2007-2014 Toyota FJ Cruiser - "Coil-Rite" Air Bag Helper Springs (Rear)

Firestone Toyota FJ Cruiser Coil-Rite Air Bags 2007-2014 4135
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Firestone - 4135fj
Authorized Dealer
Firestone #4135
Firestone - 4135fj
Authorized Dealer
Sale Price:
  • $94.19
$104.65 Save: $10.46 (10%)
Free Shipping
Usually Ships within 24 to 48 Hours (excluding Saturday and Sunday)
Arrives 1 to 5 days after product ships


Firestone "Coil-Rite" air bag helper springs are designed to fit inside the existing coil spring suspension creating a variable rate spring. These air bags are made of durable, elastic polyurethane providing years of comfort and stability to your vehicle. "Coil-Rite" air bags enable adjustment for varying loads and road conditions by inflating or deflating the springs. Performance can be altered as easily as inflating a tire. Installed between the frame of the vehicle and the suspension providing load support through the use of air pressure.

Features and Benefits

  • Easy installation (1 to 2 hours)
  • Kit includes (2) air bag helper springs and any required hardware
  • Will handle loads capacities up to 500-1000 lbs*
  • Reduce suspension fatigue
  • Improve steering and balance
  • Increase vehicle stability
  • Prevent "bottom" out
  • Limited Lifetime Warranty

Installation Notes

1. Do NOT exceed the vehicles Recommended Gross Vehicle Weight Rating (GVWR)

Tech Specs

Download Instructions: 4135 Instructions
Level Load Capacity: 500 lbs to 1000 lbs
Average Install Time: 1 to 2 hours
Front or Rear Axle: REAR
Drilling Required (Yes or No): NO
Weight: 10.00 lbs.
Part 4135 fits:
  • 2014 Toyota FJ Cruiser
  • 2013 Toyota FJ Cruiser
  • 2012 Toyota FJ Cruiser
  • 2011 Toyota FJ Cruiser
  • 2010 Toyota FJ Cruiser
  • 2009 Toyota FJ Cruiser
  • 2008 Toyota FJ Cruiser
  • 2007 Toyota FJ Cruiser

Customer Questions & Answers

Have a question about this product? Let one of our experts answer it for you!

We will respond with an answer ASAP.

Will these work with 2.5" lifted rear coil springs?
No, these air bags are for stock coil springs only.


  • 5.0 out of 1 Overall
  • 100% reviews recommend this product
Review Product
good product
Shipping was fast! instructions where easy to read, there were photos too, everything went together very easy! I had a problem with one of the fill valves, but they sent out a replacement right away and its all good now! I towed a utility trailer filled with cinder blocks the other day, with about 20psi in the system my head lights actually were shining on the road and not in the trees! very happy with this product! wish I put them on sooner!
Recommend this Product: YES
'10 Toyota FJ cruiser
– Value
– Quality
– Installation