HOME   |   A-ARMS   |   STEMS   |   SHOCKS   |   ABOUT US   |   CONTACT US   |   CUSTOMER PICTURES  
  Contact JD Performance @ 951.676.7957 or jdpatv@yahoo.com






What can we say about the 400ex. We consider it to be one of the greatest pioneer bikes. A very well rounded quad that has a virtually bullet proof motor. This bike works well for the track, trail, desert, dunes, racing or just for fun. A very comfortable and enjoyable bike to ride. Over the past years the 400ex has been bashed for not having a lot of power (compared to the new quads) but lets not forget it's the bike that rejuvenated the ATV industry. It may not be the fastest bike out there, but we LOVE it!!

Our recommendation on this bike is +2 or +3 A arms and +1 1Ž4 swing arm. The reason for the longer swing arm is to make the weight bias just right. The 400ex has a very light front end (this make a great wheelie machine). We do not really recommend going forward with the A arms. Doing this would transfer more weight to the rear wheels creating more "hook up" than it already has. We would also recommend running 4-1 front wheels instead of the stock 3-2 set up. This changes the scrub radius for better, and allows +3 arms while retaining the width of +2 with stock wheels.  

   
For three episodes Chase Cunningham of Morehead Motorsports in Morehead Ky. turned a bone stock 400EX into a C class motocross contender.   JD Performance parts went on the vehicle in part two and were tested in part three.
Episode 3; For the next three episodes Chase Cunningham of Morehead Motorsports in Morehead Ky. turn a bone stock 400EX into a C class motocross contender.

In Part 1 we outline the project and send our frame out to Bare Performance for a gueest kit and two stage power coat.
View Part 1
 
Episode 4; In part 2 of our 400ex build, Billy Maddix and Chase Cunningham put in 36 hours of work over a 48 hour period nearly completing the project.

Modifications include a CT 440 Midrange Motor Package, JD Performance chassis components, G-Force axle, PEP Limited Mass shocks and steering stabilizer, UM performance aluminum bolt-ons, Douglas Ultimate wheels, Duro Tires, and Tusk handlebars and brake lines.
View Part 2
 
Episode 5, In part 3 of Billy Maddix and Chase Cunningham add the finishing touches to our C class racer 400EX project. After blowing a head gasket during break in we take the machine to RC Motorsports where they install a Bronco Cylinder and Nmura piston after which we hit the track and put the finished machine through its paces.
View part 3
 
         
                 
    A-Arms      Swing Arm      Shocks 
  • 4130 Chromoly Construction

  • NO Spindle Modifications Needed

  • Available in +2 & +3 lengths

  •  

    Std Shock Arms = $599
    Std Shock MGC = $699
    Long Shock Arms = $699
    Long Shock MGC Arms = $799
  • Exclusive Quad Tube design

  • Uses stock carrier

  • Stock or + Lengths

  •  

  • Exclusive Quad Tube design

  • Uses stock carrier

  • Stock or + Lengths

  •  


   


The TRX has won countless races and championships, but not in stock trim. This is why JD Performance spent so much time developing parts for the TRX450R. Our upgrades provide more strength, balance and comfort than Honda could ever have imagined.

A-Arms are available for Honda 250R in +1, +2, +3,   +1+1, +2+1, and +3+1. Prices same as other Honda A-Arms.

You can also order the exclusive JD Performance Upper Only Kit!

   
                      
    A-Arms      Swing Arm      Shocks      Stem 
  • 4130 Chromoly Construction

  • NO Spindle Modifications Needed

  • Available in +2 & +3 lengths

  •  

    Std Shock Arms = $599
    Std Shock MGC = $699
    Long Shock Arms = $699
    Long Shock MGC Arms = $799

     

  • Exclusive Quad Tube design

  • Uses stock carrier

  • Stock or + Lengths

  •  

  • Exclusive Quad Tube design

  • Uses stock carrier

  • Stock or + Lengths

  •  

  • 4130 Chromoly Construction
  • Poly Urithane Anti-Vibe Bushings
  • Nickel Coated
  • Available in Stock, +1 and +2 (and +1/2 forward)

 

       
       
Honda tie rod ends
Honda tie rods with ends
  Tie Rod End Upgrade 

Upgrade your early model Yamaha/Suzuki tie rod ends.

The weakest link in these quads is the small 10mm male threaded ends.  All raptor 660,04/05 yfz, raptor 250, banshee, and blasters have the smaller ends. In 06 Yamaha stepped it up to a 12mm. We have complete kits (2  12mm tie rods and 4 new 12mm ends) to upgrade what you have now. And we also have the tie rod end upgrade you can get when you order your arms.

 

Note When you get the upgrade in your arm kit, you will get 12mm tie rods instead of the 10mm

 

So if you are upgrading your old setup, or purchasing new arms, or just have worn out ends on your quad , we have you covered.

 

Upgraded tie rod ends in a/arm kit   $100

2  tie rods with 4 new ends   $149

 

Kits are available for Honda, Yamaha, Suzuki, Kawasaki

All prices are subject to change based on order and custom changes to your particular order. No Returns on custom orders.

JD Performance

Mon-Fri 9am-6pm Pacific Standard Time

(951) 676-7957
jdpatv@yahoo.com