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



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  1. 400 EX (426) rebuild carb/ fueling issue (1 replies)
  2. 400ex stroker piston (2 replies)
  3. Accelerator pump cover Q (5 replies)
  4. Need new ball joints, anyone know what a-arms these are? (1 replies)
  5. Hellooooooooo!!!!!!!!!!!!!!!! (16 replies)
  6. Carb Leaking (4 replies)
  7. Rear end crunching/grinding sound (3 replies)
  8. Need new swingarm? (4 replies)
  9. Ever have to replace SWITCH ASSY., STARTER MAGNETIC 35850-HM3-000 ? (7 replies)
  10. Trail tech vapor dashboard kit for 07 400ex (1 replies)
  11. Big gun rev box running horrible (2 replies)
  12. Is this bottom end put together correctly? (0 replies)
  13. Can anyone identify this cam? (1 replies)
  14. Rough sealed bearings from factory (0 replies)
  15. Headlight adjustment screws/bolts size? (0 replies)
  16. Loud ticking that goes away once warm (4 replies)
  17. Aight let's hear how many modded ex's are no starting mfrs ?? Redik (12 replies)
  18. Hot Cams Stage 2 question (2 replies)
  19. Where can I find...... (2 replies)
  20. 400ex beats 450's in drag.. stock bore and stock stroke 400ex (3 replies)
  21. Help with snorkel tube? (1 replies)
  22. Halos for the EX ? Anyone have some or a company that makes them ? (0 replies)
  23. FCR 39 jetting? (0 replies)
  24. Red Pipes (2 replies)
  25. 07 400ex trail tech dash/vector computer (0 replies)
  26. Piston question (10 replies)
  27. 00 stock ex engine question (1 replies)
  28. 01 400ex rebuild questions (5 replies)
  29. Chain Probs (1 replies)
  30. What size fcr carb to use for a 440ex? (5 replies)
  31. Iiiiii'mmmmmm baaaaccckkk (9 replies)
  32. EVENT: MidWest 400ex Bash - Laurel, Indiana - Oct. 14-16 (3 replies)
  33. 450r carb for your stock or an smaller fcr... (2 replies)
  34. Headlight Wiring Issue (1 replies)
  35. Engine rebuild take two (5 replies)
  36. Need some opinions on diagnosing engine failure (6 replies)
  37. engine problems (1 replies)
  38. Back to sport quads and the 400. Trail build time. (18 replies)
  39. !!!!!!!!!!!!!!!!!!!need help!!!!!!!!!!!!!!!!!!!!!!@&&@&' (2 replies)
  40. Finally time to rebuild (19 replies)
  41. Oil change intervals. (4 replies)
  42. How to get title (1 replies)
  43. Battery not chArging how to test stator or regulator? (1 replies)
  44. Replacement TRX400EX handlebars? (8 replies)
  45. 2000 400ex update help (2 replies)
  46. WTB 400ex parts (1 replies)
  47. Brighter headlights? (2 replies)
  48. Whats the best pipe (5 replies)
  49. Painting A-arms (5 replies)
  50. 400ex motor mods??? (4 replies)
  51. Sponsorship resume? (0 replies)
  52. 400ex for Beachcross (1 replies)
  53. 400EX vs. 450r for amature XC racing (9 replies)
  54. maxxis razr (2 replies)
  55. cst ambush (3 replies)
  56. 440 jetting (2 replies)
  57. Good +3 a arms? (1 replies)
  58. aftermarket gas cap wont stay put (3 replies)
  59. tear down (1 replies)
  60. Got back into the game (21 replies)
  61. homemade 400ex with cr250 motor and seat mod (6 replies)
  62. 400ex clutch/trans question (4 replies)
  63. Aftermarket Shocks (2 replies)
  64. Fresh rebuild, problems starting (16 replies)
  65. Warning labels / plates (0 replies)
  66. 2005 400ex bogging issues (8 replies)
  67. wtb 04 400ex part (1 replies)
  68. 450r shocks for xc (8 replies)
  69. Suspension Help (4 replies)
  70. i need a quick measurement (0 replies)
  71. 400EX Clutch Issue (0 replies)
  72. 400ex rebuild problems! (3 replies)
  73. G4 Graphics contact info? (0 replies)
  74. Bill ballance Lrd attitude aluminum frame/subframe- honda 400ex (2 replies)
  75. 400ex tires (3 replies)
  76. Xc 400ex (5 replies)
  77. 400ex bearing carrier question (2 replies)
  78. 400ex decided to stop starting (21 replies)
  79. Carbon Fiber" Clutch? (1 replies)
  80. bearing carrier question (1 replies)
  81. 400ex throttle (2 replies)
  82. What can a stock 400ex crank/rod handle power-wise? (10 replies)
  83. Should I? (1 replies)
  84. Real 400ex upgrades? (25 replies)
  85. 400ex exhaust (2 replies)
  86. help me pick a tire to try out! (8 replies)
  87. 400ex valves(again) (2 replies)
  88. honda trx300ex 2007 four wheeler frame (0 replies)
  89. 400ex valves (3 replies)
  90. DUI while riding? (4 replies)
  91. Overheating? (6 replies)
  92. 2000-lonestar-440ex-honda- (0 replies)
  93. ex not charging the battery (1 replies)
  94. 02 400EX in need of help (6 replies)
  95. Oil foaming in my 400 (4 replies)
  96. ex issues (11 replies)
  97. Aftermarket Rear Shock (3 replies)
  98. 400 (5 replies)
  99. help with 03 400ex smoke... (2 replies)
  100. engine dies at high speed (2 replies)
  101. Stroked problems (3 replies)
  102. Will 10x6 wheels fit front of TRX 300EX? (2 replies)
  103. Customs Decals Or Stickers Needed?? (0 replies)
  104. stronger shift lever? (5 replies)
  105. WTB Cam Gear/Sprocket and bolts (5 replies)
  106. 400ex bogging issue (dont think its carb related) (6 replies)
  107. Slip On Exhaust ??? Help me choose (2 replies)
  108. 400ex nerfs vs. heel guards. (9 replies)
  109. 400ex leaking from lifter cover help!!! (6 replies)
  110. rev box? (7 replies)
  111. my rebuilt crank with carrillo rod (11 replies)
  112. Engine Whining noise - 2005 400ex (2 replies)
  113. New 400ex owner, have some questions (4 replies)
  114. Looking to buy rear aftermarket 400ex shock (3 replies)
  115. Lrd aluminum frame - 400ex (2 replies)
  116. honda 400ex clutch question (23 replies)
  117. 2005 426EX woes (4 replies)
  118. Molykote assembly lube (3 replies)
  119. Spindle/Ball Joint Issue (2 replies)
  120. 2005 400ex running crappy when warm (3 replies)
  121. Trade stock 450r shocks for Elka's? (6 replies)
  122. CT Racing Exhaust - Revised Design (15 replies)
  123. Lightend flywheel and 450r carb adapters (1 replies)
  124. help reject or no reject after adding a slip on? (1 replies)
  125. Stock flywheel weight (3 replies)
  126. New to hare scrambles/XC scene (19 replies)
  127. ARP head studs? (3 replies)
  128. 2005 trx400ex (2 replies)
  129. Jet recommendation for 400X with K&N / HMF Exhaust (2 replies)
  130. 400ex motor (0 replies)
  131. CDI/REV Box? (16 replies)
  132. 99-04 05 Up Starter Differences (1 replies)
  133. Electrical Woes (6 replies)
  134. 400ex clutch wont fully disengage (1 replies)
  135. stroked 400ex locking up at TDC (2 replies)
  136. 400ex clutch hard to pull (2 replies)
  137. F/S:Brand New Apple iPhone 6 Plus 16GB.$450..Email: globaltec@schemertics.com (0 replies)
  138. 2001 trx400ex carb issue? (4 replies)
  139. 2001 Honda 400ex Exhausts? (12 replies)
  140. '03 400ex (1 replies)
  141. looking for information on locking gascaps (0 replies)
  142. 416 EX decals???? (2 replies)
  143. 2001 400ex wiring problem! (0 replies)
  144. Stock 400ex 99-04 Skidplate Question (4 replies)
  145. Right Front Brake is Sticking. (3 replies)
  146. white brothers Cdi (23 replies)
  147. will HD valve springs make engine rev slower (0 replies)
  148. What do you do in the winter? (7 replies)
  149. 400ex engine difference???? (1 replies)
  150. 400ex Headlight/Tail Light problem (1 replies)
  151. XR / 400ex exhaust differences (3 replies)
  152. parts (0 replies)
  153. 400 ex tranny problems ? (1 replies)
  154. Haven't been on here in a while (2 replies)
  155. 400ex front race cut fenders. (1 replies)
  156. 400ex front race cut fenders. (0 replies)
  157. cleaning the side of the engine?? (10 replies)
  158. 400ex service manual..... (4 replies)
  159. 6 hour XC race (6 replies)
  160. 450R carb spec questions (0 replies)
  161. Finished disassembling top-end (6 replies)
  162. valves wont fit in new valve guides? (4 replies)
  163. TRX 90 ignition switch mount for aftermarket handlebars (1 replies)
  164. pics of the old 440ex drag bike (6 replies)
  165. Not your typical exhaust thread (11 replies)
  166. 450r Rear Conv. Sprocket Misalignment Photos (5 replies)
  167. Aftermarket front/OEM Rear plastic compatibility (6 replies)
  168. Sponsors! (0 replies)
  169. chain recommendations for a 40400ex (4 replies)
  170. 400ex gearing question (3 replies)
  171. Looking for 400ex swing arm bushings- not bearings. (3 replies)
  172. building a snappy 400ex motor? (8 replies)
  173. Decompression Plunger Sticking (5 replies)
  174. Stock 450r Shocks (0 replies)
  175. Long travel front setup for XC-400ex (12 replies)
  176. lrd framed 400ex (2 replies)
  177. ideas for frame powdercoat color (8 replies)
  178. 400ex ball joint boots! (1 replies)
  179. YFZ450 shocks on a 400ex (38 replies)
  180. Airbox Snorkel Plug (1 replies)
  181. 05 trx 400 ex no spark PLEASE HELP (1 replies)
  182. XC arms (20 replies)
  183. Anybody ever resleeve their cylinder? (without taking to a machine shop) (28 replies)
  184. Is there any way I could convert my 2013 to the old body style from 99-04? (2 replies)
  185. 2008 tranny problem. I'm stumped (3 replies)
  186. Swing arm swap (1 replies)
  187. 7 years and I finally broke third gear. (5 replies)
  188. Hi, new guy here with a 2000 440ex (13 replies)
  189. What year did the TRX400EX come with 'BLACK' plastics? (4 replies)
  190. Hill Climbing Anyone? (8 replies)
  191. borich or fowler? 2014 gncc champ (6 replies)
  192. Swinger Skid Options (28 replies)
  193. 416ex jetting (7 replies)
  194. dressed up my wheels (4 replies)
  195. Clutch!? (21 replies)
  196. Bumper Issues (4 replies)
  197. Getting Rid of the Headlight (6 replies)
  198. trx 400x bar setups (11 replies)
  199. 400ex stock carb flange size (2 replies)
  200. new atv vid coming out! Dig! (6 replies)
  201. 400ex carb help (14 replies)
  202. rear bearing carrier (11 replies)
  203. crankshaft the same for all year models? (3 replies)
  204. Quick Question (3 replies)
  205. 01 400ex questions (12 replies)
  206. Aftermarket slip on (7 replies)
  207. Rear Axle Nut (2 replies)
  208. Oil coming from around front sprocket (2 replies)
  209. New Lrd framed - roll design 400ex for sale (0 replies)
  210. jetting questions plz help. (1 replies)
  211. Bearings (1 replies)
  212. HMF Competition Full Exhaust Muffler & Jet Kit + Uni filter Jetting (8 replies)
  213. big Al (7 replies)
  214. Spark plug only half colored (10 replies)
  215. New Exhaust!!!! Duncan or Sparks? (3 replies)
  216. 400ex build (2 replies)
  217. 400ex XC/BX/MX build. (15 replies)
  218. 400ex sway bar needed (0 replies)
  219. WTB Duncan Front bumper (2 replies)
  220. 99 400ex rebuild all advice is greatly appreciated (4 replies)
  221. 1997 honda 300ex wont start from the push start button (0 replies)
  222. Curtis Sparks slip on with White Brothers header (1 replies)
  223. want sell my edelbrock quick silver carb (1 replies)
  224. 400ex no compression! (47 replies)
  225. engine rebuild jetting question (3 replies)
  226. let's see em (0 replies)
  227. great video for build ideas (0 replies)
  228. Swingarm bearing and collar (2 replies)
  229. Swingarm bearing and collar (0 replies)
  230. Swingarm bearing and collar (0 replies)
  231. New (to me) '05 400ex **questions** (23 replies)
  232. 400ex parts (0 replies)
  233. C-clip to hold front sprocket? (12 replies)
  234. Is there any better option for the 400X's seat? (4 replies)
  235. Ignition Booster (9 replies)
  236. in bad need of some carb advice (13 replies)
  237. WTB 400ex slip on (8 replies)
  238. advice with inline oil cooler mod. (2 replies)
  239. Need measurement (1 replies)
  240. Electrical issue 2001 (2 replies)
  241. Extended A-arm measurments (0 replies)
  242. carb help! (1 replies)
  243. Quadtech hoods and Fullbore plactics?!? (5 replies)
  244. head questions (2 replies)
  245. Will these hand guards fit? (4 replies)
  246. stage 3 cam? (2 replies)
  247. manual cam chain tensioner (4 replies)
  248. Jetting advice (9 replies)
  249. HELP with Head Gasket Replacement!?! (2 replies)
  250. Destroyed my motor (26 replies)