Rear Wheel Set | live price, prepared checkout

Built for shopping agents: what RoboTrunk does for every product

We asked shopping agents, including Meta's Muse first-hand, what they need from a store. This is what they asked for, and what we have built.

RoboTrunk is working through its catalogue, so a step may not be done for this one yet. Where a step is done per product, the line ends with what is done for this product.

• Deep research: We read the maker's manual, independent reviews, video review transcripts and the store's own page, and publish each finding with its source and the date read. check_product returns them with a source for each. This product: 15 checked facts, research depth trimmed read, checked 2026-10-12T15:36:35.471Z, in the evidence pack.
• Receipts: Every published fact has a receipt showing its source quote. check_product and get_product return the checked facts that have one. This product: each checked fact listed below has one; the source quotes are in the evidence pack.
• Safety: check_product asks the product-safety regulators live (US CPSC, NHTSA and FDA, Health Canada, the UK's OPSS, Australia's ACCC) whether a recall names a product, listed here or not, and flags a match with its notice; a recall never blocks the buyer. This product: this page holds no recall result for it yet; check_product asks the regulators now.
• Recall watch: watch_recalls tells the buyer if a product bought here is recalled later.
• Second-hand listings: check_listing runs the same recall check on a second-hand listing someone found, and adds what the listing leaves out and the price new.
• The real price: The full price to the buyer's country, with shipping and tax, each part quoted from the store's policy or, where a part is not settled, what the total depends on: check_product and search_catalog take the buyer's country and postcode. This product: this store's price was read from its catalogue at 2026-10-18T19:33:40.395Z.
• A checkout that finishes: RoboTrunk lists only stores whose agent checkout it has verified. create_checkout prepares the order at the store; complete_checkout returns a link to the store's own checkout. The checkout can be finished in either of two ways: the person taps the link in their own browser, or their agent opens it and completes the checkout. RoboTrunk checks the store's total against a budget ceiling before it issues the link. Payment always happens on the store's own page, and RoboTrunk never holds the money. No store pays for placement; RoboTrunk may earn a commission from some stores via their affiliate programs.
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• Fit answers: check_fit answers whether a listing fits a car, pram or bottle, with the exact quote from the store's page, or says it is not known.
• Back-in-stock watches: watch_back_in_stock starts a watch on a listing the store shows as sold out; get_back_in_stock_watch shows when it is back in stock.
• Maker's manual: ask_product_manual answers from the maker's manual with the exact passage and page, or says the manual does not cover it.
• Tools and guide: Every tool and its description is at https://robotrunk.com/mcp; the guide is at /agents.md.
• Research from other stores: Coming soon: reading other stores' listings of the same product as research sources.

Checked facts

Each fact below was checked against the source it cites before it was published. Each carries that source's link and the time RoboTrunk read it. 15 checked facts, checked 2026-10-12T15:36:35.471Z. Research depth: trimmed read. Deep read: the store's own data and 6 outside pages (the store's own product page; maker page; manual; spec sheet; regulator recall search (CPSC (United States)); regulator recall search (Health Canada)), each read in full by RoboTrunk and trimmed to its main content, then written up and checked. Facts from the maker or a manual quote the page word for word; what real users report is summarised with a link to the page read. Recall status was checked directly with CPSC (United States), Health Canada: Both regulator sources read (the CPSC recall search for Mockingbird and the Health Canada recall open data) returned no recall records for Mockingbird or this Rear Wheel Set, so no recall applies to this model.

• what it is: This is a set of two replacement rear wheels, the same wheels that come included with all Mockingbird Strollers.. Source: https://mockingbird-prod.myshopify.com/products.json (listing), read 2026-10-11T07:21:21.154Z.
• category: The maker files this item as a Replacement Part.. Source: https://mockingbird-prod.myshopify.com/products/universal-rear-wheel (guide), read 2026-10-12T15:18:44.461Z.
• what's included: The replacement includes two Rear Wheels, and nothing else is listed as included.. Source: https://hellomockingbird.com/products/universal-rear-wheel (guide), read 2026-10-12T15:19:14.246Z.
• installation: Fitting a rear wheel is a push-in job: the rear wheel post pushes into the wheel housing.. Source: https://help.hellomockingbird.com/how-do-i-attach-lock-and-detach-my-wheels-HJXprS81i (manual), read 2026-10-12T15:19:26.786Z.
• dimensions: Rear wheels are about 9.5 inches in diameter, measured across the centre from edge to edge, while front wheels are about 7 inches.. Source: https://help.hellomockingbird.com/what-are-the-mockingbird-stroller-wheel-sizes-Bk22swfkWe (manual), read 2026-10-12T15:19:37.399Z.
• recall: The CPSC recall search for Mockingbird and the Rear Wheel Set returned no recall records.. Source: https://www.saferproducts.gov/RestWebServices/Recall?format=json&Manufacturer=Mockingbird (guide), read 2026-10-12T15:19:39.641Z.
• recall: The Health Canada recall data held no records mentioning Mockingbird.. Source: https://recalls-rappels.canada.ca/sites/default/files/opendata-donneesouvertes/HCRSAMOpenData.json (guide), read 2026-10-12T15:19:40.058Z.
• sku: The listed SKU for the set is RP_ST_2_2.. Source: https://mockingbird-prod.myshopify.com/products.json (listing), read 2026-10-11T07:21:21.154Z.
• barcode: The structured product data gives the set a GTIN of 080213105327.. Source: https://mockingbird-prod.myshopify.com/products/universal-rear-wheel (guide), read 2026-10-12T15:18:44.461Z.
• compatibility: The Rear Wheel Set is stated to be compatible with all Mockingbird Strollers.. Source: https://hellomockingbird.com/products/universal-rear-wheel (guide), read 2026-10-12T15:19:14.246Z.
• removal: To take a rear wheel off, press the button on the back of the wheel housing and pull the wheel outward.. Source: https://help.hellomockingbird.com/how-do-i-attach-lock-and-detach-my-wheels-HJXprS81i (manual), read 2026-10-12T15:19:26.786Z.
• compatibility: Front and rear wheels are not interchangeable, and the measurements given are wheel diameter, not tyre width.. Source: https://help.hellomockingbird.com/what-are-the-mockingbird-stroller-wheel-sizes-Bk22swfkWe (manual), read 2026-10-12T15:19:37.399Z.
• weight: The structured product data lists a weight of 0 lb, which reads as an unset weight rather than a real measurement.. Source: https://mockingbird-prod.myshopify.com/products/universal-rear-wheel (guide), read 2026-10-12T15:18:44.461Z.
• returns: It is a final-sale item: replacement parts are not eligible for returns or exchanges.. Source: https://hellomockingbird.com/products/universal-rear-wheel (guide), read 2026-10-12T15:19:14.246Z.
• brake: The stroller is braked by pressing the pedal at the centre of the brake bar away from you.. Source: https://help.hellomockingbird.com/how-do-i-attach-lock-and-detach-my-wheels-HJXprS81i (manual), read 2026-10-12T15:19:26.786Z.

The full evidence pack, with every citation, source and gap.

Questions we researched but could not confirm

Every fact above is cited. To find them we read the store listing, the maker's page, the manual, the spec sheet and the recall records of CPSC (United States) and Health Canada and searched for regulator recall notices, owner reviews, blogs, owner forums and video reviews. We also chased the questions below across those sources and found no reliable answer, so you know exactly where the evidence ends and never have to guess.

• Are the tyres solid foam or pneumatic?
• What does each rear wheel weigh?
• What are the tyre and hub made of?
• Do the wheels come with axles or mounting hardware?
• Is this wheel set compatible with the Mockingbird Travel Stroller?
• Does it fit Mockingbird strollers from earlier generations?
• What is the maximum load the rear wheels support?
• What is the tyre width?
• Does the set include the brake bar or brake assembly?
• How should the wheels be cleaned and cared for?
• Is there a warranty on this replacement part?
• Will these fit a double Mockingbird stroller?
• What colour and finish are the wheels?
• Do these wheels have bearings or suspension?

This page is published by RoboTrunk, a store built for shopping agents.

The store named on this page sells the product and ships it. RoboTrunk is not
the seller and never holds the money.

Buying works in one path. RoboTrunk's tools prepare a checkout at that store,
then hand back a short-lived link. The person approves the total; once RoboTrunk
has checked the store's total against it, the person is given the checkout link to
tap in their own browser, or, if the person prefers and gives permission, their
agent may open the link and finish there, and payment always happens on the
store's own checkout page. RoboTrunk never takes the payment or sees a card.

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