Britax Pinnacle 90 Harness Booster Car Seat - Manhattan

This item is discontinued.
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ClickTight Installation System allows parents to easily achieve a safe and secure installation using the vehicle seat belt throughout the life of the seat, in harness mode, without having to worry about the weight of their child (May not be compatible with all vehicles. See installation instructions.)

Side Impact Cushion Technology features energy-absorbing cushions on the exterior of the child seat to reduce side impact crash energy by diverting crash forces before reaching your child and providing extra protection for the adjacent passenger

Base with SafeCell Technology designed to keep your child safe and secure in a crash by compressing and significantly lowering the center of gravity, reducing the forward movement of the car seat

Superior 360 Degree Protection Features

  • Integrated Steel Bars strengthen the connection to the vehicle and reduce forward flexing of the child seat during a crash
  • Energy Absorbing Versa-Tether® anchors the top of the car seat to the vehicle using a two-point attachment, minimizing the amount of forward movement of the car seat. Stage-released stitching helps reduce the crash forces reaching the child
  • HUGS? (Harness Ultra Guard System) Chest Pads provide resistance to forward movement in the event of a crash
  • Tangle-Free, Five-Point Harness (with 9 harness height positions - up to 20.5?) distributes crash forces across the strongest parts of the body and provides a secure fit
  • Compatible with SecureGuard? which works with the vehicle safety belt in booster mode to prevent the child from sliding under the lap-belt portion of the safety belt during impact, thus minimizing the risk of abdominal injury (accessory sold separately)
Superior Fit and Comfort Features
  • 90-pound Weight Capacity in Harness Mode allows your child to remain harnessed up to 90 lbs
  • 120-pound Weight Capacity in Booster Mode for safety and comfort as your child grows
  • Front-Adjust Recline for optimal child comfort
  • Comfort Foam provides an extra layer of padding to cushion your child
  • Two Buckle Positions offer a snug and secure fit for your growing child
  • Armrests provide a natural and comfortable place to rest arms
Superior Ease-of-Use Features
  • Quick-Adjust No-Rethread Harness easily adjusts the harness shoulder height and head restraint from the front of the seat without disassembling the harness straps
  • EZ-Buckle? System retains the harness buckle in a forward position and prevents the child from sitting on the buckle when boarding
  • Integrated Cup Holders and Storage are designed for easy access to children’s cups, snacks and toys
  • Easy-Remove Cover allows easy cleaning,without disassembling the harness or uninstalling the car seat
  • Color-Coded Vehicle Belt Guides provide clear indication of the path and positioning of the vehicle seat belt for use in either harness or booster mode
  • Premium Lower LATCH Connectors included

Child Weight (lbs) Forward Facing Harness: 2 years & 25, up to 90 Booster: 40 - 120
Child Standing Height (in) Forward Facing Harness: 30 - 58 Booster: 45 - 62
Child Seated Shoulder Height (in) Forward Facing Harness: 12.5 - 20.5 Booster: 15 - 23
Product Weight (lbs) 26.5
Product Dimensions Harness Minimum (in) 22.5W x 28H x 21D
Product Dimensions Harness Maximum (in) 22.5W x 36H x 21D
Product Dimensions Booster Minimum (in) 22.51W x 28H x 21D
Product Dimensions Booster Maximum (in) 22.5W x 36H x 21D
Seating Compartment Height (in) 23.5
Seat Area Depth / Width (in) 13.5 / 12
Shoulder Width (in) 15.5
Harness Slot Heights (in) 12.5 / 13.5 / 14.5 / 15.5 / 16.5 / 17.5 / 18.5 / 19.5 / 20.5
Buckle Strap Depths (in) 7.0 / 9.0
Product Reviews
out of 5.0
9 Reviews
Ratings Snapshot
of Reviewers
Marlborough, Massachusetts
Verified Buyer
Quick, easy and SECURE installation!
June 12, 2014
We have always used Britax car seats and this new clicktight feature allows installation in literally seconds! Not only that, it also provides a secure/tight installation! The car seat won't even budge when I try to move it! We have two of the Pinnacle 90 seats and with the side impact cushions it provides an extra feeling of protection. My 5 year old son commented on how comfortable his new seat was the first time he used it. I would definitely recommend this car seat!
  • Secure/tight installation
  • Quick installation
  • Very comfortable
  • Heavy, well made car seat!
Maryville, TN
Verified Buyer
Simply the best
November 9, 2014
A little more expensive, but very much worth it!! Installs easily with just a click. It's really amazing how this works, but the seats is tight and does not move at all. Very much worth the price for the safety of our child.
  • Installs easily
  • None
United States
Verified Buyer
Love it!
September 20, 2014
We have used Britax car seats since we had our first son. We know they are safe and great quality. My son loves his new big boy chair.
San Jose, CA
Verified Buyer
Great Booster/Car Seat
May 9, 2014
I bought this for my tall 3 year old grandson. We needed a 2nd car seat, so I thought about a booster rather than a normal car seat. This car seat is big, but I love how safe he is. His other car seat is a Britax as well, and to me, these are the best and safest brand out there. Yes, they are big and heavy, but it's worth it knowing my grandson is safe. I'd buy over and over again.
Palestine, TX
Verified Buyer
Love it!
September 18, 2013
Between my daughter & myself this makes our 5th Britax car seat. We have had the Marathon, Roundabout, Boulevard, Frontier 65 & now the Pinnacle 90. It was not hard to install & love how it doesn't move an inch. My princess loves it, but wishes it came in a more girly print.
Osceola Mills, PA
Verified Buyer
Great harness booster seat
July 31, 2013
My son loves this car seat!
  • Harness use up to 90 lbs.
DeLand, FL
Verified Buyer
so easy! my 7 year old can do it!
July 6, 2013
Third seat is awesome... Easy to install, and comfy for our 4 year old. Tall enough that our ten year old who is quite tall still fits in it. Easy to install and adjust. If you get the pinnacle, you won't be sorry.
  • Ease of use including front adjust harness height and recline, and of course need the brand new click and safe seat belt install. So easy my seven year old can do it! My 44 year old also loves the arm rests and the cup / juice box holder. This seat makes it easy to keep older kids in a five point harness. I love the side impact cushions since my oldest sometimes sits next to this seat. It's also usually installed outboard in our van's second row.
Best Uses
  • Ages four and up, extended harness use, mini vans or large cars.
  • It's a larger seat, so make sure it will fit in the vehicle and position you need it for.
Phoenix, AZ
Verified Buyer
Easy Installation
July 1, 2013
Fantastic harness car seat/booster. Timing was just right, we needed something for our tall yet lightweight little guy and this seat was just coming to market. Besides our level of comfort with Britax as a company who uses high quality materials, we are smitten with the ClickTight Installation System. Wow. My wife regulary has to leave the car seats with daycare (for days when the backseat is necessary for other passengers later in the day) and the ClickTight system fits the bill. Literally, the seat installs in seconds once you have done it once or twice. I had serious doubts but, it really does feel to be secured as well as if I had used the LATCH mechanism. btw- this seat has a LATCH system too and Britax has the best LATCH systems.Now, all we ask is that Britax implement the system in their convertible seats. Please!
  • Quick installation; Britax quality and safety assurance
Best Uses
  • Parents who need to remove and re-install carseats often.
  • Large size...still well worth it
Los Angeles
Skinny kid / Pinnacle 90
June 24, 2013
I searched high and low for a seat that would keep my skinny kid in a 5-point harness as long as possible being the safest option. I have also yet to see any of their friends at 5 or 6 years of age remain in a belt-positioning booster as recommended. The extra side impact protection is also a winner for me. This seat means business! Even my kids teacher asked which seat it was. I feels it's the safest seat on the market and I did a ton of research. Note: I won't use this for airport travel as it's heavy.
Best Uses
  • Anyone wanting to keep a 5-point harness longer, and in a belt-positioning booster with "double" side-impact protection up to 62".
Customer Q&A