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  1. speakin of WB CDI's (11 replies)
  2. Best place to buy 11:1 piston w/ XR cam (2 replies)
  3. compression test results? (0 replies)
  4. Whats the best piston to run. (4 replies)
  5. Carb??? (2 replies)
  6. anyone please...300ex spark arrester.....need to know (10 replies)
  7. header pipe question (2 replies)
  8. Pro-Circuit T4 power ? (15 replies)
  9. WB Rev Limiter, Wow! (24 replies)
  10. re-jetting (4 replies)
  11. How excactly do you check your jetting? (2 replies)
  12. 416 kit (11 replies)
  13. 416 vs. Stock Piston (7 replies)
  14. 250ex pipes! help! (1 replies)
  15. XR400 cam benefits (1 replies)
  16. Valve Spring Compressor (13 replies)
  17. Geez another problem (1 replies)
  18. exhaust temps (3 replies)
  19. niks prox piston (5 replies)
  20. Jetting and reading plug- help (1 replies)
  21. 250ex pipe decsision (3 replies)
  22. Compression Test (9 replies)
  23. D & D racing (1 replies)
  24. idea for increased air???? (1 replies)
  25. Cam question (4 replies)
  26. spark plug question (8 replies)
  27. Seem like a good price? (5 replies)
  28. Jet size for my mods? (2 replies)
  29. Plugging air box Holes for mud runs (1 replies)
  30. Carborator Question (2 replies)
  31. 400ex transmission problems ?????? (10 replies)
  32. wow I got a great deal..... (4 replies)
  33. Leaking Carb (2 replies)
  34. what to do....... (3 replies)
  35. Aftermarket silencer too long? (21 replies)
  36. to much air (4 replies)
  37. Puzzled (1 replies)
  38. big gun complete? (4 replies)
  39. piston (1 replies)
  40. how reliable \\\\\\? (0 replies)
  41. Drop in cam for 300ex (7 replies)
  42. what jet should I use with Yoshimura Race pipe? (7 replies)
  43. No juice when key is turned on... (2 replies)
  44. Twist Throttle Intallation (1 replies)
  45. Decisions Decisions(did i spell that wrong) (32 replies)
  46. 416ex crankshaft problem???? (4 replies)
  47. recon (4 replies)
  48. Adjust Throttle Cable (0 replies)
  49. You guys were right--THrottle Adjustment (4 replies)
  50. Help!!!!! Backfire And Drip (18 replies)
  51. FMF Power Core IV Q, How quiet is it? (1 replies)
  52. HRC Piston Installed!! (4 replies)
  53. Help with new Perch and Lever (1 replies)
  54. 400ex smoking when i push throttle (8 replies)
  55. What pipe should i get (0 replies)
  56. curtis sparks timing key (2 replies)
  57. Oil Leak (0 replies)
  58. Spark plug wrench size for 400ex (10 replies)
  59. xr400 cam install (11 replies)
  60. help me adjust my valves- NOW!!! (2 replies)
  61. Installing jets (2 replies)
  62. 250R oil drip from exhaust flange (8 replies)
  63. airbox mods (9 replies)
  64. powerbomb header (10 replies)
  65. It's starting, hehe (1 replies)
  66. Stock Carb and Jets? (4 replies)
  67. 87 250x in too deep (1 replies)
  68. i need help like today (7 replies)
  69. white bros. and power bomb (4 replies)
  70. Camshaft bearing, need help! (3 replies)
  71. Popping out of gear? (7 replies)
  72. e-series jetting? (6 replies)
  73. Question about 300ex jetting Very important!! Please Help!!! (4 replies)
  74. Carb (6 replies)
  75. 440 Question (1 replies)
  76. Graydon Proline Exhaust??? (19 replies)
  77. opinions/suggestions please (6 replies)
  78. Advanced Timing Key (1 replies)
  79. 440 kits? how did you go about it? (5 replies)
  80. valves (3 replies)
  81. EBC clutch? (1 replies)
  82. 300EX will not start!!! (6 replies)
  83. 440 kit = more matnince????? (3 replies)
  84. Advanced timing key (13 replies)
  85. e-series pipe CAN ANYBODY HELP!? (13 replies)
  86. Running lean? (11 replies)
  87. Exhaust for my 250ex... (4 replies)
  88. decelarating popping (11 replies)
  89. 300ex motor work (0 replies)
  90. Q series FMF (13 replies)
  91. How to make a 300ex eat a warrior.. (2 replies)
  92. Snorkle???? (1 replies)
  93. Used FCR (1 replies)
  94. Torque wrench? (1 replies)
  95. Faster Bike, Help? (14 replies)
  96. Big Gun Exhaust? (22 replies)
  97. HRC cam? (19 replies)
  98. starter not working just clicking (4 replies)
  99. 300ex tach (0 replies)
  100. Cheap motor mods for my R??? (4 replies)
  101. Here we go! (6 replies)
  102. +1500 rev kit?? (3 replies)
  103. rev kit ????? (2 replies)
  104. What are Uni Air Vents? (3 replies)
  105. what is the best cleaner to get stains off the moter that got caked on??? help (9 replies)
  106. e-series or fmf?? (17 replies)
  107. What mods.... (4 replies)
  108. Why oh Why? (4 replies)
  109. Pingry Oil Tank (7 replies)
  110. This Is Funny (10 replies)
  111. my white brothers pipe mods. (3 replies)
  112. Which Pipe??? (3 replies)
  113. 400EX Pipe??? (1 replies)
  114. T4 problems (24 replies)
  115. A few mods. for the fun of it........ (5 replies)
  116. Quad wont start (3 replies)
  117. the question asked a thousand times (9 replies)
  118. need immediate help with right case cover on 400ex (22 replies)
  119. noise (5 replies)
  120. uh oh (5 replies)
  121. DOODS, I did something stupid!! (33 replies)
  122. Engine's gonna be opened up (22 replies)
  123. What do you think of the Mega Maxx II Pipe on a 300EX? (6 replies)
  124. Does the K&N Jet Kit have what I need? PLEASE read (4 replies)
  125. Any one have DMC pipe or the System? (8 replies)
  126. What should I do next (1 replies)
  127. je piston packages (2 replies)
  128. What pipes do you have? And what would you recomend for me? (19 replies)
  129. Where to find main jets (5 replies)
  130. Hard Rockers Arms (1 replies)
  131. opinions on 14 tooth sprockets (10 replies)
  132. stiff throttle (5 replies)
  133. Time to upgrade (4 replies)
  134. Do i have to play with air/fuel mixture screw if i put a 42 pilot jet on???? (11 replies)
  135. Ex Question (12 replies)
  136. K&N v/s Uni v/s stock (10 replies)
  137. HELP!!! 400ex wont start or run! (0 replies)
  138. 420ex wooohoooooo (5 replies)
  139. Shop problems, HELP! ! (10 replies)
  140. Someone know the Compression(psi) of a stock 400ex (2 replies)
  141. 300ex pipe install question (7 replies)
  142. curtis sparks carb mod for 400ex (0 replies)
  143. hydraulic clutch install! HELP! (2 replies)
  144. fcr (0 replies)
  145. 416EX kit? (53 replies)
  146. Jetting w/ K&N & Supertrapp IDS2 (1 replies)
  147. Clutch spring bolt torque? (0 replies)
  148. 300ex piston (2 replies)
  149. Oil drained on rebuild (5 replies)
  150. Do I need a jet kit? (11 replies)
  151. Yoshimura bolt on (10 replies)
  152. 440 or 416? (8 replies)
  153. Best 300ex Exaust? (2 replies)
  154. After Market Air Box ? (24 replies)
  155. engine sputtering problems? (3 replies)
  156. what mods for less ca$h? (18 replies)
  157. spark plugg coming loose (5 replies)
  158. Raptor Race (7 replies)
  159. Which Cam for 300EX? (1 replies)
  160. New guy (1 replies)
  161. Question (440EX) (9 replies)
  162. I need some last input on this cam subject!! (6 replies)
  163. Clutch replacement on 01 400EX (2 replies)
  164. oil filter cover bolt (0 replies)
  165. kick starter (8 replies)
  166. XR 400 cam (7 replies)
  167. best pipe for a 300ex ? (8 replies)
  168. Void warranty (14 replies)
  169. 14 T (5 replies)
  170. Anybody Ported and Polished their quad? (11 replies)
  171. hp ? 330 kit, 11-1 .080 piston (2 replies)
  172. 2 Questions in 1 post (airbox & exhaust) (8 replies)
  173. Timing chain (1 replies)
  174. is a 300EX Chain a 520 or 530? (4 replies)
  175. plug fouling with new pipe on 400ex:confused: (6 replies)
  176. Hey Leo (4 replies)
  177. 400ex stalls (15 replies)
  178. Time to mod my 300EX,what to get? (3 replies)
  179. motor work (5 replies)
  180. 305 cc kit? (15 replies)
  181. Please help! What jet? (2 replies)
  182. What Would Happen??? (8 replies)
  183. what is the best pipe for my friends 250x? (5 replies)
  184. Rasing the needle? (2 replies)
  185. 406ex (3 replies)
  186. Piston ??'s (2 replies)
  187. 4 stroke Reeds????????????? (7 replies)
  188. More Horsepower?? (4 replies)
  189. Which pipe 2 get??? (26 replies)
  190. jetting stock 400ex carb (0 replies)
  191. What to do next (9 replies)
  192. Aftermarket cam owners! (9 replies)
  193. Dome Top Air Box & Block Off Plug (4 replies)
  194. 400 EX manuals (5 replies)
  195. Sprockets (0 replies)
  196. Honda problem (1 replies)
  197. fcr or the edelbrock quicksilver carb (4 replies)
  198. lectron carb (3 replies)
  199. final mod do u guys rec this (22 replies)
  200. spark plug boot (2 replies)
  201. Supertrapp Ids2 (8 replies)
  202. new top end vs crank bearing (2 replies)
  203. 250r Keihin carburator on 400ex (3 replies)
  204. Rejetting with open airbox. (8 replies)
  205. Help!! 300ex not running! (3 replies)
  206. How does this Sound???? (8 replies)
  207. tether kill switch problems... (7 replies)
  208. Max size increase? (2 replies)
  209. Hey jet Question where can I buy them PLEASE HELP (5 replies)
  210. Is Changing Clutch Plates Hard? (6 replies)
  211. Hello and a question about re-jetting (9 replies)
  212. 87' yamaha "pig hair"- carb ? (4 replies)
  213. xr250 cdi box? (17 replies)
  214. Quick Valve Q (1 replies)
  215. xr400 or gtthunder cam? (17 replies)
  216. Hard Start (2 replies)
  217. Need clutch help (11 replies)
  218. Engine combo price?? (7 replies)
  219. jetting question (1 replies)
  220. best exaust for 400ex??? (10 replies)
  221. Modified Carb (9 replies)
  222. Companies to bore (2 replies)
  223. Oil Change? (8 replies)
  224. Modded stock exhaust (11 replies)
  225. New Rules for National MX Racing (2 replies)
  226. LRD pipe and FMF (4 replies)
  227. What does the FCR carb come with? (16 replies)
  228. Octane Q (16 replies)
  229. pipes?do they help? (5 replies)
  230. names (8 replies)
  231. 350X oil cooler on 300EX (19 replies)
  232. Radiator Leak? (3 replies)
  233. Which Cam?? (1 replies)
  234. Bad muffler design!!!! (12 replies)
  235. Oil?what Is The Best? (2 replies)
  236. i have a question on the edelbrock carb and the keihin carb for a 400ex (8 replies)
  237. 440ex piston break in (6 replies)
  238. Need carb help (0 replies)
  239. Red Rooster300 Or anyone else who knows about 300s (5 replies)
  240. 12.5:1 or 11:1 (1 replies)
  241. TC pipe (13 replies)
  242. Torque (0 replies)
  243. 16t Sprocket (14 replies)
  244. Fcr ? (3 replies)
  245. FMF Megamax 2 exhaust (5 replies)
  246. cams (11 replies)
  247. turbo charged raptor (14 replies)
  248. Which cam (0 replies)
  249. Cometic gaskets (1 replies)
  250. 465 kit "Anyone" (14 replies)