...Three years later in the June 1999 ATV Sport Magazine you can see how the same LT250R evolved into a high-speed well handling ATV with advanced zero-roll suspension geometry.

In the summer of 1999 the IRS quad's zero-roll A-arm suspension received (2) pairs of PEP ZPS Zero Preload System shocks. Triple rate fronts -and- Dual rate rears.

Race Ready IRS

August 2000 Internet Article

The most comprehensive

 racing IRS write up to date

Race Ready IRS

If you want a custom built 

INDEPENDENT REAR SUSPENSION (IRS) quad

 then HSD wants to hear from you.