
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.
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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 |
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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 |
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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 |
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A-Arms |
Swing Arm |
Shocks |
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4130 Chromoly Construction
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NO Spindle Modifications Needed
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Available in +2 & +3 lengths
Std Shock Arms = $599
Std Shock MGC = $699
Long Shock Arms = $699
Long Shock MGC Arms = $799
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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!
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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
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- 4130 Chromoly Construction
- Poly Urithane Anti-Vibe Bushings
- Nickel Coated
- Available in Stock, +1 and +2
(and +1/2 forward)
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Honda tie rod
ends |
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Honda tie rods
with ends |
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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
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All prices are subject to change based on order and
custom changes to your particular order. No Returns on
custom orders. |
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