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View Full Version : Honda TRX 400EX & 400X ATV Info



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  1. Cylinder Head Cover
  2. Show your XC/Trail 400ex
  3. Ring gap too much?
  4. "spring and plunger" in cylinder head
  5. difference from a 13 to a 14 tooth sprocket
  6. Switchfly throttles
  7. 400ex transmission problems
  8. Velocity Intake System?
  9. quick jetting question
  10. Header Installation Question?
  11. What Else Should I Do To My 400?
  12. Headlight trouble
  13. idle problem
  14. help with GTthunder head studs
  15. Ballance radials.
  16. 400 EX Shifting
  17. What to buy next?
  18. post mx 400 pics!!!
  19. fmf power bomb
  20. My 440ex leaks oil BAD PLEASE HELP WHAT CAUSES IT
  21. Whats all needed for 450r carb
  22. thinking rebuild this winter.
  23. 400ex cam bolts
  24. Needed info on buying / installing FCR carb on my 400ex
  25. shocks on the way
  26. Starting issue start not working?
  27. Magnum cams?
  28. 450r shocks on 400
  29. Honda 400ex Clutch not disengaging? Help!
  30. should i trade my 450r carb for a curtis sparks fcr
  31. 08 top end
  32. Got my 400ex back
  33. i may have a problem
  34. what carb do i need for a 400ex
  35. build my motor
  36. 450 arms
  37. Whats leaking?
  38. anyone ever used a hygear dual rate rear spring kit?
  39. xr400 headhasket on a 400ex and heavy duty head studs
  40. Then and Now
  41. stock 400ex or built z400
  42. Weekend Atv Adventures
  43. Clutch
  44. Strange compression issue and piston size Q
  45. Cylinder
  46. Project Slow Going
  47. Clunk in the front end
  48. check it out
  49. Where To Buy Maxxis 4 Snows?
  50. jetting help are <dj kits junk>
  51. 05-07 custom headlight
  52. 400ex throttle
  53. Just trimmed my plastic!
  54. 05 Plastic with 06 450R Headlight
  55. 2003 400ex Neutral Switch snapped off in case
  56. 400 ignition switch ??
  57. My official build thread!
  58. Smoke ):
  59. I need!
  60. Clutch Kit
  61. speed calculator
  62. 04/05 450 carb on a 400ex
  63. where to find laker plastic
  64. checking oil
  65. sell or keep on all the way
  66. Oil leak!
  67. starting woes
  68. possible jetting problem?
  69. Small bore stroker
  70. coughing on cold start up
  71. Will Banshee Rims Mount To 400exs?
  72. 440ex jetting help
  73. Caliper\Piston Q
  74. ??for people with a 450r carb on EX
  75. 400ex Stock Exhaust Question
  76. Teather kill switch
  77. Motor help
  78. Jet question
  79. Starter button
  80. oil leak
  81. irazr rear tires?
  82. oil cooler fan combo
  83. innerchanging a arms
  84. Clutch issues
  85. K&N Velocity intake question
  86. jetting
  87. Axle bearing cross reference..Aftermarket
  88. Best Dirt Drag Tire Setup For Hard Packed Dirt?
  89. valves
  90. Need Help. '04 EX Won't Run Right.
  91. Looking 4 Best Way To Increase Accel
  92. do they make a hump seat for the 400?
  93. Clutch help
  94. xc/mx aarms
  95. crankswork +4 crank on a 440
  96. JEtting help
  97. A few pics I snapped
  98. Cam chain
  99. 400ex not running right?
  100. FS 450R rear brake set up
  101. oil
  102. Two questions
  103. I should've listened........ but
  104. 400ex problem, could use some help
  105. Starter clutch
  106. lug nuts
  107. aftermarket light switch
  108. New rebuild runaway issue
  109. Bar bend and brake lever pull
  110. 450 hot start
  111. oil splattering on right front fender!!
  112. stock 400ex needle vs stock 450 whats the difference
  113. 400ex and 400x frames
  114. Another 04/05 450r carb ?
  115. Axle bearing help
  116. 400ex front end messed up
  117. Need help
  118. Cotter pins...good idea
  119. I'm screwed.
  120. Rear suspension problem
  121. 400ex Carb Question
  122. Wiring for dummies
  123. 03 400ex sputters
  124. largest piston in 400ex without resleeving
  125. starting question
  126. should have taken a picture
  127. 440 ex Bigbore Kit and Hotcam stage2
  128. Got Some 4 Snows And Pro Wedge IIs And Need Help Deciding Which Ones To Run!
  129. ex
  130. 400ex stock a-arms, tierods and shocks trade for long travel shocks
  131. what to use for jets on a 05 450 carb for a 400ex
  132. want to run 22s all they way around
  133. Magnetic oil drain plug
  134. Alright guys, what's wrong here?
  135. Choke/enrichment valve on 450r carb
  136. 400ex oil tank repair HELP
  137. Interesting jetting problem
  138. Possible trade I'm looking at (need advice)
  139. GT Thunder rear link ?
  140. What am i doing wrong with throttle cable?
  141. seat ?
  142. 01 honda 400ex... whats wrong?
  143. Piston Identification
  144. My 01 440ex with new hood installed
  145. Help Choosing Powdercoating/Paint Color For My 400ex
  146. Rebuild!!!!!
  147. Help! Fmf exhaust rattle!
  148. My 400ex Wont Start, Help Would Be Awesome.
  149. Having clutch issues
  150. 2006 twist kit
  151. tires
  152. Gasket question.
  153. '03 400ex Running horrible after rebuild
  154. 400EX misses at top end. PLEASE HELP..
  155. 400's with 450 shocks - pic please
  156. Cosmetic question!
  157. 400ex plastics question
  158. 400ex 440 stroker
  159. Needing a Carburetor Throttle Slide
  160. 400ex drag times
  161. 05 450r carb on 400ex jetting problem
  162. odd plastic
  163. 400ex Hotcam question?
  164. strange problem
  165. Used cam questions
  166. Crf, yzf hybrid ?
  167. 400ex clutch pin lifter
  168. Fresh top end!!
  169. looking for an fmf power bomb for sale for my 400ex?
  170. 400ex mx build
  171. i need 400ex extended a arms and/or nice shocks
  172. 440 or 426?
  173. will 450r a arms fit a 400ex?
  174. what are good mx tires for a 400ex?
  175. need help
  176. crf 450 timing chain ? 400ex
  177. Am I Running Too Rich?
  178. Piston Ring Question
  179. power bomb header question?
  180. CJM, Dxcody, guys with 450 shocks on 400's...i Have a ??
  181. Tires not seating properly
  182. can a built 400ex really have a chance against 450's mx racing?
  183. Too much red?
  184. Some Drag Racing Videos/Pictures
  185. 05 450R carb w /VRpilot adaptor, airbox and intake boot! For sale!!
  186. stock bore size?
  187. Homemade lowering kit
  188. Anyone flattrackin' in Wisconsin?
  189. 450r carb help
  190. hare scramble taylorville il
  191. couple more questions spark plug.
  192. squeaking noise from front end
  193. Exhaust
  194. GTT XC/MX Link
  195. off set wheels?
  196. got some parts ordered but
  197. Brake Lever Question
  198. Valve cover bolts...
  199. 400EX Cylinder Head Identification
  200. 400ex year hood
  201. 416 rebuild giving me more problems. w/ video
  202. Quick q
  203. hot rods stroker crank or regular?
  204. Oil filter cover bolt stripped
  205. lightened flywheel
  206. my 400ex drag bike
  207. 2003 400ex making weird noise please help
  208. aftermarket fan
  209. valve question
  210. 08 TRX 400 front shock noise
  211. Paint
  212. Yuasa YT12A-BS vs Shorai
  213. its back!!!
  214. Any guesses what broke my piston?
  215. Trx450r
  216. 450r pro pegs on 400ex
  217. Maybe a stupid question... but..... (suspension)
  218. What Jet Should I Run???
  219. 450r carb after rolling over
  220. 450r works shocks on a 400ex?
  221. 99 Fourtrax OEM Seat?
  222. breaking in the motor
  223. How A 400ex Should Look
  224. how to change shifter seal?
  225. Gbc x rex tire size q?
  226. PEP to Fox
  227. +2 arms and shock revalving question
  228. Need help... Steering is loose
  229. Cylinder scoring
  230. 400ex race graphics
  231. New thread of my build
  232. xc setup?
  233. where to ask 250ex questions?
  234. Need help with my 416 dying
  235. 416 kit stage 2 hotcams??
  236. not my 400
  237. Tires
  238. GT Thunder Poly Skid
  239. Loud top end tick
  240. Saturday Night's Drag Results With Videos/Slips
  241. Orange tms Gel battery on ebay??
  242. For those with grab bars: Grab Bar Saver
  243. 400ex frame guards
  244. jetting sugestions please? on the differant 400exes
  245. Question about replacing OEM piston
  246. tie rods
  247. WB E Series full exhaust
  248. Carburetor upgrade
  249. Fat bars and hand guards for xc
  250. 440 big bore