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Shimano RD-TY21 7Spd (Direct)

The Shimano RD-TY21 7-Speed is an alloy replacement rear derailleur.


    The Shimano RD-TY21 7-Speed is an alloy replacement rear derailleur.


      We continually work to improve our products so designs and specifications are subject to change. Please contact us to confirm if you have any questions.


      Free shipping is currently available to most of the Australian mainland (includes Tasmania) addresses on orders over $75 - including bikes. Reid Cycles subside shipping costs to all other Australian addresses so you get the best deal.

      • Receive free shipping on orders over $75 (including bikes) to most mainland & Tasmanian addresses
      • Shipping to all other areas is subsidised by Reid
      • Shipping to remote island locations can be calculated at checkout or call customer service for an estimate on (03) 9314 9199
      • Click and Collect pickup options are always free for all products

      Areas with a shipping surcharge:

      Shipping of bikes is currently free to most of the Australian mainland and Tasmania. Due to the high costs of postage and on-forwarding for large items to remote island locations, however, these areas will incur a surcharge (Reid subsidise all shipping but cannot cover it all in all cases). The surcharge will be applied to your cart during the checkout process.

      For more information, please call our customer service team on (03) 9314 9199

      We do not ship outside of Australia. If you live overseas and would like to buy a Reid bike please visit our international website to view a list of retailers.

      Estimated dispatch & shipping times:

      Orders for items that are currently in stock are usually dispatched within 1 to 2 working days (business days only). You'll receive an email with tracking information once the order has been dispatched. Delivery times can vary depending on the size of the items ordered, with bulky goods taking longer than smaller items. Please note, some orders may be subject to a security check prior to being dispatched which may cause a delay. The below delivery estimates are calculated from the time of purchase:

      • VIC: 3-6 business days
      • NSW: 4-7 business days
      • SA: 4-7 business days
      • QLD: 4-7 business days
      • NT, Nth QLD: 6-9 business days
      • WA, TAS: 7-10 business days
      • Other rural/remote destinations: 7-14 business days

      Click & Collect - In-store pickup:

      Collection from one of our stores is always free! When collected in-store, your bike comes fully assembled by an experienced Reid Cycles mechanic, adjusted and ready to go.

      The store will receive your order, assemble your bike and give you a call within 2-5 days advising when your bike can be picked up. Whenever possible, we recommend collection in store. See full details on Click and Collect here.


      Remember that bikes are shipped boxed, and 85% assembled. The final assembly required includes the installation of the handlebars, front wheel, pedals and saddle, adjusting the brakes and tuning the gears. We recommend that the assembly is done by a qualified bike mechanic or another suitably qualified person. Damage caused by an incorrect assembly (such as installing the pedals the wrong way around) is not covered by your warranty.

      Please see our 'How to guides' for assembly instructions if you do choose to assemble a bike yourself.

      Delivery method:

      It's always best to send to an address that always has someone in attendance, such as a business address. You may also want to give our courier an 'authority to leave' instruction. Only give us an 'authority to leave' if you're confident that the delivery will be safe. Otherwise, the courier can leave a 'sorry we missed you' card, allowing you to arrange re-delivery.

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