Name: GRX RD-RX810/RX812 11-Speed Rear Derailleurs
Brand: Shimano
SKU: IRDRX812
Price: 169.99 CAD
Availability: InStock

GRX RD-RX810/RX812 11-Speed Rear Derailleurs

$159.99

Frais d'expédition calculés lors du passage à la caisse.

Loading shipping policy…

Returns & Exchanges Policy

Loading returns policy…

Chain Wrap Capacity (teeth)

Largest Cog

En stock
En rupture de stock, expédition prochainement

UPC / SKU

UPC: 192790448886
SKU: IRDRX812

Checking availability…

Vérifier la disponibilité dans d'autres magasins

Multiple Financing Options

FREE SHIPPING on eligible orders over $150

Secure checkout

[{"id":47909561925819,"title":"40 \/ 34","option1":"40","option2":"34","option3":null,"sku":"IRDRX810","requires_shipping":true,"taxable":true,"featured_image":{"id":55395705454779,"product_id":8341510095035,"position":1,"created_at":"2026-10-16T21:26:51-04:00","updated_at":"2026-10-16T21:26:53-04:00","alt":null,"width":2048,"height":2048,"src":"\/\/thebikezone.com\/cdn\/shop\/files\/RD0604.jpg?v=1792200413","variant_ids":[47909561925819]},"available":true,"name":"GRX RD-RX810\/RX812 11-Speed Rear Derailleurs - 40 \/ 34","public_title":"40 \/ 34","options":["40","34"],"price":16999,"weight":422,"compare_at_price":null,"inventory_management":"shopify","barcode":"192790448879","featured_media":{"alt":null,"id":46395446263995,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2048,"width":2048,"src":"\/\/thebikezone.com\/cdn\/shop\/files\/RD0604.jpg?v=1792200413"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":47524387651771,"title":"31 \/ 42","option1":"31","option2":"42","option3":null,"sku":"IRDRX812","requires_shipping":true,"taxable":true,"featured_image":{"id":55395705487547,"product_id":8341510095035,"position":2,"created_at":"2026-10-16T21:26:51-04:00","updated_at":"2026-10-16T21:26:53-04:00","alt":null,"width":2048,"height":2048,"src":"\/\/thebikezone.com\/cdn\/shop\/files\/RD0605_23e24ee0-bf05-45c7-bdfd-43492bd7997a.jpg?v=1792200413","variant_ids":[47524387651771]},"available":true,"name":"GRX RD-RX810\/RX812 11-Speed Rear Derailleurs - 31 \/ 42","public_title":"31 \/ 42","options":["31","42"],"price":15999,"weight":431,"compare_at_price":null,"inventory_management":"shopify","barcode":"192790448886","featured_media":{"alt":null,"id":46395446296763,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2048,"width":2048,"src":"\/\/thebikezone.com\/cdn\/shop\/files\/RD0605_23e24ee0-bf05-45c7-bdfd-43492bd7997a.jpg?v=1792200413"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}]

{"id":47524387651771,"title":"31 \/ 42","option1":"31","option2":"42","option3":null,"sku":"IRDRX812","requires_shipping":true,"taxable":true,"featured_image":{"id":55395705487547,"product_id":8341510095035,"position":2,"created_at":"2026-10-16T21:26:51-04:00","updated_at":"2026-10-16T21:26:53-04:00","alt":null,"width":2048,"height":2048,"src":"\/\/thebikezone.com\/cdn\/shop\/files\/RD0605_23e24ee0-bf05-45c7-bdfd-43492bd7997a.jpg?v=1792200413","variant_ids":[47524387651771]},"available":true,"name":"GRX RD-RX810\/RX812 11-Speed Rear Derailleurs - 31 \/ 42","public_title":"31 \/ 42","options":["31","42"],"price":15999,"weight":431,"compare_at_price":null,"inventory_management":"shopify","barcode":"192790448886","featured_media":{"alt":null,"id":46395446296763,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2048,"width":2048,"src":"\/\/thebikezone.com\/cdn\/shop\/files\/RD0605_23e24ee0-bf05-45c7-bdfd-43492bd7997a.jpg?v=1792200413"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}

GRX RD-RX810/RX812 11-Speed Rear Derailleurs $159.99

Chain Wrap Capacity (teeth): 31

Largest Cog: 42

Checking pickup availability

The Shimano GRX 11-speed rear derailleur has an integrated chain stabilizer mechanism, that provides a quieter experience, shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an ON/OFF switch for the chain tensioner. The Shimano Shadow RD+ adjustable chain stabilizer provides silent and uninterrupted rear shifting on rough terrain. For 1x drivetrains 42t low sprocket max / 11t top sprocket max

Bicycle shipping is a flat $100.

Standard ground shipping within Canada is free on eligible orders over $150. Bicycles are subject to the bicycle shipping rate.

Exceptions may apply to oversized or overweight items and deliveries to remote or rural locations. Additional shipping charges may apply.

Review the shipping charges shown at checkout before placing your order.

Read full Shipping & Delivery Policy

Request deadline: Within 7 days of receiving your bike or 14 days of receiving other items.
Condition: Brand-new, never used, and in original packaging. Bikes must be never ridden.
Final sale: Sale and special-order items cannot be returned or exchanged. A discount code on a regular-price item does not make it final sale.
Return deadline: Approved items must reach us within 7 days of approval.
Processing fee: 5% of the amount paid for returned items, excluding taxes and shipping, is deducted from your refund—even for returns brought to a store.
Shipping: You pay return shipping or may bring approved returns to either store. Original delivery charges are non-refundable.
Start a return: Submit our Online Orders Support form and wait for approval before returning anything.

Read full Returns & Exchanges Policy

For answers to frequently asked questions, visit our FAQ page.

Need help or have a question? Contact Us by email, phone or come see us in person - we’re always happy to help.

GRX RD-RX810/RX812 11-Speed Rear Derailleurs

Product Specifications

missisauga store

barrie store

online orders support