Replacement 2nd Seat Kit Adapters Set | live price, prepared checkout

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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. 27 checked facts, checked 2026-10-12T16:07:50.099Z. Research depth: trimmed read. Deep read: the store's own data and 8 outside pages (the store's own product page; maker page; manual; blog; 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: A CPSC recall search for Mockingbird returned one record that was an error with no product, hazard or recall named, and the Health Canada recall data listed no records mentioning Mockingbird. No recall applying to this exact adapter set was found.

• what it is: The item is a set of replacement upper and lower adapters for the adapters included with a Mockingbird 2nd Seat Kit.. Source: https://mockingbird-prod.myshopify.com/products.json (listing), read 2026-10-11T07:21:21.154Z.
• sku: The structured product data lists the SKU as RP_ST_17_5.. Source: https://hellomockingbird.com/products/replacement-2nd-seat-adapters-set (guide), read 2026-10-12T15:37:57.962Z.
• installation of upper adapters: The upper adapters are pushed into the right and left joints with the white button facing outward.. Source: https://cdn.shopify.com/s/files/1/0023/9691/3753/files/MB_SecondSeatKit_IM_DIGITAL_M2901D01.1.pdf?v=1707266752 (manual), read 2026-10-12T15:38:02.484Z.
• manual availability: Mockingbird's help centre hosts the 2nd Seat Kit instruction manual as a downloadable PDF.. Source: https://help.hellomockingbird.com/2nd-seat-kit-SJXyK7PFt (manual), read 2026-10-12T15:38:31.742Z.
• fit with older strollers: The second seat kit does not fit the older single Mockingbird stroller: the bar holding the basket under the seat sits where the second seat adapter needs to clip on.. Source: https://celebratingwithkids.com/mockingbird-double-stroller-review/ (blog, Celebrating with kids), read 2026-10-12T15:38:42.508Z.
• conversion steps: Converting the stroller to a double is described as moving the first seat up with the upper adapters and then attaching the second seat with the lower adapters.. Source: https://themodernmindfulmom.com/mockingbird-double-stroller-review-everything-you-need-to-know/ (blog, themodernmindfulmom.com), read 2026-10-12T15:38:48.843Z.
• listing type: The store lists the item as a replacement part that is final sale.. Source: https://mockingbird-prod.myshopify.com/products.json (listing), read 2026-10-11T07:21:21.154Z.
• gtin: The structured product data lists the GTIN/barcode as 080213111243.. Source: https://hellomockingbird.com/products/replacement-2nd-seat-adapters-set (guide), read 2026-10-12T15:37:57.962Z.
• installation of lower adapters: The lower adapter has a black release button on its inside that opens a hinged door which is clasped around the frame.. Source: https://cdn.shopify.com/s/files/1/0023/9691/3753/files/MB_SecondSeatKit_IM_DIGITAL_M2901D01.1.pdf?v=1707266752 (manual), read 2026-10-12T15:38:02.484Z.
• manual date: The help centre page carries the date March 30 2024.. Source: https://help.hellomockingbird.com/2nd-seat-kit-SJXyK7PFt (manual), read 2026-10-12T15:38:31.742Z.
• identifying your model: Owners can tell whether they have the single or double stroller by squatting and reading the sticker on the bar inside the basket, which reads either MOCKINGBIRD STROLLER or MOCKINGBIRD DOUBLE STROLLER.. Source: https://celebratingwithkids.com/mockingbird-double-stroller-review/ (blog, Celebrating with kids), read 2026-10-12T15:38:42.508Z.
• brand and vendor: The vendor of the item is Mockingbird.. Source: https://mockingbird-prod.myshopify.com/products.json (listing), read 2026-10-11T07:21:21.154Z.
• product category: The structured product data classifies the item as a Replacement Part.. Source: https://hellomockingbird.com/products/replacement-2nd-seat-adapters-set (guide), read 2026-10-12T15:37:57.962Z.
• locking check: After fitting, pull upward on the upper adapters to confirm they are securely locked onto the stroller frame.. Source: https://cdn.shopify.com/s/files/1/0023/9691/3753/files/MB_SecondSeatKit_IM_DIGITAL_M2901D01.1.pdf?v=1707266752 (manual), read 2026-10-12T15:38:02.484Z.
• weight: The structured product data gives the item's weight as 0 lb.. Source: https://hellomockingbird.com/products/replacement-2nd-seat-adapters-set (guide), read 2026-10-12T15:37:57.962Z.
• warning: Upper adapters must never be stacked on top of the lower adapters; both must be attached in their proper locations when using the 2nd Seat Kit.. Source: https://cdn.shopify.com/s/files/1/0023/9691/3753/files/MB_SecondSeatKit_IM_DIGITAL_M2901D01.1.pdf?v=1707266752 (manual), read 2026-10-12T15:38:02.484Z.
• single stroller conversion: It is reported that the ordinary single stroller cannot be converted to a double at all; the Single-to-Double Stroller model must be bought.. Source: https://themodernmindfulmom.com/mockingbird-double-stroller-review-everything-you-need-to-know/ (blog, themodernmindfulmom.com), read 2026-10-12T15:38:48.843Z.
• what is included: The set contains upper adapters that raise the 1st seat to make room for the 2nd, and lower adapters that attach the 2nd seat.. Source: https://hellomockingbird.com/products/replacement-2nd-seat-adapters-set (guide), read 2026-10-12T15:37:57.962Z.
• when to buy: The adapters are already included with the 2nd Seat Kit and only need buying as a replacement pair.. Source: https://hellomockingbird.com/products/replacement-2nd-seat-adapters-set (guide), read 2026-10-12T15:37:57.962Z.
• choking hazard: Assembly is required by an adult because of small parts, which must be kept away from children under 3 years.. Source: https://cdn.shopify.com/s/files/1/0023/9691/3753/files/MB_SecondSeatKit_IM_DIGITAL_M2901D01.1.pdf?v=1707266752 (manual), read 2026-10-12T15:38:02.484Z.
• design change: Adapters from 2nd Seat Kits bought before April 2021 may look different because the design was changed to allow more arrangements.. Source: https://hellomockingbird.com/products/replacement-2nd-seat-adapters-set (guide), read 2026-10-12T15:37:57.962Z.
• tipping prevention: When loading, the upper seat should always be loaded before the lower seat to avoid tipping.. Source: https://cdn.shopify.com/s/files/1/0023/9691/3753/files/MB_SecondSeatKit_IM_DIGITAL_M2901D01.1.pdf?v=1707266752 (manual), read 2026-10-12T15:38:02.484Z.
• compatibility: The adapters fit the Mockingbird Single-to-Double Stroller model and are not compatible with the Single Stroller model.. Source: https://hellomockingbird.com/products/replacement-2nd-seat-adapters-set (guide), read 2026-10-12T15:37:57.962Z.
• brake use: The brake should always be engaged before loading and unloading to prevent tipping.. Source: https://cdn.shopify.com/s/files/1/0023/9691/3753/files/MB_SecondSeatKit_IM_DIGITAL_M2901D01.1.pdf?v=1707266752 (manual), read 2026-10-12T15:38:02.484Z.
• recommended use: Mockingbird says families who plan to stroll with two stroller seats should buy the full 2nd Seat Kit rather than the adapters alone.. Source: https://hellomockingbird.com/products/replacement-2nd-seat-adapters-set (guide), read 2026-10-12T15:37:57.962Z.
• seat installation: Each seat is pushed into its adapters until it clicks into a fully locked position, and lifting the seat confirms it is locked.. Source: https://cdn.shopify.com/s/files/1/0023/9691/3753/files/MB_SecondSeatKit_IM_DIGITAL_M2901D01.1.pdf?v=1707266752 (manual), read 2026-10-12T15:38:02.484Z.
• returns: Replacement parts such as this item cannot be returned or exchanged.. Source: https://hellomockingbird.com/products/replacement-2nd-seat-adapters-set (guide), read 2026-10-12T15:37:57.962Z.

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, blogs and the recall records of CPSC (United States) and Health Canada and searched for regulator recall notices, owner reviews, 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.

• What material are the upper and lower adapters made of?
• How much does the replacement adapter set weigh?
• What colour and finish are the adapters?
• Do the adapters fit the seat from the older pre-April 2021 kit?
• Is the replacement adapter set covered by any warranty?
• What tools, if any, are needed to fit the adapters?
• How long do the adapters last before they crack or loosen?
• Can the replacement adapter set be used with the Single Stroller model?
• Does the set come with instructions or fixings?
• Are the adapters compatible with the Mockingbird bassinet or car seat adapter?
• Has the stroller passed any official safety standard or certification?

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