Contact JD Performance @ 951.676.7957 or [email protected]

JD Performance has created exclusive +2 Long Travel MGC A-Arms for the Championship Proven Cobra ATVs.  JD Performance Cobra A-Arms come with caster/camber adjustment.  Combines these with Motowoz shocks and you have a winning package!

$599.00 arms are +2 Long Travel MGC version


To set the caster is the fastest and easiest in the industry. The top arms have "caster shims". Simply remove the top A arm bolt (or 2 bolts for non Yamaha) and relocate the shims and shift the arm forward or back. The whole process takes 5 to 10 minutes, and adjusting the caster does not affect your camber settings. Most of our competition uses heims on the frame end of the top A arms to adjust caster. Using this method is extremely time consuming and difficult to do, not to mention that your camber settings will change in the process. Getting both sides of your quad to have equal settings is nearly impossible without specialized gages and tons of experience. We have taken the guess work out of the front end and made it easy for you!

TRX450 Shown              Front of Bike ->


On our to A Arms, the ball joint slides through the end of the arm, with a jam nut on the outside and lock nut on the inside. Camber adjustment is done by simply loosening one nut and tightening the other. Most of our competition threads the top ball joint into the arm, so adjusting the camber would require "breaking" the ball joint loose from the spindle then turning the ball joint... not very fast or easy. For those of you who are worried about the jam nut on our set up, simply use a little Locktite.

* With all extended length A-Arms, JD Performance recommends that you get aftermarket front shocks that are set up for your particular weight and riding style. Stock brake lines will work with +1 and +2 length A-arms, but longer brake lines will be required for any +2+1 or longer.

* All prices are subject to change based on order and custom changes to your particular order. No Returns on custom orders. Average turn around from order date to ship date is about 2-4 weeks. Please call with any questions.

In addition to our A-Arms, Stems and Swing Arms we are proud to carry top quality products from ...
AC Racing, Baja Designs, Durablue, Elka Suspension, Lonestar, Rekluse, Streamline Brakelines
TCS Shocks, Trail Tech, Verde Powersports and many more!

JD Performance

Mon-Fri 9am-6pm Pacific Standard Time

(951) 676-7957
[email protected]