issue and to swiftly remove any possible safety hazard to Shimano's consumers. Not all ULTEGRA and DURA-ACE cranksets need to be inspected.  Only cranksets produced between June 1, 2012, up to and including June 30, 2019, need to be inspected. The way to identify if a crankset should be inspected is provided in the WHAT TO DO section below.

Shimano will replace any cranksets that fail the inspection process free of charge.


Reports received by Shimano indicate that the outer cover of the crank arm may start to separate from the main crank arm body, posing potential fall and injury hazards to consumers.



To know if this process applies to customers crankset, please follow the instructions in STEP 1.

STEP 1 - Determine whether your crankset needs to be inspected

STEP 1A – Identify the model number of your crankset

The affected products are DURA-ACE and ULTEGRA branded cranksets with the following model numbers: ULTEGRA FC-6800, FC-R8000 and DURA-ACE FC-9000, FC-R9100 and FC-R9100-P. The model numbers are stamped on the inside of the crank arm near the bottom of the arm (see yellow square in the image below).


Does the model number on your crank arm match the model numbers above?

  • NO: The crankset is not affected, and no further action is needed.
  • YES: Proceed to STEP 1B.





STEP 1B – Identify the manufacturing code stamped on your crank arm

A manufacturing code is stamped on the inside of the crank arm near the bottom of the arm (see the blue square in the image above). The affected models are pre-July 2019 production and have the following two-letter production codes: 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, and RF.


Does the manufacturing code on your crank arm match any of the two-letter productions codes above?

  • NO: The crankset is not affected.  No further action is required.
  • YES: Proceed to STEP 2.

Consumers who believe they have an affected product are asked to contact an authorized Shimano dealer to schedule a free crankset inspection. If you are unsure of how to check the manufacturing code visit your local Shimano dealer. Please see the CONTACT section below for instructions on how to contact Shimano for assistance.

Consumers with cranksets that do not fall within the specified model number and manufacturing codes do not need to take further action. Please proceed to STEP 3.

STEP 2 – Take the bicycle to the dealer for inspection

If you are a consumer in Bengaluru, India, please contact Cycling Boutique's Shimano Inspection Program help line number: +919538949110 to receive detailed instructions on how to proceed with the inspection. 

Shimano has developed the crankset inspection process and will provide clear instructions and tutorials for dealers. Shimano anticipates that the inspections will be possible starting from NOVEMBER, 2023. Further details will be announced shortly via and

Cycling Boutique will inspect the crankset for signs of bonding separation or delamination. 

Consumers whose cranksets show signs of bonding separation or delamination during the inspection will be provided a free replacement crankset from Shimano that the dealer will professionally install. If your crankset needs replacement following the inspection, please do not use it. If a replacement crankset is temporarily unavailable, Shimano will notify you through your dealer when the replacement is ready.

The replaced crankset will be a special version, which may feature a different cosmetic appearance while maintaining the same level of performance.

Ultegra FC-6800Ultegra FC-6800
Ultegra FC-R8000Ultegra FC-R8000

Dura-Ace FC-9000Dura-Ace FC-9000
Dura-Ace FC-R9100Dura-Ace FC-R9100

Dura-Ace FC-R9100PDura-Ace FC-R9100P

STEP 3 – Ride safely and continue to maintain your bicycle/equipment

If your crankset passes the inspection and has no signs of delamination, Shimano appreciate your patience and diligence in having the inspection completed. Please continue to enjoy your ride.

Have your bike tuned up and inspected regularly, ask your dealer for recommendations based on your riding habits. Pay attention to changes in the sound and feel of how your bike is riding. Shimano urges all users to thoroughly read the user manual provided with the product (and available online at: to ensure safe usage and proper maintenance. 

Shimano encourages all riders to maintain their bicycle and riding equipment diligently.  




Please note that no other Shimano cranksets are affected by this voluntary inspection program.


Figure 1. Image of the cranksets that might be subject to inspection:



How to Apply ? - Use the following form to quickly apply and reach us:


Some DURA-ACE and ULTEGRA 11 speed HOLLOWTECH II road cranksets with bonded construction manufactured prior to July 2019 have received warranty returns for bonding separation and reported falls and injuries. Shimano want to ensure the safety of Shimano's customers by implementing this Crankset Inspection Program.

First validate if your crankset is part of the cranksets inspection program. Second, Shimano ask you to take it to your local retailer to get inspected. 

Link to Dealer Locator: 

ULTEGRA FC-6800, FC-R8000, DURA-ACE FC-9000, FC-R9100, and FC-R9100 P manufactured prior to July 2019.

Please work with your local retailer to submit. Shimano will be working with our retail partners to execute this process and that will allow for the most consistent tracking and overall levels of service.

To see if your product needs to be inspected, the model number and production code are stamped on the inside of the crank. Please refer to the announcement document for the location of this information.

Shimano will have any applicable crankset inspected by an authorized Shimano retailer.  Please visit the dealer locator for a Shimano dealer near you. Shimano will replace any cranks that fail the inspection process.


Link to Dealer Locator: 

The new crankset uses the latest construction and bonding techniques. There will be slight cosmetic differences from the original crankset. In some cases the exact specification may not be available. 

Cranks and/or any Shimano products that are modified by third parties are not covered by warranty, but as an exception they will be subject to this inspection. Any items that are found to fail during inspection and that are sent back to Shimano will be replaced free of charge without the 3rd Party Power Meter attached.


However, an additional payment, based on the market average along with the replacement crankset, can be used to purchase and mount a new third-party power meter on a replacement crankset.

Shimano encourage all riders to maintain their bicycle and riding equipment diligently.  Have your bike tuned up and inspected regularly (ask your retailer for recommendations based on your riding habits). Pay attention to changes in the sound and feel of how your bike is riding. Changes could indicate wear out, breakage, or need for adjustment to some part of your bike.

Shimano will do our best to expedite the replacement crankset. However, with all the different chainring and crankarm length combination Shimano may not have your crankset in stock. If a replacement crankset is temporarily unavailable, Shimano will work with the retailer to communicate and confirm when the replacement is ready.

Yes. As a reminder, Shimano recommend a general bike safety check before each ride (Tire Pressure, Quick Releases, and Basic Visual Inspection). 
For your safety, Shimano will provide the initial and second inspection free of charge through an Authorized Shimano Retailer.  
Shimano recommend that the second inspection be performed about one year after the initial inspection. If you feel, hear, or see a change in your crankset, please take it to an Authorized Shimano Retailer at any time.