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New Items
1. Yamaha Banshee YFZ350 Toomey TORS Removal Thumb
2. Yamaha Banshee Terrycable Clutch Cable
3. Yamaha Banshee Mod Quad Thumb Throttle Lever
4. HSD High Speed Dirt Digital Gift Cards
5. Hiper Racing Wheels CF1 Inserts Qty (4)
6. Yamaha Raptor 700 Twin Afterburner (06-14) Black
7. Suzuki LT500 Lone Star Rear Swingarm & Brg Hsg
8. Suzuki LT500 Steering Stem Bearings Seals Bushing
9. Yamaha YFZ450 Afterburner (04-09) Comp Slip On Exh
10. Yamaha YFZ450 Afterburner (04-09) Comp Exhaust Sys
11. Yamaha Raptor 700 Twin (06-14) Rep. Heat Shield
12. Yamaha Raptor 700 Twin Afterburner (06-14) Comp Ex
13. TRX 400EX Replacement Heat Shield
14. Honda TRX450R (06-14) Comp Slip On Exhaust
15. Honda TRX450R (06-14) Quiet Slip On Exhaust
16. Honda TRX450R (06-14) Quiet Exhaust System
17. Honda TRX450R (06-14) Comp Exhaust System
18. Honda TRX700XX (08-09) Comp Slip On Exhaust
19. Honda TRX700XX (08-09) Comp Exhaust System
20. Honda TRX400EX (99-14) DMC Quiet Slip On Exhaust

New Brands
FST Motorsports
LoudMouth MX
MotoWorks
Supersprox
Dayco
STI
Vee Rubber
Dragon Fire
Interparts
Warn
NGK
Pivot Pegz

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History
left/rear view- AC Racing Nerfbars, DWT wheels, PEP ZPS shocks IRS

For ATV Quad Racing

HSD Racing was formed in the early 1990s. From the beginning, HSD has been developing Independent Rear Suspension (IRS) for racing.

left/rear view- Durablue front hubs, AC Racing Nerfbars, DWT wheels, PEP ZPS shocks

Dirt Wheels Magazine

September

Early versions of the IRS Suzuki LT250R

were featured in-

 

September 1995 Dirt Wheels / Over The Bars

 

February 1996 3&4 Wheel Action Magazine.

(Now 4-Wheel ATV Action)

4 Wheel ATV Action

February 1996 ATV Action Magazine page 26 February 1996 ATV Action Magazine page 27 February 1996 ATV Action Magazine page 72

Zero roll, zero preload high speed cornering

...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.

ATV Sport

June 1999 ATV Sport Magazine page 68 June 1999 ATV Sport Magazine page 69

PEP ZPS zero preload shocks

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.

jumping Suzuki IRS LT250

Race Ready IRS

August 2000 Internet Article

The most comprehensive

 racing IRS write up to date

Mark LoScerbo on HSD IRS LT250

ATV Connection Developing Race-Ready IRS for racing

Race Ready IRS

If you want a custom built 

INDEPENDENT REAR SUSPENSION (IRS) quad

 then HSD wants to hear from you.

 

contact HSD

 

IRS for racing oval