Do all Nuna car seats use the same base?

Nuna PIPA Aire RX installed in a car

All Nuna infant car seats (with the exception of the PIPA Urbn) can use the same two bases. Some models come with the standard Nuna base, and others come with the RELX base. The PIPA Urbn does not come with a base and cannot be used with one.

Discontinued models such as the PIPA, PIPA Lite, PIPA Lite R, PIPA Lite LX and PIPA Lite RX—work with both the standard and RELX base as well. 

Depending which Nuna car seat you choose, it will come with either the original PIPA base or the newer and more adjustable RELX base. 

The current Nuna PIPA models that will come with the RELX base are the PIPA RX and PIPA Aire RX. Any model with an "RX" at the end comes with the RELX base. Currently only the PIPA Aire comes with the original PIPA base. It is sold at select retailers only. 

When purchasing additional infant car seat bases separately for other vehicles, you can choose from either the PIPA or RELX base—no matter which base was included in the box originally with your car seat.

Learn more about the differences between bases in this PIPA vs. RELX base comparison.

Compare the differences between current Nuna infant car seat models—Nuna PIPA RX, PIPA Aire RX, and PIPA Urbn—in the video below:

Can you use the Nuna PIPA RX and PIPA Aire RX without a base?

These current and discontinued Nuna infant car seats can be used with or without the base:

If you're traveling or taking a ride-share, you don't need to bring the base with you, as the above seats (plus the PIPA Urbn) can be installed using only the vehicle seatbelt.

Can you use the Nuna PIPA Lite, PIPA Lite R or PIPA Lite LX without a base?

These seats are now discontinued, but three of the four Nuna PIPA Lite models (excluding the PIPA Lite RX) cannot be used without the base. If you have these models, you'll need to install the car seat using the base every time:

  • Nuna PIPA Lite (discontinued)
  • Nuna PIPA Lite R (discontinued)
  • Nuna PIPA Lite LX (discontinued)

While these models are some of the lightest Nuna car seats, the drawback is that they lack the belt guide components needed to install the seats with only a seatbelt. If you want lightweight with the ability to install without a base, check out the Nuna PIPA Aire RX.

If you travel frequently or live in a city where taxis and ride-shares are common, the PIPA Urbn may be perfect for you! 


Does the Nuna PIPA base work with the Nuna RAVA or EXEC car seats?

Unlike the Nuna PIPA series of infant car seats, the Nuna RAVA and EXEC, which are convertible and "all-in-one" options respectively, do not come with a detachable base. 

No convertible car seats use bases like infant car seats do. Because they are much larger and heavier, a convertible car seat like the RAVA or EXEC will stay installed in your car.

Compare the differences between the Nuna EXEC and RAVA in this blog post.

Do all Nuna car seats use the same base?

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