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Shimano Dura-Ace FC-R9100 Inner Chainring

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The smallest ring up front is critical if you're going to be going up that mountain pass, and for replacing a worn sprocket and improving your connection and pick up when shifting down onto the lower gears, the Shimano Dura-Ace FC-R9100 Inner Chainring 34T-MS for 50-34T is perhaps the ideal replacement part.

Anodized and with a durable aluminium construction, this chainring attaches to your crankset using a 110mm bolt circle diameter and uses a 4-arm asymmetrical setup for supreme rigidity and stiffness. Compatible with 11-speed setups and for use exclusively in 34/50 tooth chainset systems, this is a neat and precision engineered option for taking on the road ahead.

A Hollowglide construction for vastly improved weight savings, the tooth shaping on this chainring assures you of a quick engagement and a neat pickup, allowing you to forge ahead with the assurance that your replacement part will work at the same rate as your original part.

  • Suitable For 10/11 Speed
  • BCD: 110mm , 4-Arm
  • Material: Aluminium
  • Weight: 27g (34T)
  • Compatibility: 34T(MS) For 50T(MS) / 36T(MT) For 52T(MT) / 39T(MW) For 53T(MW) / 42T(MX) For 54T(MX) / 42T(MX) For 55T(MX)
  • Does not include Chainring Bolts 
Return Policy

Please email for returns, defects or order issues. Do not contact our chat support.

Final Sale

Items marked Final Sale are not returnable for any reason.  If there is a problem with your order please send an email to

Our Policy

To provide our customers with the flexibility and confidence to shop online, our return policy is 30 days. If opened, items must be defective or unused, and returned with original undamaged packaging to be eligible for a refund. All returns must be pre-approved via our return centre before being shipped back to our warehouse or returned in person to our 2205 West 1st location in Vancouver. Refunds can take up to 7 days to process and are reflected on your method of payment. Refunds will only be issued once the product is received, inspected, and approved by our receiving team. The amount will be refunded to the original form of payment and, in some circumstances, we may charge a restocking fee or refund to store credit. The date on which you placed your order is used to determine the return time frame.

Returns, not exchanges.

We do not offer exchanges. If you are looking for another size or colour, place a new order through our website, and then visit our return centre.

Shipping and Fulfilment

Order Fulfilment, Delivery, and Local Pick-up:

In-stock orders will be ready for pickup within 24-48hrs. Please wait for confirmation email prior to pickup.

In-stock orders will be shipped within 24-48 hours of placement.

For local pick-up, we will contact you when your item is ready. Please bring a copy of your order confirmation and identification when you pick up your order.

Shimano Dura-Ace FC-R9100 Inner Chainring - Shimano