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View Mods 3 Stage 1 Power Kit for Z400 and KFX400  
Stage 1 Power Kit

View Mods3 Z400 Stage 2 Power Kit - FREE SHIPPING  
Stage 2 Power Kitt

View Mods3 Stage 3 Racing Kit for Z400, KFX400, and DVX400 - FREE SHIPPING  
Stage 3 Racing

KFX400 Parts and Accessories.
Welcome KFX 400 Owners!
This part of our web site is dedicated to the KFX 400.  We have a ton of great parts and accessories for your quad!  We try our best to beat anyone's price so if you see it cheaper call us a 732-385-7423.

KFX Part Recommendations

Best Upgrade for under $20 bucks!
  With the stock 20 inch tires the gearing on the KFX400 may seem a little off.  You'll notice that 2nd gear winds out a bit fast and 3rd gear doesn't have enough bottom end to pull you out of the turns hard.  Add a 13 tooth sprocket in the front and you'll be able to come out of the turn in 3rd gear rippen.  Doug Gust uses the 13T sprocket.  (you will loose a bit on the top end)
   
Best exhaust for the KFX 400
  Mods3 sold a ton of Pulse Chargers even though when recommended to riders they would say, "Pulse Who."  The response we got back was overwhelming, no pipe on the market could compete.  We always do our homework in finding the best pipe for the Z and KFX400s but due to legal issues the Pulse Charger is currently not available.  Mods3 had to go back to the drawing board and find some quality pipes to sell and make our customers happy.  If you're racing, the Yoshimura Pro Series is the way to go and was used by Doug Gust on his Z400.  If you are riding light motor cross, woods, and just the weekend basher we've got the LRD PRO4 exhaust.  In my opinion you can't find a better full exhaust for the price.  Great sound, great power, and very well crafted.  Check out more pipes and power parts in our power section.
   
Another great upgrade for more bottom end.
  The UM Aluminum Air Box is a must on this machine to improve your bottom end.  People say who cares if its aluminum, what's the difference.  The difference is that the Air box is bigger and the opening is way larger to allow more air in.  This boxes uses an oversized 250R K&N air filter.  The mesh screen that goes over top is sold separately.
   

 

KFX 400 Parts & Accessories

Honda ATV Parts Our Take on the KFX 400
My Name is Ryan and I head the web development Department and ride a KFX400 which is the same thing as a Z400 but green.  I've ran several different set ups on this quad thanks to all the prototypes that come across my way.  I hope to provide my fella Z400 and KFX400 Riders with some useful info on parts and upgrades that will help you with power and handling.  We have plenty of great Mods for your Z just take a look around. 

Have fun shopping and if you should have any questions feel free to give us a call.  732-385-7423

New Part Updates
2.22.13 Added Moose Podium Bumper to Body Section
6.22.12 Added Bully Bumper to Body Section
3.21.12 Added Hot Rods Connecting Rod Kit to Power Section
2.24.12 Added GPS Voyage by TrailTech to electrical section
1.31.12 Added Barnett Clutch Components to the Power Section
10.25.11 Added Bearing Carrier for stock swing arm to axles and stuff.
8.2.11 Added Uni Power Kit to Power Section
7.25.11 Added Fox Float Shocks to suspension section
7.14.11 New Wheel Bearing Hub Conversion kit added to maintenance section.
 
 

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Parts For ATVs 05 - 2012