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  1. EX Jetting ? (6 replies)
  2. Axle nut question (5 replies)
  3. Main Jet (20 replies)
  4. removing axlenut (4 replies)
  5. Motor swap suggestions-whats best? (20 replies)
  6. big bore? (9 replies)
  7. Clicking! (2 replies)
  8. gt thunder (5 replies)
  9. Air/Fuel Screw ( Happy Day ) (3 replies)
  10. misses when riding wheelies (11 replies)
  11. Cylinder Head Cover Bolt Snapping (12 replies)
  12. CRF stalling (1 replies)
  13. WHen ur 400ex is in the air.. Is the wheels suposed to turn when clutch is pulled in? (6 replies)
  14. 400ex (6 replies)
  15. 250x jet kit wut to do!??!? (1 replies)
  16. Terrible CLICKING noise..Help! (3 replies)
  17. YZ125 Jets? (0 replies)
  18. r-4 header question (5 replies)
  19. After market bearing carrier (5 replies)
  20. chain replacement (8 replies)
  21. Which exhaust?? (6 replies)
  22. 42 pilot actual size (1 replies)
  23. Can't get neutral (6 replies)
  24. Jetting problem (2 replies)
  25. 400 ex = 400 xr engine? (1 replies)
  26. Sparks 8-plate clutch kit (7 replies)
  27. drilling out pilot jet (13 replies)
  28. K&n Xstream Powerlid (2 replies)
  29. Pimping (0 replies)
  30. making a trip up to nacs... (10 replies)
  31. slip on? (4 replies)
  32. Rejet for new piston???? (1 replies)
  33. New clutch perch on a 400EX? (8 replies)
  34. air box lid (8 replies)
  35. will my exhaust pass? (1 replies)
  36. cdi box (5 replies)
  37. high rpm cutout solved (0 replies)
  38. Blown top end on 416ex (3 replies)
  39. jetting help! (7 replies)
  40. I'm stumped....need help (16 replies)
  41. Anyone dyno there 416? (12 replies)
  42. axlenut help (14 replies)
  43. Need Good Engine Builder Around MI, OH, IN (13 replies)
  44. 400EX Chain slack and tooling (2 replies)
  45. Honestly 400ex or kfx400?? (14 replies)
  46. oil decision (18 replies)
  47. best carb for a mojave (1 replies)
  48. DR cylinder (1 replies)
  49. 300ex rev box (4 replies)
  50. 12.5:1 vs 11:1 Compression on 440EX (11 replies)
  51. What's wrong? (8 replies)
  52. Boyseen reeds (0 replies)
  53. 400ex choke removal (6 replies)
  54. FST's website (24 replies)
  55. would this fit?? (3 replies)
  56. Wiseco high compression 416 piston (7 replies)
  57. lt 250r needle jet (1 replies)
  58. smoking? ...... (8 replies)
  59. 250r fuel mixture (5 replies)
  60. rear caliper (1 replies)
  61. 250r fluids (11 replies)
  62. sprockets/tire ratio? (1 replies)
  63. Nitros Oxide (3 replies)
  64. new clutch (0 replies)
  65. 400ex exhaust (1 replies)
  66. my clutch is too tight (12 replies)
  67. Another Jetting question, Do I need jetting? (1 replies)
  68. changing cdi box (3 replies)
  69. pipe? (1 replies)
  70. Please help, my 300ex wont start (3 replies)
  71. Want a kick *** quad. (1 replies)
  72. Chain length for 36t. rear sprocket? (3 replies)
  73. what clutch perch/lever (21 replies)
  74. valve clearance (3 replies)
  75. Need some help with a spark plug? (5 replies)
  76. i Gotta question? (0 replies)
  77. starter clutch ? (2 replies)
  78. 300 ex head cover leaks need help (4 replies)
  79. yz conversian to 300 (3 replies)
  80. stock bored carb question (14 replies)
  81. idle - mid jetting question? (1 replies)
  82. mega max muffler, HELP (20 replies)
  83. jetting question (8 replies)
  84. Its a great cam (0 replies)
  85. pipe's (2 replies)
  86. 400ex HRC cam info (11 replies)
  87. Adjusted valves = weaker? (2 replies)
  88. Need 400 motor advice...... (20 replies)
  89. ceramic coating (11 replies)
  90. Rockers (3 replies)
  91. Blown Motor (17 replies)
  92. sprocket and chain kit ? (2 replies)
  93. TC racing pipe (3 replies)
  94. What size jet for 300EX? (1 replies)
  95. Need Help!!! (1 replies)
  96. Cheapest 250R? (12 replies)
  97. 2 Ride or not 2 Ride (4 replies)
  98. Lectron Carb-universal? Fit KFX? (3 replies)
  99. Bearings and sparks timing key? (2 replies)
  100. Clutch slips, should i change springs only ? (11 replies)
  101. xr80 exchange with xr100 (0 replies)
  102. Big gas tank VS HD head studs for 426 (5 replies)
  103. Dyno Jet Kit or... How much power???? (20 replies)
  104. Cam question?? (2 replies)
  105. 330 kits (23 replies)
  106. Proper bearing carrier instalation (3 replies)
  107. recommended upgrades (10 replies)
  108. stock 400ex carb on a 300ex (5 replies)
  109. adjusting throttle-300ex? (18 replies)
  110. weight limit (66 replies)
  111. 400ex, smoking and blowing oil out the exhuast...???HELP (1 replies)
  112. $300 worth of mods (5 replies)
  113. EdleBrock QuickSilver Carb!?!? HELP! (1 replies)
  114. Ticking noise (9 replies)
  115. TC Racing Pipe (5 replies)
  116. big gun rev box (0 replies)
  117. Pipe Shootout - Cast Your Vote (46 replies)
  118. 426 not running up to par!!! (7 replies)
  119. question about the yzf426 motor and crf450?? (19 replies)
  120. HMF with K&N (jetting?) (11 replies)
  121. 400 wont idle at startup (3 replies)
  122. Bearing carrier ? (5 replies)
  123. standerd bore 10:8 or a 416? (9 replies)
  124. dyno jet question (12 replies)
  125. 250r motor (1 replies)
  126. Quick Question (2 replies)
  127. high rpm sputtering (3 replies)
  128. 250R Engine Q. (1 replies)
  129. spark arester (7 replies)
  130. what jets (7 replies)
  131. checking the valves (2 replies)
  132. Connecting rod problems (6 replies)
  133. Aftermarket header, is it worth it? (2 replies)
  134. falt spot in top end (4 replies)
  135. top end Compression pressure (2 replies)
  136. Best kind of gaskets? (8 replies)
  137. exhaust problems (1 replies)
  138. my 416ex blows black smoke wen i start it??WHY?? (8 replies)
  139. feeler gauges (3 replies)
  140. Alum. airbox (8 replies)
  141. 38mm edelbrock price (2 replies)
  142. ct racing exhaust (1 replies)
  143. 400ex exhaust (1 replies)
  144. 16 tooth front (12 replies)
  145. 250r questions (9 replies)
  146. 300 running like crap (8 replies)
  147. Why is it hard to start? (3 replies)
  148. Sputtering (1 replies)
  149. Lectron carburater?good? (1 replies)
  150. quick ??? fast (2 replies)
  151. bah hard starting (1 replies)
  152. oil (14 replies)
  153. carb compatibility? (5 replies)
  154. coolest thing ever (5 replies)
  155. whoever has a clymers 400ex manual and a scannr or digital camera, please read!!!!! (12 replies)
  156. Best place for 250R cases? (6 replies)
  157. FCR 39 Jetting?? (1 replies)
  158. pilot (0 replies)
  159. Who knows how to take off Right crankcase cover on 400ex? I need it in detail... (10 replies)
  160. Hrc Kit Question (1 replies)
  161. Head Lights????? (1 replies)
  162. HELP with Timing chain tensoner (7 replies)
  163. What dealers have DynaTek Igniton in stock? (1 replies)
  164. 300ex jetting (2 replies)
  165. why do people remove the choke?? (3 replies)
  166. powroll 415 kit (3 replies)
  167. HMF exhaust (14 replies)
  168. 500EX or 450R (27 replies)
  169. finaly did it (0 replies)
  170. Different Fuel question (5 replies)
  171. Timing chain tensoner(HELP!HELP!) (7 replies)
  172. tc pipes (5 replies)
  173. 400ex parts fit on a 450r? (0 replies)
  174. sparks verse white bros (4 replies)
  175. 400ex verse rm250 (25 replies)
  176. Just how fast (16 replies)
  177. Ktm 250r (7 replies)
  178. 400ex-yzf 450 Could it be done? (5 replies)
  179. Head gasket ? (3 replies)
  180. E-series pipe pulling discs out (1 replies)
  181. white bros exhaust (1 replies)
  182. weird kind of shaking when in reverse (18 replies)
  183. 400 wont start in gear (8 replies)
  184. Timing chain again (0 replies)
  185. Do I need..... (3 replies)
  186. 400ex ticking(not the valves) (11 replies)
  187. Warning Patch on Back of Seat Cover (0 replies)
  188. Waking the 250ex up! (7 replies)
  189. how good are wb r-4s (11 replies)
  190. Tusk clutch kit review (9 replies)
  191. The 500 kit for $910!! (34 replies)
  192. 450r HELP HELP (4 replies)
  193. 400EX bogs at WOT stab from idle (1 replies)
  194. 400ex Ignition (30 replies)
  195. Does this sound right???? (2 replies)
  196. Clutch Spring? (1 replies)
  197. Think I fried my starter.....HELP!!!! (1 replies)
  198. hollow scratching noise (8 replies)
  199. etting again (7 replies)
  200. CR400 Sprockets on 400EX (10 replies)
  201. TRX250R will a CR250 motor fit? (3 replies)
  202. 250R radiator shield? (3 replies)
  203. sparks x-6 exhaust (13 replies)
  204. battery dead? (1 replies)
  205. 250x best plug (0 replies)
  206. LRD exhaust for 400ex (1 replies)
  207. Tinner's Air Scoops or OMF? (43 replies)
  208. Ex600? (2 replies)
  209. Air Boot (3 replies)
  210. jets (0 replies)
  211. driving me nuts (3 replies)
  212. need a quiet pipe (8 replies)
  213. lectronn carb (0 replies)
  214. web cam or Hotcams stage 1? (36 replies)
  215. Sparks 465 kit (14 replies)
  216. Fuel (23 replies)
  217. WB pipe jetting (1 replies)
  218. take away power (2 replies)
  219. How many BRC members here? (1 replies)
  220. 250ex to 250r conversion (10 replies)
  221. Carb model on 250X (1 replies)
  222. cooling the 400ex motor (22 replies)
  223. Need an oil tank fast!! Where to look online? (3 replies)
  224. loudest pipe (22 replies)
  225. wb pipe (5 replies)
  226. Yet another dumb question... (6 replies)
  227. 400ex to yzf conversion? need directions (1 replies)
  228. TC RACIng!!!!!!!!!!!!!!!!!!!!!!!!! (22 replies)
  229. Pro-Circuit shorty (2 replies)
  230. Installing an FCR Carb (7 replies)
  231. getting a .040 piston got some questions (4 replies)
  232. Ultimate 4 And Edelbrock Carb Problems (2 replies)
  233. Chain and sprocket install. (3 replies)
  234. dirty valve (2 replies)
  235. 300ex vs. 400ex (26 replies)
  236. cheapest place to get hinson inner hub (1 replies)
  237. engine stall when blipping the gas (8 replies)
  238. Water stalling motor (8 replies)
  239. Engine Mods (11 replies)
  240. Gasket where slip-on meets header (9 replies)
  241. Lean Issue - 205 Main and Still Lean - HELP!!! (5 replies)
  242. am i right (0 replies)
  243. Piston color..... lean, rich, ???? (12 replies)
  244. boring case? (7 replies)
  245. How To Properly Break in a Trinity Motor? (4 replies)
  246. Best tire for trails. (4 replies)
  247. 66mph top speed GPS. (12 replies)
  248. 1986 250r going back together with you help (0 replies)
  249. Which pipe should I choose? (6 replies)
  250. Pipe (3 replies)