Britax Frontier 85 Harness Booster Car Seat Red Rock

This item is discontinued.
The new Britax Frontier? 85 Combination Harness-2-Booster? boasts best-in-class forward-facing five-point harnessed weight capacity up to 85 pounds with an industry-leading 20 inch shoulder harness height. The seat also serves as a vehicle belt-positioning booster up to 120 pounds. Featuring True Side Impact Protection? with one-hand adjustable harness height system, Versa-Tether® and engineered energy management zones, the Frontier 85 is designed to be the safest high capacity seat in the industry. Loaded with comfort and convenience features, such as comfort foam, integrated cup holders and fixed armrests, the Frontier 85 is the ideal seat for the child graduating from their convertible car seat without compromising safety.

Superior Energy Management

Product Reviews
out of 5.0
10 Reviews
Ratings Snapshot
of Reviewers
CA, San Jose
Verified Buyer
Great seat for toddlers@@
February 16, 2012
I ordered the black/ red one for my 2.5Y boy to match our new black SUV car. It fits well and easy for little one to hop on by himself. It's lower than regular baby carseat. So we don't have to raise him very high to the seat anymore. I really like the shape of the design and trust every details for the safety on Britax. If you pay more attention and install this carseat carefully, I can say there is no other booster brand can beat this one.
  • Great color and very sturdy.
Buffalo, NY
Verified Buyer
February 13, 2012
Highly recommend this seat, excellent safety features and crash rating
  • Safety features, comfortable, cupholders, side impact protection
  • Not sure it will last my daughter as long as we'd hoped because my daughter is so tall for her age ( 4 and 43 inches)
Verified Buyer
Love this seat
February 1, 2012
Got this for my 3 year old. It's great and he loves the red and black. It's versatile and strong and he'll be in it for a long time! My first Britax. We've had Evenflo, EddieBauer, safety 1st...and the install was easy. I didn't use the latch, just threaded the seat belt. I got a tighter fit that way.
California M.
San Diego
Verified Buyer
Great combo chair
January 24, 2012
We have used Britax from birth with 2 kids. Started with a convertible carseat, then moved into this one. Easy to adjust and the cupholders are very versatile - they fit everything from snack bowls to Klean Kanteens (plus favorite 'treasures').
  • Everything! My 3 and 5 year olds were in a very serious accident and these carseats have a lot to do with the fact that they are still alive. After the accident I bought the Frontier 85 SICT to replace these.
  • Wish the padding on the base of the carseat was a tiny bit thicker.
Crested Butte, CO
Verified Buyer
Frontier car seat
January 21, 2012
Love it, so does my grandson. Unlike some other carseats, I feel like he is SAFE in this seat. And he loves the cup holders!
Verified Buyer
Fit for a King
December 28, 2011
We had a Britax Boulevard for my son and once he reached the RF weight limit we bought him this. He loves it and feels like a big boy!
  • Safety ratings
  • Ease of use
  • Ease of installation
  • Color
  • Cup holders
  • Sturdy feeling
  • Haven't found anything yet
A F.
United States
Comfortable, Easy to install!
July 31, 2011
We've had our Frontier 85 for less than a week and my 4 year old has fallen in love with it. He loves both side cup holders, the armrest and of course that he can easily buckle and unbuckle himself up with no problems! It took a little practice, but now he enjoys doing it "all by himself". Just one word....Fantastic!
Chicago, Illinois
Still in use with 9yro, and will go to his sister thanks to 9yr expirey!!!
February 8, 2011
BEST VALUE EVER!!! Whether you buy it to use as a convertible seat (post rear-facing convertible), or purchase this as Extended Harnessing/Excellent booster, you will ADORE this seat!!! The 9yr expirey means you can hand it down child to child and really get every bit of your money's worth, too. The low profile makes it an excellent fit in smaller sedans as well as larger SUV's and such. We've travelled with this, as well, with NO issues either on the plane or in the rental cars/airport, etc. I would NEVER put my children in ANYTHING BUT BRITAX!!! EVER!!! This makes an EXCELLENT booster, unlike the Graco Nautilus, as well... Please note incorrect info in review above: this is NOT LATCH Useable/Compatible to 85lbs. LATCH compatibility depends on YOUR CARS REGULATIONS. It varies manufacturer to manufacturer... but when in doubt, cease using LATCH at 40lbs!!! Please note, this does NOT apply to LATCH used in booster mode. LATCH in booster mode is acceptable regardless of weight of child.
  • SAFETY FEATURES, LOW PROFILE, colors/fabrics/texture, Ease of Use, LATCHable in BOOSTER MODE!!!
Verified Buyer
Love it
September 30, 2010
It's a great car seat, and my son loves the Ferrari Red :-)
Murrieta, CA
Best Car Seat EVER!
July 31, 2010
I recently ordered the Britax Frontier 85 Combination Booster in Canyon and could not be happier. I did many hours of research on car seats for my almost 4 year old and 13 month old. It didn't take me long to decide that Britax is the best and when other brands stop at what is acceptable for safety standards Britax keeps going. It was important that the booster seat I chose for my preschooler had all the safety features that I wanted, including a 5 point harness and LATCH system. In my research I found that MANY boosters DO NOT have a LATCH system so the only thing holding the seat down is the weight of the child...that didn't sound good to me! The seat fits in our Nissan Pathfinder beautifully and was easy to install. My son loves it and tells me that it a comfortable ride. I'm so thankful I went with this seat and know that it will be used for a very long time! Oh and did I mention that it's LACTH compatible for up to 85 pounds and will become a regular booster to 120?! So cool!! :)
  • LATCH system
  • 5 point harness
  • up to 120 lbs, 85 lbs with LATCH system
  • comfortable ride
  • SAFE!
  • No recline, but seems okay!
Customer Q&A