Skip to product information
1 of 8


Diono Radian 3QX

Diono Radian 3QX

Regular price $669.00
Regular price Sale price $669.00
Sale Sold out
Tax included.

The ultimate 3 across All-in-One car seat from birth to booster (4 – 120 lb / 1.8 – 54 kg). Featuring 3 stages of complete rear facing protection and all new Diono Safe+™ engineering to provide the next generation in car seat safety.

What's great about the Diono Radian 3QR?

  • You'll get 3 stages of car seat, from infant, through to toddler, through to booster. This means you don't need to purchase another seat later. You get 10 years in one car seat, with a max weight of 54kg.
  • It's well engineered and has been tested to rigorous crash testing, for your peace of mind around it's performance in an accident.
  • You can keep your child rear facing even longer - up to approx 4 years old.
  • Slim design will fit 3 across the back seat without compromising child or passenger comfort.

Diono 3QX

Safe+™ newborn travel high wedge Creates near lie-flat travel position for newborns while reducing head slump and helping to keep airways open. Simply remove as baby grows.

 Diono 3QX Infant Insert

Safe+™ 2-in-1 infant positioning liner Gives extra infant comfort and toddler body support. Simply remove as your toddler grows.

 Diono 3QX

Safe+™ steel anti-rebound bar One click connection to the seat base. Reduces rebound rotation by 50% in the event of a collision. Also provides more legroom when rear-facing. 

Diono 3QX Engineering 

Safe+™ engineering The new radian® 3QX is subjected to a combination of the most rigorous crash tests including rollover testing to make sure we have the safest seat possible.

 Diono 3QX

Safe+™ steel core All new upgraded steel core. Made from automotive grade high strength steel to shield and protect.

Diono 3QX Head Height

Safe+™ headrest Engineered with the latest European Side Impact technology to improve child head containment in the event of a collision. Headrest height is increased by 22% from radian R series.

Key Stats on the Diono Radian 3QR:

  • Rear-facing 4-50 lb / 1.8-22.7 kg
  • Forward-facing 22-65 lb / 10-29.5 kg
  • Booster mode 40-120 lb / 18-54 kg
  • Seated torso height 7.5-16.5″ / 19-42 cm
  • Overall maximum height up to 57″ / 144.8 cm
  • Weight of seat 25.8 lb / 11.7 kg
View full details