Choosing whether to buy Diono Radian R120 or Diono Radian RXT is likely to be tricky. Here’s a quick snapshot of how the two compare, followed by some more detailed exploration of each point.
Diono Radian R120 vs Diono Radian RXT

Diono Radian R120

Diono Radian RXT

Spec Comparison of Diono Radian R120 and Diono Radian RXT

Diono Radian R120 Diono Radian RXT
Our rating: Our rating:
Type
All-In-One Convertible Car Seat Convertible Car Seat
Color Options
Twilight, Essex Blue, Midnight, Shadow, Black scarlet, Black mist, Black plum, Essex
Child Weight Min – Rear Facing
5 lbs
5 lbs
Child Weight Max- Rear Facing
45 lbs
45 lbs
Child Weight Max- Forward Facing
20-80 lbs 20-80 lbs
Child Standing Height
44″ or less
44″ or less
Child Seated Shoulder Height Min – Rear Facing
Child Seated Shoulder Height Max – Rear Facing
Child Seated Shoulder Height – Forward Facing
Shoulder Width
14″
14″
Inside Hip Width
Inside Seat Depth
13″
Inside Seat Height
External Widest Point
17″
17″
Type of Harness
5 points,energy absorbing EPS foam and provide excellent side impact protection 5-point energy-absorbing harness
Lowest Harness Position
10.5″
9″
Highest Harness Position
17.”
17.5″
Expiration Date
8 years as harness: 10 years as booster 10 years
Car Seat Weight
26 lbs
22 lbs
Car Seat Height
28.5″
28.5″
Car Seat Width
17″
17″
Car Seat Depth
16″
Features
  • The Diono Radian family of car seats are the only all-in-one car seats with a full steel frame, making them one of the safest car seats available today
  • Grows with your child: rear-facing from 5-45 lbs., forward-facing from 20-80 lbs. (up to 57″) in a 5-point harness, and booster mode up to 120 lbs.
  • Aluminum reinforced sides, energy absorbing EPS foam and Safe Stop harness system for additional safety
  • Infant body support cushions and memory foam for added comfort
  • Folds flat for travel and fits 3 across in most mid-sized vehicles, perfect for growing families
  • The Diono Radian family of car seats are the only all-in-one car seats with a full steel frame, making them one of the safest car seats available today
  • Rear facing 5 to 45 pounds. Forward facing 20-80 pounds (up to 57″) in 5-point harness. Booster to 120 pounds
  • Infant body support cushions and memory foam for added comfort
  • Adjustable headrest with reinforced sidewalls. Infant body support insert is tucked under the seat.
  • Lined with EPS foam and energy-absorbing harness system for added safety
  • Folds flat for travel and fits 3 across in mid-sized vehicles

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    Diono Radian R120 vs Diono Radian RXT

    Diono Radian R120 vs Diono Radian RXT