Car seat adapters for twin and double strollers
Which car seat adapters work with a twin or double stroller?
Mountain Buggy Nano Duo Twin Car Seat Adapter: Accommodates 2 car seats. Compatible with Mountain Buggy Protect, Phil & Teds alpha, Maxi-Cosi Cabriofix, Pebble Plus, Mico, Peg Perego Primo Viaggio 4-35, Peg Perego Primo Viaggio 30/30, Cybex Aton, Aton 2, Aton Q, Nuna Pipa, Graco Snugride 35, Snugride Clickconnect 35 and Chicco Keyfit. For use on the Mountain Buggy Nano Duo. Baby Monsters Car Seat Adapter: Both the Right-Upper and Lower-Left adapters are required to fit two car seats on the chassis. The adapter is only for Maxi Cosi and Cybex car seats. Fits Easy-Twin 2.0, 3.0 and 3.0S strollers. Valco Baby Ark Car Seat Adapters (A0325) / Ark Multi Seat Car Seat Adapters, Joey Seat Adapter (A0326): The adapters let the stroller hold one or two car seats, for infant plus toddler or twins Compatible with Maxi Cosi, Nuna, Cybex and Clek car seats joovy Twin Roo+ Maxi Cosi/Cybex Carseat Adapter: Users say the kit includes adapters for two car seats at once. Joovy lists this as a TwinRoo+ adapter fitting Maxi Cosi and Cybex seats; this disagrees with the review's claim that it accepts only Maxi-Cosi seats. The store data describes the TwinRoo+ as a frame stroller for two infant car seats that works differently from other twin frame strollers, and says the adapter fits Maxi Cosi/Cybex car seats. Valco Baby Ultra Duo S2 Car Seat Adapters: megababiesusa-com says the Twin Adapter Kit includes one Maxi-Cosi/Nuna/Cybex adapter and one Universal adapter, and that two of the same won't work; bambibaby-com and strolleria-com say the Twin Adapter Kit includes two Universal adapters. The Maxi-Cosi/Nuna/Cybex Adapter is compatible with most US models of these brands. The adapters are made for the Ultra Duo S2 stroller.
| Product | Why | Two-seat use | Car seat brands | Stroller fit |
|---|---|---|---|---|
| 1. Mountain Buggy Nano Duo Twin Car Seat Adapter sold by megababiesusa.com | Accommodates 2 car seats. | Accommodates 2 car seats. listing | Compatible with Mountain Buggy Protect, Phil & Teds alpha, Maxi-Cosi Cabriofix, Pebble Plus, Mico, Peg Perego Primo Viaggio 4-35, Peg Perego Primo Viaggio 30/30, Cybex Aton, Aton 2, Aton Q, Nuna Pipa, Graco Snugride 35, Snugride Clickconnect 35 and Chicco Keyfit. listing | For use on the Mountain Buggy Nano Duo. listing |
| 2. Baby Monsters Car Seat Adapter sold by megababiesusa.com | Both the Right-Upper and Lower-Left adapters are required to fit two car seats on the chassis. | Both the Right-Upper and Lower-Left adapters are required to fit two car seats on the chassis. guide | The adapter is only for Maxi Cosi and Cybex car seats. guide | Fits Easy-Twin 2.0, 3.0 and 3.0S strollers. guide |
| 3. Valco Baby Ark Car Seat Adapters (A0325) / Ark Multi Seat Car Seat Adapters, Joey Seat Adapter (A0326) sold by megababiesusa.com | The adapters let the stroller hold one or two car seats, for infant plus toddler or twins | The adapters let the stroller hold one or two car seats, for infant plus toddler or twins listing | Compatible with Maxi Cosi, Nuna, Cybex and Clek car seats listing | - |
| 4. joovy Twin Roo+ Maxi Cosi/Cybex Carseat Adapter sold by joovy.com | Users say the kit includes adapters for two car seats at once. | Users say the kit includes adapters for two car seats at once. review | Joovy lists this as a TwinRoo+ adapter fitting Maxi Cosi and Cybex seats; this disagrees with the review's claim that it accepts only Maxi-Cosi seats. guide | The store data describes the TwinRoo+ as a frame stroller for two infant car seats that works differently from other twin frame strollers, and says the adapter fits Maxi Cosi/Cybex car seats. listing |
| 5. Valco Baby Ultra Duo S2 Car Seat Adapters sold by megababiesusa.com | It converts the Ultra Duo S2 stroller into a complete travel system, letting an infant car seat move from car to stroller in seconds. | megababiesusa-com says the Twin Adapter Kit includes one Maxi-Cosi/Nuna/Cybex adapter and one Universal adapter, and that two of the same won't work; bambibaby-com and strolleria-com say the Twin Adapter Kit includes two Universal adapters. listing | The Maxi-Cosi/Nuna/Cybex Adapter is compatible with most US models of these brands. listing | The adapters are made for the Ultra Duo S2 stroller. listing |
Also cited in the text
- Valco Baby Ultra Duo S2 Car Seat Adapters, what it does: It converts the Ultra Duo S2 stroller into a complete travel system, letting an infant car seat move from car to stroller in seconds. listing
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Written 2026-10-18T03:44:48.161Z.
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