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Item # 51050-DIONO

Diono Radian RXT Convertible + Booster Car Seat - Graphite

Share Diono Radian RXT Convertible + Booster Car Seat - Graphite

Was $359.99
Save $110 31% Off

Other Options Available:

Coordinating Items
Diono Radian Carry Strap
Diono Car Seat Travel Bag
Include the Diono Radian RXT Convertible + Booster Car Seat - Graphite

Item # 51050-DIONO


Rear-facing Capacity: 5-45 lbs
Forward-facing Capacity: 20-120 lbs
Seat Weight: 26.15 lbs
Seat Dimensions:28.5 H x 17 W x 16 D

What's Included:

Cup holder

This product will:


Fit 3 Across

Fold for storage and travel

Machine wash and dry

Steel Frame

Full steel frame and aluminum reinforced sides for unmatched safety.

Fit 3 Across

Comfortably fits 3 across in most mid-size vehicles.

Fold & Go

Folds flat for storage and travel - you can even take it on the go with handy carry straps (sold separately).

FAA Certified

Travel-friendly and FAA certified for aircraft use!

Your child’s security is Diono's top priority. The Radian rXT was engineered with premium, innovative features like a steel alloy frame, aluminum reinforced sidewalls, energy absorbing EPS foam and a reinforced adjustable head support to keep your little one protected and comfortable.

The radian® rXT keeps children comfortably rear-facing from 5-45 pounds for the safest possible position. Premium, plush head and body support cushions are included for newborns and infants.

Accommodates forward-facing children up to 65 pounds in a 5-point harness and converts to booster mode for kids 50-120 pounds. The aluminum reinforced, adjustable head support and sidewalls provide additional side impact protection.

Diono convertible car seats are made from steel for safety you can feel. The fully integrated steel frame is wrapped in thick engineered plastic to withstand severe crash forces. Deep, aluminum reinforced sidewalls provide excellent side impact protection, while energy absorbing EPS foam surrounds your child for ultimate safety. Diono car seats are definitely worth the weight.

  • Premium, plush interlock knit fabric (available in Black Cobalt, Black Mist, Black Plum, Black Scarlet and Essex colors)
  • Full steel frame for unmatched safety
  • Comfortably seats rear-facing children from 5-45 pounds
  • Seats forward-facing children from 20-65 pounds in a 5-point harness
  • Converts to a booster for children from 50 pounds up to 120 pounds, and up to 57? tall – proper fit in booster mode
  • Unique SuperLATCH™ system makes installation easy
  • Fits 3-across in most mid-size vehicles while providing spacious interior for child
  • Folds flat for travel and is FAA certified
  • Infant body support cushions and memory foam add comfort
  • Aluminum reinforced sides with energy absorbing EPS foam additional side impact protection
  • Safe Stop® energy absorbing harness
  • 12-position adjustable headrest
  • 5 shoulder and 3 buckle positions adjust for a comfortable ride.
  • Rear-facing tether capability
  • Expandable sides and long seat bottom offer proper leg support
  • Low-sitting profile makes it easy for your child to board
  • Angled cup holder keeps drinks upright and within easy reach
  • Cover is machine washable
  • Rubber bottom grips for no-slip installation
  • 10 year life from the date of purchase

719 Reviews
74% (532)
20% (146)
3% (18)
2% (16)
1% (7)
92% Recommend this product (665 of 719 responses)
By Chris
Waukesha, WI
June 8, 2014
Great seat if you need to fit three car seats in one row
I have a four year old and twin 1 year olds. I originally bought two rear facing only seats for my twins (had to do some research to find three that would all fit in my car). Now that I moved my twins to forward facing I had to purchase another two seats for them that would fit along with the booster I have for my four year old. These seats are narrow enough to easily fit three across either forward facing OR rear facing. I have one fairy wide booster seat + two Radians and while its a bit tight, it easily works. I've also moved all three to different cars and it fit all of them without issues. If I had three Radians it would be even be easier (since my booster is a few inches wider than these seats). My kids like the seats, seem comfortable to them, and are easy to buckle them in with. I didn't try rear facing with the kids in them, but I put them in the car just to see and space was ok that was too. I currently have 10 car seats including my two Radians, and these are one of the easiest ones to install of the bunch. If you are looking to fit three kids in a standard car (I have a Tucson and an Altima), I would recommend going with these. My only regret is that I didnt purchase these originally instead of buying separate infant carriers.
Prosfits three across in a standard size vehicle (Camry, Fusion, Altima, etc). Rear facing OR front facing. Easy to install Easy to buckle children in Seems comfortable
Consnothing I've noticed
By ariel
November 8, 2017
best car seat
i love our diono. at one point all three of my kids needed carseats and we just bought a new grand cherokee and this carseat was perfect fitting in the car. its light weight and easy to install. i havent bought any other car seats for my kids since except all the dionos
By Dad of Twins. What's your Super Power?
Nova Scotia, Canada
October 12, 2017
Excellent comfort and protection for our twins
The seats we purchased were excellent and stayed that way as our daughters grew. Unfortunately due to an accident, we were forced to discard the seats. At this time, although we want to have replacements, we just cannot afford to lay out $800+ to purchase new ones.
* This product review was collected by the manufacturer.
By Jeremy
Frisco, TX
October 11, 2017
awesome car seat
This is an awesome car seat. It's easy to get on off the car and can be folded for travel/storage. The best features in my opinion is that 1. it has small foot print so so you literraly fit 3 Diono car seats in a regular sedan (camry). 2. even though it seems less bulky but it does not lack in comfort. 3. Solid build quality with steel/medal backbone.
October 5, 2017
Perfect for my child who is at the 100% for height & weight!
After installing the seat I complained that the straps should be longer. 'why don't they offer longer straps" I said. Guess what THEY DO!!!!!!!!!!!!!!!! Thank you Diono
* This product review was collected by the manufacturer.
By Meg
Alexandria, Louisiana
October 2, 2017
Diono always works!
We needed 3 across for our vehicles so of course Diono was the top of the list for seats that easily fit next to each other! They installed flawlessly, are super heavy and well made, they just never disappoint.
ProsSteel reinforced, comfortable, long lasting expiration, narrow, puzzles well next to other seats.
ConsForward facing belt path/install is tricky. Top tether buckle is in an awkward spot behind the seat.
By Deidre
Colorado Springs, Co
October 1, 2017
I got this as part if a sale at baby cotton bottoms. I've done extensive research on this seat since my son was born and I finally took the plunge after 18months. I regret not doing it sooner. I wished I could've gotten another one but as I save up I'm hoping to get another. I love the steel frame and I have a high suv and I'm a short mom so the construction of the seat makes it so much easier to get my son in and out. I highly recommend it.
* This product review was collected by the manufacturer.
By Meagan
September 15, 2017
Best price for excellent quality and safety.
I love this high end, incredibly safe car seat for my little one. So thankful to Albee for providing it at an affordable price!
By Tanille
September 14, 2017
Great seat for fitting three across
I love that it made it easy to fit three across in the car new car seats are cheaper than a new car.
Prosslim for fitting three across mid size vehicle.
By chad
St. Louis, MO
September 14, 2017
3 of these fit perfect in our 20120 Suby Outback! My daughter loves the purple.
By Crunchy Pittsburgh Mama
Pittsburgh, PA
September 12, 2017
I'm obsessed & want everyone to know about this company
This car seat makes every other car seat look and feel flimsy. It's so solid and secure, I have absolutely no complaints. I am a first-time mom and a medical professional, and there is absolutely no way I would ever let my child ride in any other car seat. We donated our Graco and bought a second Diono! #rearfacingforlife
* This product review was collected by the manufacturer.
By Jason
Cranbrook BC
September 8, 2017
So Close to perfect.
I have two of these seats, I have loved these seats. They are MASSIVE, and HEAVY, but narrow enough to fit three across. Unfortunately, some of the faults are critical. -The tightening buckle is on the seat side of the tether, instead of the clip side. -The equalization straps/triangle is up too high to work with truck anchors. -I need to sell the seats because they do not work with my new vehicle. Fault of Diono? or fault of ford? Quite irrelevant, Either way, the Best car seat on the market, is not designed to fit or work, with the most Common truck on the marked? I will be visiting our local diono dealer today, to inquire, But our local seat installation specialists, concur, If you own a truck with the anchors under the head rests, as nylon loops, YOU WILL NOT be able to use this seat. To everyone else, Best seat ever. (mostly fords fault) but still to not work with a major manufacturer is a HUGE fault) Even If I could tighten the seats, sharing that center anchor is not viable.
* This product review was collected by the manufacturer.
By Gillian
Niagara, Ontario
September 5, 2017
Quality that saves lives
I love my Diono Radian RXT. We were in a car accident, where we double-rolled into a ditch. Myself and my two boys, age 4 & 6, walked away with no injuries. The EMT said they were shocked and said the car seats helped save my boys from injury. I have 4, a pair in each car, and will be purchasing again for our newest child. I never questioned paying the price when it came to their safety, and after the accident, it was the best purchase. I wouldn't trust their life to another seat.
* This product review was collected by the manufacturer.
By Danny N Charlotte GAa rza
Sarepta, LA
September 3, 2017
Favorite is the Rainier in the Shadow color.
We need to replace our out dated car seat.
* This product review was collected by the manufacturer.
By Tigger0242
McLoud, OK
August 31, 2017
Best carseat for my kids
I bought the first one when my oldest grew out of her infant rear-facing car seat. Fell in love with the Diono and when I had to order another carseat for our second daughter I immediately knew this was the one for us. Only 2 complaints is that they discontinued the "Dayton" red design and the strap between the child's legs is quite short so it is a bit difficult to buckle child when they are about 30+ pounds.
* This product review was collected by the manufacturer.
August 26, 2017
Good product!It is comfortable for the rear facing to my child.
Good product!It is comfortable for the rear facing to my child.So we bought two of this item.We like it.
By Yvette
Richmond, Texas
August 24, 2017
Great car seat
Very compact and looking forward to being able to put 3 of these car seats straight across in my SUV. My 3 year old likes how comfortable it is. Color is as shown. Vweu well built.
By Lauren Ten Eyck
Tigard, OR
August 23, 2017
I love all the colors!
I love the dark blue!
* This product review was collected by the manufacturer.
By Mom on the run
Ludington, mi
August 23, 2017
My child loves it. We use it everyday. Wish I could afford more, so I could have one in both vehicles for both children.
* This product review was collected by the manufacturer.
By Valentina
Walla Walla, Washington
August 22, 2017
Just got this seat yesterday love everything about it and it's totally worth the money!
By Debra S
Fort Lauderdale , Florida
August 22, 2017
Perfect Seat
Bought this for my 5 & 3 1/2 year old grandsons. . Very easy to install. Compact in vehicle but roomy enough for my grandsons. Easy to use, the boys can buckle themselves in but need my assistance to unbuckle. Love the fact I can fit three of these across in my backseat so no one is left behind. Well built. A bit heavy to install but since it is stationary that is not a problem. A great carseat & nice looking.
ProsCan fit 3 across from birth to seatbelt use very safe
Best Usesdaily use
By Jana
Radcliff, KY
August 22, 2017
Car seat is great
I love my dionos! I have two!
* This product review was collected by the manufacturer.
By Ashley
Indian Harbour Beach Florida
August 21, 2017
Love this Carseat
Love his seat. We have bought 3 of them. One for all cars..
By Cori arbuckle
Hinesville ga
August 21, 2017
We love the purple!
We use it daily... she loves it
* This product review was collected by the manufacturer.
By Sumer
Mexico, MO
August 7, 2017
Own two!
I liked this for my third child so I ended up buying another for my fourth and will use one for the one I am expecting after he or she outgrows the infant seat- although this seat can be used form 5 lbs if that is the preference. It has higher weight and height limits than many similar seats allowing children to rear-face and use a 5pt harness longer for optimal safety. It is also easy to adjust the straps as it is in the front of the seat below the child's legs.
By Kara Gomez
August 6, 2017
Great carseat
Love this carseat, i feel my kids are safe
ProsSturdy, very narrow, confortable fabric
Best UsesKeep in 1 car if using the latch because it really stays put
By Danielle
Mystic, CT
August 6, 2017
Sturdy seat
Hard to put together and install but I love the low profile seats. Easy to get both my kids in one side until baby 3 comes!
ProsNarrow Low profile side
ConsHeavy Heard to Instal
By Mom of irish twins amd a teen
Kawartha lakes, Ontario
August 2, 2017
Awesome car seat!
LOVE our Diono RXTs, we have two. Our 7 and 8 year olds are both still in 5pt harness mode (they're light weigh rugrats at 50 and 54lbs and 48"/50" tall) they've had them for 4-5 years now. Roomy, comfortable and easy to clean. Only con is its a bit hard to tighten the harness line after years of use.
* This product review was collected by the manufacturer.
By Mark
San Francisco, ca
July 26, 2017
Great car seat
Very well construction, narrow and comfortable. We bought the angler foam pad which made a big difference. Well worth the $10.
By Michelle
July 24, 2017
Best UsesBABY
By Lorraine
Apex, North Carolina
July 24, 2017
These seats are great!!!!
We have 3 Grandchildren of different ages and all 3 seats fit in the back seat of my Toyota Corolla. My husband could set these up for each one's weight. I love that these can be used for years to come. I had priced them elsewhere and was pleasantly surprised at the prices at Albee Baby. We are very happy with our purchase and the the delivery time.
By Elisa
Houston, Texas
July 16, 2017
Best car seat for my 3 year old!
I was a little skeptical about this car seat when I first saw it but after reading reviews, I went for it and let me tell you, its so worth the money! We have a small car (Ford Fusion) so I wanted a good car seat for my three year old that would keep him save. Before this one, we had a Britax Marathon, I loved that car seat, but when I received this one, I instantly fell in love with it!. However, it is heavy, but I don't mind that at all because we do not take it out of the car. I highly recommend this car seat if you have a small car like me!
By Ryckman mom of 2
New Haven IN
July 16, 2017
Loved BUT hate.
Love this seat and we were hoping that it would be our last seat ever to purchase seeing how it has a 12 year life span. However my 38 lbs daughter at age 7 is 50'' and can no longer ride in the 5 point harness safely and will not adjust any higher. when switching to booster mode the seat belt will not retract correctly the headrest and the side of the seat is to tight of a fit for it to retract if she leaned forward for something. But she dose love this seat its comfortable and fits nicely in the 3 row when we need to put all 3 of them together.
* This product review was collected by the manufacturer.
By Laurie
Claverack, NY
July 15, 2017
Love it!
I'm so glad we went with Diono! It's slim but oh so durable and supportive.
ConsHeavier then most but I understand why!
By julia
Kalispell , MT
July 13, 2017
Cleans well
I bought this for its obvious safety ratings, but it also cleans very well which is a plus.
By Bronwyn
July 12, 2017
Best overall use
Great for all of my kids--7months, 3 years and 6 years! Safe and fits 3 across in our nannies camry.
By yawei
san diego, CA
July 5, 2017
good qaulity
It has very good qaulity. The steel frame inside is very firm,and it is good for travel.
Prossteel frame
Consvery very very heavy.
Los Angeles, CA
July 5, 2017
Not good for tall kids
This is a sturdy seat, and I can definitely see why it is so highly rated but it will only work to a certain point. We purchased a new car and I ordered 2 seats for my 2 kids (5yr old and 7 yr old) in hopes to get more room in the back seat. There aren't too many narrow car seats available and this car seat seemed to review well in that department. This didn't fit the bill for us and we ended up returning. My 5 year old (still in 5 point harness) fit this seat fine. However, my 7 year old didn't fit this seat, he was too tall and the head rest didn't adjust tall enough. I'd say this will work better for younger babies/kids...I ordered mine a little too late. My search for a narrow booster seat continues. I will say, coming from New Jersey to California - the shipping was fast! Thanks Albee Baby!
By Erin
Birmingham, AL
July 2, 2017
The Last Car Seat!
This car seat is the last one you will need. We had First Years Premiere 360 seats for both of our kids and really liked them, but they were so wide that it made it difficult to get around them to access the third row in our SUV. The Diono lives up to its slim fit billing. My kids (6&4) have so much more leg room just by switching to this seat. It is very heavy, so I would not recommend this seat if you plan on taking it in and out of the car regularly. My kids find the seat to be very comfortable. Although we are past the rear facing stage, I do love the high rear facing weight limit. I also like the higher weight limit for using the five point harness. This is definitely the last seat we will be buying for our kids. I only wish that I had been willing to spend the money when they were infants to get this car seat then.
ProsSlim fit Solid construction High limits for rear facing and five point harness use Capable of being used for all stages from infant through booster
ConsCrotch strap is a little short Pricey if you can't find a deal
By Carrie
Dallas, TX
June 29, 2017
Exactly what we wanted
My daughter loves the seat and it was easy to install. Read the manual. It's not a take from the box and install kinda seat because it has so many options.
By D. Irving
Atlanta, GA
June 26, 2017
Very nice and comfortable
We upgraded to this car seat for our 10 month old after long research. We felt confident going with Diono as reviews and test has proved this to be the safest car seat in the market. My daughter is extremely comfortable in this car seat and I really wish we could've gotten this from infant stage. It is very slim and nice looking. I gave it 4 stars because it is extremely heavy, but other than that I love it and recommend it to everyone.
By Krystie
June 24, 2017
Love it!
We are in love with this car seat we have a big boy and he is so happy in it. I recommend this product 100%
By Momma2three
Southern California
June 16, 2017
I have 3 and buy another
Bought these as each of my children have turned 1. Other then being on the heavy side I don't really have any complaints! They are a but challenging to install but once you get a feeling for the seat it's easy!
* This product review was collected by the manufacturer.
By Sandra
Crowley, Louisiana
June 15, 2017
Wonderful Product!
I love this carseat! It will adjust to fit my 2, 5, and 8 year old children. I had just ordered one, but plan to get more now! Great price, product, and shipping. Thank you Albee Baby
By C.M
June 10, 2017
My daughter is tall for her age. This car seat offers plenty of space and it doesn't look and feel so bulky.
By Julie
Baltimore, MD
June 8, 2017
Awesome seat!
We love these car seats! Kept our babies safe in a car accident and bought these to replace them. Easy to use!
By Collet
May 29, 2017
Love it
My kids love this car seat! So comfy, easy to clean and the kids don't complain! I can know fit in a third car seat in the same row! The only downfall for me is how heavy they are but I understand why they are. Totally recommend this car seat to everyone!
By Camillionaire
Ottawa, Ontario
May 25, 2017
I would not buy this car seat, or recomend it to others!
I purchased two (2) of the Radian RXT's approximately 3 years ago when both my children were still in the 5 point harness. I chose this model because it is advertised to last you through until booster seat age. This car seat was EXCELLENT when used as a car seat with the five point harness and well suited to babies and children 12 months to 4 years old. Once I removed the 5 point harness and converted (BOTH) my car seats to booster seats, I encountered the following problems: 1) the headrest does NOT extend high enough for a 6 year old (40 pounds) to fit in. 2) once the head rests on BOTH the booster seats were adjusted to the right height, they fall down and I have to fix them every single time I buckle my kids into their boosters. 3) My kinds complain that they are uncomfortable all the time, due to the head rest dropping bellow their shoulders. They are an absolute nightmare, and very unsafe once the headrest falls during long drives and it ends up behind my kids shoulders. I did call customer service, however they suggested tightening the bolts behind the head rests, this did not work. They still fall. I am now looking to replace them urgently.
* This product review was collected by the manufacturer.
By Kin
Chicago, illinois
May 19, 2017
Much better car seat!
We had a different model before and found that after using these life got a tiny bit easier. Installation was pretty straight forward and buckling is much easier! The best part is that we can fit three next to each other so it saves us having to commit to buying a new car!
By Kerrie Paras
Woodbridge, Virginia
May 19, 2017
Excellent Car Seat
We have used Diono car seats for over a year now and we love them. Especially great if you travel a lot and need to bring a car seat on the flight. Easy to travel with. We decided to upgrade our Diono to the Radian RXT. Very happy with is so far. We like having the headrest for our now 2 yo son. Previously we had the Diono Radian 100 and we love that one too.

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