Fitting & Specifications


     Quadbar Flexi Handbook

Fitting The Quadbar

The Quadbar is essentially a bolt on attachment. Currently 1 kit should fit most quads that are fitted with a tow bar & rack. However, many Polaris quads require variations of the brackets and need to be purchased separately at the time of sale. Professional fitting is recommended and it takes around an hour to fit, by an experienced mechanic.

The Quadbar Kit fits most Japanese brands;

      • Honda- All utility models 250cc and over*
      • Yamaha- All utility models 250cc and over* 
      • Suzuki- All utility models 250cc and over*
      • Kawasaki- All utility models 250cc and over*
      • Kimco- All utility models 250cc and over*
      • Can-Am- All utility models up to 400 kg net weight*.

Polaris- Most utility models up to 400 kg net weight*,  but for the 400 &570 models, an adaptor plate is available and may be purchased as an accessory. Ute/ tipping tray can not be fitted with a Quadbar unless you can design and manufacture a suitably substantial mounting point for the upper mounting plate.   it is difficult to fit and must only be designed by suitably qualified and experienced person. 

. Contact QB Industries before ordering if you are unsure of correct fitment

*Excludes sports models.

Note that some types of towing may be limited by fitting a Quadbar. If possible fit the bottom bracket with the ends curved towards the front

The Rigorous Testing Process

Ridge Solutions has undertaken a series of strength and destructive tests and the University of Southern Queensland have conducted testing on quadbike roll dynamics with and without a Quadbar

     An assessment of passive roll over protection for Quad Bikes - USQ
"Quad Bike Safety" Research from video library 

Additional Design Elements:

Height of the Quadbar – is typically below the riders head, reducing the chance of being caught on low hanging obstacles which should also cause little or no disruption to traditional usage patterns.

Weight distribution – the Quadbar is designed with a light aluminium upper and steel lower parts, resulting in a strong structure that has negligible effect on the centre of gravity. University testing has shown any effect is very small and in many cases makes the quad more stable than without the Quadbar.

Position of the Quadbar – is at the rear of the quadbike, as far away from the operator as possible, reducing the chances of the operator coming in contact with the PROPS. Its position and narrow shape also allows as much as possible for the operator to “exit” the quadbike in an emergency dismount, without hindrance. This positioning also allows for normal, unhindered mounting and dismounting.

Padding and rounded shape – to reduce potential injury from inadvertent contact with the CPD and also allowing the point of contact to slide as opposed to digging in during contact with the ground.

Side Roll 

Testing has shown that the Quadbar can be effective in preventing a quadbike from rolling more than a ¼ roll. For example during testing, the Yamaha Moto 250 completed 2 full rolls on a 20 degree or 36% slope without a Quadbar, but only ¼ of a roll with a Quadbar fitted. When the momentum is increased past the point when the Quadbar prevents more than a ¼ roll, the testing showed that the quadbike continued to roll past ½ roll, and in most cases ¾ roll to a full roll, which effectively reduces the chances of a quadbike pinning a rider. The momentum of the roll was also slowed and a space between the quadbike and the ground was maintained.


The tests for the backflip (or pitch) on a 20 degree or 36% slope, was set with considerable rearward momentum, enough to cause considerable handlebar and instrument damage and even bending to the steering columns. Forces of this magnitude have potential to cause serious or fatal injuries. The Quadbar was effective in arresting the backflip, with the quadbike rising on the hoop and falling to the side.

Pinning Injuries Include:

  • Death from asphyxiation - cutting of air supply.
  • Death from mechanical asphyxiation - inability to breathe due to forces (weight) on the body – can vary from minutes to hours.
  • Death caused by Crush syndrome - toxins entering the blood stream when the “crush” cause is removed and circulation is restored.
  • Death from drowning – often in shallow water, whilst being pinned.
  • Death from heart failure – there have been a number of cases of roll over and pinning where the cause of death has been identified as heart failure (conjecture whether heart failure pre or post rollover)
  • Loss or reduced capacity of limb(s) – due to lack of circulation.

General Specs

  • Rated for a quadbike of up to 450 kg (unladened or curb side mass)
  • main and upper structures - Structural Aluminium tube
  • Horizontal variance between tow bar & rack 180 – 260 mm
  • Total Overall height 1400 mm
  • Approximate height above seat level 730 mm
  • Weight 9 kg
  • Padding 25 mm close cell UV stabilized
  • Fittings laser cut for accuracy and consistency
  • Fittings zinc plated