# Car seat adapter weight limits What is the maximum weight a car seat adapter can hold? Valco Baby Ark Car Seat Adapters \(A0325 and A0326\): With adaptors, the Ark is rated for a car seat up to 28\.5 lbs\. Mountain Buggy Nano Duo Twin Car Seat Adaptor: The manual's step for attaching a car seat gives a maximum load of 13 kg \(28 lb\) when using one infant car seat, and notes that the car seat and adaptor are sold separately\. Bugaboo Butterfly 2 Car Seat Adapter: Maximum child weight per car seat on the stroller is 13 kg \(28\.6 lbs\)\. ### 1. [Valco Baby Ark Car Seat Adapters \(A0325 and A0326\)](/products/ucp/megababiesusa-com/9000234483966) (sold by megababiesusa\.com) With adaptors, the Ark is rated for a car seat up to 28\.5 lbs\. - Weight limit: With adaptors, the Ark is rated for a car seat up to 28\.5 lbs\. (guide) - Car seat fit: A0325 is the Ark car\-seat adaptor for compatible Maxi\-Cosi, Nuna, Cybex and Clek car seats\. (guide) - Safety note: Only the positions shown in the manual are tested and recommended as safe; adapters must not be used in other positions with approved Ark accessories\. (manual) ### 2. [Mountain Buggy Nano Duo Twin Car Seat Adaptor](/products/ucp/megababiesusa-com/7438517993726) (sold by megababiesusa\.com) The manual's step for attaching a car seat gives a maximum load of 13 kg \(28 lb\) when using one infant car seat, and notes that the car seat and adaptor are sold separately\. - Weight limit: The manual's step for attaching a car seat gives a maximum load of 13 kg \(28 lb\) when using one infant car seat, and notes that the car seat and adaptor are sold separately\. (manual) - Car seat fit: Compatible car seats listed by the maker are Mountain Buggy protect, phil&teds alpha, Maxi\-Cosi Cabriofix / Pebble Plus / Mico, Peg Perego Primo Viaggio 4\-35 and Primo Viaggio 30/30, Cybex Aton / Aton 2 / Aton Q, Nuna Pipa, Graco Snugride 35 and Snugride Clickconnect 35, and Chicco Keyfit\. (guide) - Safety note: Before each use the buyer must check that the car seat attachment devices are correctly engaged on the buggy\. (manual) ### 3. [Bugaboo Butterfly 2 Car Seat Adapter](/products/ucp/megababiesusa-com/8904241250558) (sold by megababiesusa\.com) Maximum child weight per car seat on the stroller is 13 kg \(28\.6 lbs\)\. - Weight limit: Maximum child weight per car seat on the stroller is 13 kg \(28\.6 lbs\)\. (manual) - Car seat fit: The store page lists compatible infant car seats: Bugaboo Turtle One and Turtle Air by Nuna, several Nuna PIPA models, Maxi\-Cosi Coral XP, Mico XP, Mico 30 and Mico Luxe\+, Clek Liing, several Cybex Aton and Cloud models, and Kiddy Evolution Pro2\. (guide) - Safety note: Always apply the stroller brake when placing the car seat on the stroller\. (manual) Every value in the table is a fact RoboTrunk checked, linked to the page it came from\. A dash means no checked fact fills that cell\. Prices and stock change, so this page prints neither: each product name links to its RoboTrunk page, which shows them live\. Written 2026-10-23T01:40:18.574Z. 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. Where the rest of this site is: - /agent/story.md is what RoboTrunk is and how it works, in full. - /agent/tools.json is every tool, its arguments and its answers. - /agent/merchants is every store you can buy from through RoboTrunk. - /products/ucp is every store's indexed products. - /products/search is one search across every store, in plain words. - [What RoboTrunk is](/agent/story.md) - [Every tool, in your browser through WebMCP](/agent) - [The tools and how to call them](/agent/tools.json) - [The stores you can buy from](/agent/merchants) - [Every store's products](/products/ucp) - [Search every store at once](/products/search)