DESCRIPTION
The Shimano GRX RX820 12-speed rear derailleur is designed for gravel use with 2x drivetrains and a wide-range road bike cassette. It has quiet, reliable shifting and excellent chain security. RD-RX820 is compatible with 34 and 36 teeth on the largest cassette sprocket. It also features Shadow Plus technology, an integrated chain stabiliser, which prevents the chain from slapping on rough surfaces and thus counteracts chain drop. The function can also be switched off when you are riding on smoother roads or when you want to remove the wheel.
Features
Mechanical rear derailleur for gravel bikes with 2x12-speed setup
Safe and quiet shifting on mixed surfaces
Smooth and reliable gear changes
Adjustable chain stabilisation prevents chain drop
Stabiliser with on/off switch to adapt to the terrain and for easy wheel removal
Flat design prevents getting stuck on obstacles
Painted cage plates
Derailleur Pulleys: 13 tooth (bottom, tension pulley), 11 tooth (top, idler pulley)
Derailleur pulley bearings
Weight: 270g
Compatibility:
Shift/Brake Lever: ST-RX820, ST-RX610, ST-R7120
Cassette: CS-R8101-12 (11-34 only), CS-R7101-12, CS-HG710-12
Chain: CN-M8100, CN-M9100, CN-M7100, CN-M6100
PLU: 74134
SIZE INFORMATION
SHIPPING & DELIVERY
Free Shipping
We offer free shipping on orders over $99 NZD*. Orders under this threshold incur a flat rate of $7.20**
*Excludes large or bulky items, which are charged between $25.00 and $100.00, depending on size, weight, and delivery location. Shipping is calculated at checkout.
**Rural delivery surcharge: An additional $6.00 is applied to rural addresses.
Click & Collect
Prefer to pick up your order? Select Click & Collect at checkout and collect from any Pushbikes store. Note: Some items may take 1 to 3 days to transfer between stores and up to 12 days for certain brands if the item is coming from our supplier. We'll notify you when your order is ready.
Delivery Time Frames
In-Stock Items:
For items in stock at our stores, expect delivery within 2 to 3 business days of order confirmation. Orders placed after 3pm will be processed the following business day. Please allow an additional 2 days for rural delivery.
From Supplier
Items shipped directly from our suppliers are usually dispatched within 5–7 business days. Some may take up to 12 business days, depending on the supplier. Estimated delivery times and stock location are shown for each product page above the add to cart button. Rural deliveries may take an extra 2 days.
Tracking Information
You'll receive a tracking number by email as soon as your order has been dispatched. If you haven’t received tracking details within your expected delivery window, please contact us to confirm.
Shipping Bikes
Bikes cannot be shipped due to brand warranty and dealer policies. All bikes, including electric bikes, must be collected in store fully assembled. If you're unsure, feel free to contact us before ordering.
Processing of bikes for 'click & collect' can take up to 7 days if they need to be shipped from our suppliers or assembled in-store.
Returns and Warranty
For information about returning a product or submitting a warranty claim, please see our Returns and Warranty Policy here.
Questions
If you're unsure about shipping rates or have any questions, get in touch with us with any questions.
REVIEWS & QUESTIONS
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