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  1. Engine turning over (3 replies)
  2. airbox (2 replies)
  3. Jetting (3 replies)
  4. 440 kit (2 replies)
  5. Rejetting needed for a cam? (4 replies)
  6. TC exhaust (3 replies)
  7. Ring end gap (6 replies)
  8. 400ex NEED MORE TOP SPEED HELP ME (8 replies)
  9. Chain won't stay tight (14 replies)
  10. white brothers head pipe (1 replies)
  11. 440 to 426 (6 replies)
  12. 350x carb (2 replies)
  13. high comp piston (1 replies)
  14. How to keep up with the 450's (15 replies)
  15. What is the best? (13 replies)
  16. Fitch fuel catalyst (7 replies)
  17. 250r clutch problem (4 replies)
  18. carbonized head (2 replies)
  19. 250r 310 kit (9 replies)
  20. REV BOX Question.... (7 replies)
  21. good cannondale? (7 replies)
  22. honda carburetor (10 replies)
  23. E-series not loud enough (32 replies)
  24. choke? (1 replies)
  25. Extremely stiff clutch (8 replies)
  26. Engine temp (4 replies)
  27. i need fast help (1 replies)
  28. front sprockets (7 replies)
  29. gearing (0 replies)
  30. spark plugs? (2 replies)
  31. what is the best overbore for a 400 (33 replies)
  32. exhaust advice (0 replies)
  33. other inexspensive mods to 40ex (2 replies)
  34. 400 EX Jetting - Please Help! (7 replies)
  35. High compression 300ex piston (7 replies)
  36. 2005 400ex (13 replies)
  37. similar gearing from 22s-20s (1 replies)
  38. Just bought a 03 300ex (1 replies)
  39. Oil around/near spark plug...help (15 replies)
  40. 300EX question (1 replies)
  41. need help quick (1 replies)
  42. 2000 Foreman S 400 tranny problem (7 replies)
  43. Wait Up Banshee!!!!!!!! (10 replies)
  44. should i beable to take a Z (44 replies)
  45. Is this a jetting issue? (16 replies)
  46. carb jetting (1 replies)
  47. Exhaust (2 replies)
  48. 250ex w/ HMF-slipon (3 replies)
  49. Motor noise (4 replies)
  50. 400ex rod (7 replies)
  51. anybody running nos?? (4 replies)
  52. 300EX love and hate (2 replies)
  53. another question on a friends 400ex about the starter (1 replies)
  54. Dumb Question (3 replies)
  55. Whoever knows about motors, Please Help........ (19 replies)
  56. wiseco hotrod (1 replies)
  57. 12.5 comp piston (2 replies)
  58. 300 power (0 replies)
  59. wont start (12 replies)
  60. burn the man fusible (4 replies)
  61. Ebay Chain! Anyone Try One? (4 replies)
  62. 300 hp (6 replies)
  63. Will A Xr 650 motor Bolt up to A 400 ex frame?? (3 replies)
  64. 350x clutch cable (0 replies)
  65. blaster needs help (2 replies)
  66. bearing carrier question (5 replies)
  67. K&N or UNI???? (27 replies)
  68. how bad is this curtis sparks exhaust ::pics:: (15 replies)
  69. 450r Carb (2 replies)
  70. Wanted stock 450r carb (2 replies)
  71. any websites that sell header bolts (3 replies)
  72. question on boreing a cylinder (10 replies)
  73. lrd pipe question (4 replies)
  74. 400ex wont run!!!!!!!!!!!! (21 replies)
  75. How To Tune The Ti-4 End Caps (1 replies)
  76. first gear (2 replies)
  77. Building a 400ex race engine (2 replies)
  78. Anyone have 200x knowledge (1 replies)
  79. Need power!! (11 replies)
  80. quick HMF question (4 replies)
  81. keep up with 400ex's (13 replies)
  82. ceramic coated header (7 replies)
  83. best cam for mx (6 replies)
  84. Main Jet baffle? (3 replies)
  85. need help quick!!! (3 replies)
  86. popping,sputtering, and looseing power(450r) (1 replies)
  87. This is a MUST READ.. Very Crazy.. (6 replies)
  88. need help deciding?? (8 replies)
  89. carb questions (0 replies)
  90. Need help (0 replies)
  91. Help with Main Jet install (0 replies)
  92. Help with Main Jet Install (6 replies)
  93. Valve seal + Clutch Help? (11 replies)
  94. Rocker arm question (2 replies)
  95. Rough-running 250X (4 replies)
  96. outerwears (2 replies)
  97. help with gearing (1 replies)
  98. argh, 300ex jetting (11 replies)
  99. 440ex carb jet settings (4 replies)
  100. Bearing carrier (5 replies)
  101. electric carbs (3 replies)
  102. which is louder? (2 replies)
  103. Powroll engines? (10 replies)
  104. hmf (4 replies)
  105. Pappy (3 replies)
  106. Whos got a 465 (2 replies)
  107. Jetting (10 replies)
  108. need some advice w/ my rebuild (3 replies)
  109. jetting on my 400ex (5 replies)
  110. is it bad to rejet a stock bike (2 replies)
  111. Battery HELP!` (2 replies)
  112. oil tank cracking? (10 replies)
  113. What's the stock jetting for an 87 250X? (9 replies)
  114. blowing alot of white smoke (4 replies)
  115. 400ex engine mods..what to do? (12 replies)
  116. gearing for xc (1 replies)
  117. holy cow (3 replies)
  118. powroll engine kit for 250ex (13 replies)
  119. Jetting (2 replies)
  120. lrd pipe? (2 replies)
  121. head pipe gaskets (3 replies)
  122. What Kind Of Hp?? (0 replies)
  123. need 250x HELP FAST! (2 replies)
  124. High RPM loss of power & vibration! HELP! (3 replies)
  125. fcr 41 mm on a 400ex (8 replies)
  126. air box lid? (9 replies)
  127. TC Cams (3 replies)
  128. DSP Power Now Valve? (8 replies)
  129. FCR or EDELBROCK? (2 replies)
  130. Sea level carb jetting (4 replies)
  131. Oil cooler (21 replies)
  132. Tranny gear mods (5 replies)
  133. Kill Switch (1 replies)
  134. Rear brake Caliper Will not Disingauge-Help me if you can? (8 replies)
  135. bearing carrier (1 replies)
  136. rebuild (4 replies)
  137. Big Bore Kit/ Honda (6 replies)
  138. Valve torques (3 replies)
  139. 250x top end rebuild (4 replies)
  140. Front Sprocket/Rear tire Question (7 replies)
  141. 300ex dies in water (2 replies)
  142. 400ex Air Filters (14 replies)
  143. What jet kit? (2 replies)
  144. Ceramic Coating? (1 replies)
  145. How to beat the crf450 motor!!?!?!? (12 replies)
  146. best piston for 416 (6 replies)
  147. mild power (11 replies)
  148. 400ex dyno'd today!!! (34 replies)
  149. hub nut (4 replies)
  150. 300ex to 250x (5 replies)
  151. HMF jetting (5 replies)
  152. Destroyed front sprocket.. now what (6 replies)
  153. wierd sound (2 replies)
  154. Carb Questions (0 replies)
  155. 400 crf 450 motors (11 replies)
  156. More Power?!?! (2 replies)
  157. Gear Selection Problem 450R (0 replies)
  158. New chain Old sprokets? (6 replies)
  159. honing nikasil (14 replies)
  160. what 300 exhaust (0 replies)
  161. how do i switcch (1 replies)
  162. big gun rev box (12 replies)
  163. Is this plug too lean or just right? (11 replies)
  164. valve adjustment 250sx (0 replies)
  165. Question about pro circuit t4 please help (1 replies)
  166. pro circuit t-4 (1 replies)
  167. Stroking? Cheap power? (15 replies)
  168. Chain length/ tensioner (1 replies)
  169. how loud (2 replies)
  170. 400ex pipe help (7 replies)
  171. Engine Nocking during break -in (24 replies)
  172. 400 Ex HMF Exhaust (15 replies)
  173. I need to find an aftermarket oil cooler for a crf450! (4 replies)
  174. Installing 440 kit need help (4 replies)
  175. Major 300ex Problems!!! (11 replies)
  176. 350x won't start (7 replies)
  177. jetting (2 replies)
  178. pingel killswitch for 400ex (5 replies)
  179. 400ex cutting out <asap> (11 replies)
  180. wireing diagram for a 400 ex (1 replies)
  181. Big Gun (7 replies)
  182. 400ex top end issue help advice (2 replies)
  183. my motor is smoking (14 replies)
  184. rear spocket (1 replies)
  185. what size is my motor (2 replies)
  186. 406 (4 replies)
  187. titanium4 or hmf qs1 (14 replies)
  188. No longer unsolvable,, No longer ongoing problem (3 replies)
  189. 400ex motor smoking (3 replies)
  190. Jet Sizing (1 replies)
  191. Clutch problem (1 replies)
  192. Cold blooded 250x (11 replies)
  193. shocks (2 replies)
  194. 416 already seized.. (51 replies)
  195. 400 ex battery (5 replies)
  196. Sprocket (9 replies)
  197. 426 Kit (3 replies)
  198. hop up on a 400ex (4 replies)
  199. Sand Tires??? (2 replies)
  200. 416 price? (4 replies)
  201. Stock Bore?? (5 replies)
  202. 400ex axle into a 450r (2 replies)
  203. problem with 250ex stumbling (2 replies)
  204. Trx70 Help Please (4 replies)
  205. Hrc Kit! (2 replies)
  206. quick pipe questions (12 replies)
  207. 400ex light bulbs (0 replies)
  208. needin your help on porting/jetting (4 replies)
  209. slow starting (6 replies)
  210. ReJetting for Outerwear (3 replies)
  211. radiator (1 replies)
  212. DMC or CT or SPARKS (6 replies)
  213. Exhaust Jetting on 400ex (9 replies)
  214. 406 higher comp ratio (2 replies)
  215. 300ex TC Pipe (16 replies)
  216. 440ex (8 replies)
  217. opinion on 400 to 416 (4 replies)
  218. cams (3 replies)
  219. CDI help (1 replies)
  220. Heavy Duty Cam Chain & Head Bolts were to get (12 replies)
  221. supertrap (1 replies)
  222. piston on stock motor! (4 replies)
  223. '97 300ex crapped out (7 replies)
  224. ReJetting for Outerwear Airlid??? (7 replies)
  225. 14 Tooth Sprocket on 400ex (20 replies)
  226. Race Gas (3 replies)
  227. Cam for 300EX (3 replies)
  228. What pipe for my 300EX (5 replies)
  229. how many disks should i run (4 replies)
  230. Need Help!!! (0 replies)
  231. what pipe for my 400ex (15 replies)
  232. Cylinder Stud (4 replies)
  233. Pro Circuit Exhaust Help!! (17 replies)
  234. 2005 400ex new 38mm carb (26 replies)
  235. 250ex pipe question (1 replies)
  236. 400 EX Motor Work (10 replies)
  237. Suzuki LT 125 Compression Check (1 replies)
  238. Mobile Dyno Services (2 replies)
  239. 2005 400ex tranny (1 replies)
  240. best 400ex pipe (24 replies)
  241. WR cam in 400ex (3 replies)
  242. any way to seal header? (0 replies)
  243. which cdi box for the 400ex (18 replies)
  244. 300 pipe (16 replies)
  245. whats stuff for racing (0 replies)
  246. 300/350x carb (2 replies)
  247. 350x valve adjustment (0 replies)
  248. BAD grinding noise, Please Help (4 replies)
  249. Chain Tension Specs (4 replies)
  250. please help my quad wont run right (3 replies)