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



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  1. AMR Rev Box & Monster Coil (4 replies)
  2. Show Ur Sick 05-10 400ex! (36 replies)
  3. Talk to me on clutch springs BARNETT?? (12 replies)
  4. Geometry Alterations with 450r A-Arms?? (29 replies)
  5. head work ? (6 replies)
  6. Seat Covers (17 replies)
  7. Stainless Oil filter (9 replies)
  8. First run questions? (7 replies)
  9. Switch under clutch (10 replies)
  10. Screw thread size for skid plates? (6 replies)
  11. new and old 400ex (9 replies)
  12. show me your 2005-2007 400ex cut fenders (10 replies)
  13. On light woulnt come on (5 replies)
  14. sorry guys. (54 replies)
  15. Motor full of gas (2 replies)
  16. wheres the cheapest place for rear fenders? and watch my videos guys (17 replies)
  17. My 400ex rebuild thread (68 replies)
  18. e85 (9 replies)
  19. Got a problem with shipping (7 replies)
  20. 400ex plastic (3 replies)
  21. Adjustable needle (10 replies)
  22. 300ex rear fenders on 400ex? (13 replies)
  23. How Do I Fix This?? (8 replies)
  24. Cam Chain (7 replies)
  25. HMF vs. Sparks (17 replies)
  26. Motoworks Exhaust (30 replies)
  27. Oil leak (10 replies)
  28. Valve spring tool?? Seals are getting close (12 replies)
  29. 450r Fox float R shocks on 400ex (13 replies)
  30. Which clutch? (13 replies)
  31. HMF silencer for 2012 400X (4 replies)
  32. **Revised** NEW GUY does 400ex Re-build (47 replies)
  33. 400ex bushings (2 replies)
  34. how can things like this be missed? (1 replies)
  35. Need gaskets P/N (7 replies)
  36. tri5ron??? (10 replies)
  37. Twist throttle 2005 400ex (5 replies)
  38. My 450EX Winter build (90 replies)
  39. tie rod end question (1 replies)
  40. plug reading questions (6 replies)
  41. Clutch problem (12 replies)
  42. Carb Help! Video Attached (21 replies)
  43. New to forum. Questions about Maint. (5 replies)
  44. For those of you with Roll Design A -Arms (8 replies)
  45. do i have mayier plastic??? (16 replies)
  46. are fullflight arms on ebay any good??? whats benifit of +1 longer arms (35 replies)
  47. 450r shocks- Need a set? (0 replies)
  48. HMF Shorty (16 replies)
  49. Im stumped (9 replies)
  50. Carnage/New wheels? (21 replies)
  51. Missing carb. screw? (2 replies)
  52. prep for sand dunes (17 replies)
  53. painted engine (30 replies)
  54. how screwed am i..first oil change on this bike not good (39 replies)
  55. 01 ex won't rev past half throttle after warm (7 replies)
  56. Hardlandings Atv Club (4 replies)
  57. New style 400ex's (2 replies)
  58. Too Rich? (26 replies)
  59. :) (4 replies)
  60. tusk hand guard (1 replies)
  61. Gasket.... (3 replies)
  62. 08 plastics on an 07 big deal to change? (2 replies)
  63. Maier front fenders (0 replies)
  64. 07 400ex wont start?? (25 replies)
  65. 400ex build (3 replies)
  66. master link (5 replies)
  67. 400ex K@N Powerlid, Airfilter, and, Outerwears Cover For Trade (15 replies)
  68. 2004 400ex Carb Issues (10 replies)
  69. going to the mounds in mtmorris,mi tomorrow... (7 replies)
  70. Stickers (15 replies)
  71. tusk axle (18 replies)
  72. 416ex carb?? (11 replies)
  73. Help!!!!!! Cam Problem (15 replies)
  74. 14 tooth sprocket how many links? (5 replies)
  75. YZ kill switch install on 400ex??? (4 replies)
  76. Fried my topend?? (1 replies)
  77. HELLP!!!!!!!!!! 400ex wont start. (7 replies)
  78. 450R rear shock on 400ex (13 replies)
  79. Do you know where this picture is?? (5 replies)
  80. FCR 39mm on 400ex (4 replies)
  81. frame swap (9 replies)
  82. hub nut spec i need a new one,, (1 replies)
  83. Curious: GT Thunder XC Link (17 replies)
  84. anyone in Michigan (11 replies)
  85. Need help on 2007 400ex wire harness (4 replies)
  86. 400ex Problems? (7 replies)
  87. maintenance???? before storing for winter. (14 replies)
  88. FCR Carb Identification (1 replies)
  89. Im having a weird problem here. (16 replies)
  90. stage two cam (4 replies)
  91. Clutch wont disenguage, oil tank overfull - whats your opinion (2 replies)
  92. 400ex xc set up (7 replies)
  93. decompressor spring/plunger (23 replies)
  94. front sprocket (5 replies)
  95. another starter questions.... starter/sprag (10 replies)
  96. new 400x owner (9 replies)
  97. what kind of web cam? (4 replies)
  98. need help blown fuse? (3 replies)
  99. question (13 replies)
  100. Question on the Transmission (14 replies)
  101. 450r-400ex frontend swap (9 replies)
  102. spark plug?????? (12 replies)
  103. Some New Found Powa Im Sure (6 replies)
  104. Service and Owner's Manual (8 replies)
  105. Short clip of riding, the go pro :) (1 replies)
  106. I have to praise the old 400(440) tried and tru (4 replies)
  107. Clutch Replacement Question (7 replies)
  108. Well what do you know, time to adjust the valves (9 replies)
  109. 450 axle on a 400 (4 replies)
  110. how to gain power? (32 replies)
  111. outerwears mod? (3 replies)
  112. 400EX aftermaket intakes? (3 replies)
  113. Exhaust Gaskets (2 replies)
  114. Awesome luck (11 replies)
  115. Multi-angle GoPro ride in Los Padres National Forrest (1 replies)
  116. 440 kit installed NOW WHAT JET SIZES? (19 replies)
  117. what's the scoop with 450r shocks??? (22 replies)
  118. More issues... (5 replies)
  119. 400ex fender cutting? (12 replies)
  120. Bling Star sprocket and rotor guard (6 replies)
  121. won't stay running (6 replies)
  122. AHHHHH..... stupid chain..... (2 replies)
  123. popping fuses (2 replies)
  124. 400ex seat latch (17 replies)
  125. Valve Adjustment problems... (4 replies)
  126. timing issues (4 replies)
  127. rear carrier does not have a groove for the break stay c clip (3 replies)
  128. My 400EX stage 2 and stage 3 hotcam comparision (13 replies)
  129. cam timing chain jumping a tooth ??? (10 replies)
  130. bowl drain woes (4 replies)
  131. starting a rebuild on my 01 400ex what u guys think? (32 replies)
  132. how do i get break stay c clip in? (1 replies)
  133. Jetting (9 replies)
  134. k&n airbox lid 400ex (4 replies)
  135. How do you remove warning lables? (2 replies)
  136. ported head (13 replies)
  137. Looking in to 416 (5 replies)
  138. Build update! (11 replies)
  139. carb (16 replies)
  140. spendle and hub ? (1 replies)
  141. 400ex tire won't hold air (8 replies)
  142. broke studs :( (11 replies)
  143. rear shock (5 replies)
  144. Hot cams ;00 (17 replies)
  145. Aftermarket Headers? (24 replies)
  146. three 400 ex and a 250 hittin mudhole (14 replies)
  147. did i get a good deal? (3 replies)
  148. anyone used sea foam in quad? (12 replies)
  149. Choosing Some Handlebars. Any Help? (22 replies)
  150. 39mm FCR Upgrade - Is it Worth it ? (10 replies)
  151. What exhaust should I buy? (16 replies)
  152. dirtbike (4 replies)
  153. hot cam install ??? (3 replies)
  154. any one have ? (0 replies)
  155. XR600-650L ?? on fittment in 400ex (16 replies)
  156. Skidplate (5 replies)
  157. Back to stock muffler and now wont run! (17 replies)
  158. yzf 426 pipe on 400ex (5 replies)
  159. let it go :( :) (34 replies)
  160. carb/jetting help plz (7 replies)
  161. Yuasa Battery (10 replies)
  162. Looking to buy a 400 (1 replies)
  163. decompression problems (13 replies)
  164. any one ? (0 replies)
  165. a-arm kits (1 replies)
  166. axle problem (10 replies)
  167. swing arm help please!! (4 replies)
  168. wont start (22 replies)
  169. A easy fix for you guys with cable/header pipe concerns (11 replies)
  170. case saver? (1 replies)
  171. 400ex rear break? (7 replies)
  172. nerf bars (2 replies)
  173. where to buy 14mm ball joints (6 replies)
  174. Won't run (8 replies)
  175. 400ex and xr400 (1 replies)
  176. Burgaurd = s**t (22 replies)
  177. These 400ex's Sure Are Tough (15 replies)
  178. Quick Question (9 replies)
  179. identify hotcam (9 replies)
  180. what octane fuel (11 replies)
  181. Shaving a 400ex head (5 replies)
  182. Snowriding On The 400ex (0 replies)
  183. Hot cam splines striped out Where timing gear goes (4 replies)
  184. Need some A-Arm help (6 replies)
  185. What Are They Called?! (12 replies)
  186. 426 vs 440 (22 replies)
  187. Skull Hood (3 replies)
  188. 400ex top speed!!! (16 replies)
  189. clutch cable Q (7 replies)
  190. black smoke (9 replies)
  191. Gassy smell in oil (15 replies)
  192. piston? (11 replies)
  193. Let the tear-down begin! (31 replies)
  194. smoking what the h*** (14 replies)
  195. 88 mm rings (7 replies)
  196. Websites for 400EX parts? (13 replies)
  197. air filter oil!! (10 replies)
  198. Engine Stutter??? (4 replies)
  199. JET Motorsports suspension? (14 replies)
  200. Gettin' shocks fo FREE!!! lol (4 replies)
  201. CFM Oil Tank (15 replies)
  202. FMF Slip on help (2 replies)
  203. 2Bros, 2003-07 M7 slip on, On a 2001? (10 replies)
  204. 400 gone racing with the 450s (4 replies)
  205. jetting??? (9 replies)
  206. Case Saver (26 replies)
  207. harescramble (78 replies)
  208. quick question (3 replies)
  209. Aftermarket Fuel Screw for the 400ex ??? (14 replies)
  210. Rear carrier.... (8 replies)
  211. Need help finding E- series baffle plates (3 replies)
  212. 426ex smokes for a min.?? (10 replies)
  213. Jet fuel? (12 replies)
  214. new motor break in. (5 replies)
  215. Man, more motor problems!! (10 replies)
  216. that 4 stroke sound (10 replies)
  217. any tt tracks in? (2 replies)
  218. what brake (4 replies)
  219. Routing your clutch cable (12 replies)
  220. Something wrong with the starting??? (7 replies)
  221. oil tank question (3 replies)
  222. tools (4 replies)
  223. chain adjustment help (4 replies)
  224. front shocks (2 replies)
  225. tuning help (48 replies)
  226. Axle rear nut tightening (9 replies)
  227. 400ex gasket kit? (12 replies)
  228. replacing clutch (44 replies)
  229. Axle question> (4 replies)
  230. 03 400ex jetting help hmf slip on (26 replies)
  231. timming key prob (4 replies)
  232. battery (12 replies)
  233. Serious timing problems (12 replies)
  234. Problems!! (1 replies)
  235. wheel spacers?? (6 replies)
  236. Chain and Sprokets? (24 replies)
  237. 400ex decompression rpoblem (3 replies)
  238. 400ex jet choice (4 replies)
  239. Port & Polish (2 replies)
  240. Need Help Now (12 replies)
  241. to solve my intake issues... (9 replies)
  242. worried (7 replies)
  243. honda 400ex idling problem and with jets (4 replies)
  244. Rebuild time? (12 replies)
  245. Service Manuals & Owners Manual CHEAP (5 replies)
  246. 426 build going good (5 replies)
  247. engine ? (28 replies)
  248. Anhy one know where to find this? (17 replies)
  249. upper control mod question (4 replies)
  250. Need pictures of a Quad (30 replies)