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  1. 440 jetting (9 replies)
  2. Oil question??? (3 replies)
  3. Anybody running a Lectron carb on your 400ex? (1 replies)
  4. Ticking from engine, How loud should it be (6 replies)
  5. Who has the most power????? (0 replies)
  6. Fcr Group Buy (4 replies)
  7. a couple of questions (1 replies)
  8. Cam (3 replies)
  9. aftermarket headpipe??? (5 replies)
  10. I Want My 300 To Run Fast~!!!!!!! (9 replies)
  11. WB pipe (3 replies)
  12. swing-arm bolt (4 replies)
  13. best pipe for 300ex? (10 replies)
  14. FCR Info Update (2 replies)
  15. 250X troubles ? Help Please ! (1 replies)
  16. Need your opinions on my 250X (1 replies)
  17. DS650 Carb on a 400ex (3 replies)
  18. exhaust (1 replies)
  19. What Cam for 300EX???? (14 replies)
  20. exhaust (0 replies)
  21. 330 kit question (1 replies)
  22. Crancase Breather box (0 replies)
  23. Excuse my ignorance (7 replies)
  24. Golden West Cycle???? (4 replies)
  25. Can anyone tell me what pipe this is (21 replies)
  26. Pro Circuit T-4 QUESTION!!! :) (17 replies)
  27. Stock HI comp. bore/ XR cam?? (12 replies)
  28. 250x won,t start still. (2 replies)
  29. 300EX intake (4 replies)
  30. Back pressure (1 replies)
  31. NOS, Anyone using it? (25 replies)
  32. boring to 330 (1 replies)
  33. CDI Box?? (18 replies)
  34. 400ex carb on 300ex? (6 replies)
  35. im getting a powroll 415exkit but i got ??????? (4 replies)
  36. Just order my FCR! (2 replies)
  37. Synthetic Oils for the 400ex???? (13 replies)
  38. Great Article on Jetting (1 replies)
  39. FCR Carb (16 replies)
  40. 350x quad? (3 replies)
  41. WB Eseries (2 replies)
  42. Changing the Slow (Pilot) Jet (1 replies)
  43. Check out this big MOFO (7 replies)
  44. 14t on 300ex (1 replies)
  45. Keihin Carbs (2 replies)
  46. Airbox lid or not?? (13 replies)
  47. larger oil cooler?? (2 replies)
  48. I need top end!!! (14 replies)
  49. oil cooler ?? (6 replies)
  50. larger oil tank?? (2 replies)
  51. !!Need help please respond !! (2 replies)
  52. TC Racing port recommendation,,helpful info (14 replies)
  53. Port work,,,,how much $$$$ (28 replies)
  54. motor cuts out in the air (6 replies)
  55. 250ex jetting ? (0 replies)
  56. Powroll Vented Airbox Lid?? (3 replies)
  57. Awesome Mod (Recomended) (10 replies)
  58. Qwiksilver carb for 300ex? (2 replies)
  59. How do you set Camshaft timing on 400? (3 replies)
  60. blue tint on header pipe,,but it wipes off (8 replies)
  61. plug color (1 replies)
  62. help 440ex burning oil (3 replies)
  63. ?? for WB complete system owners (5 replies)
  64. snorkel on or off? (6 replies)
  65. how to change a pilot jet??? (3 replies)
  66. HRC cam? (1 replies)
  67. Supertrapp IDS2 (1 replies)
  68. YZ400 powered R's... Why are the YZ400's so hard to start? (14 replies)
  69. Anybody know? 81' Elsinor (7 replies)
  70. K&n power kit (1 replies)
  71. Whats going on here lean orfine ?????????? (6 replies)
  72. blown up 250R motor (5 replies)
  73. 416, 426 (1 replies)
  74. pipe (9 replies)
  75. I need engine help guys!!!!Badly! (3 replies)
  76. JE or Wiseco piston ? (8 replies)
  77. Just ordered my 440 kit!!!!!! (8 replies)
  78. Carb help! (1 replies)
  79. Question on aftermarket pipes! Please reply (15 replies)
  80. Carb help Please! (2 replies)
  81. Exaust question??? (4 replies)
  82. I'm new... My 400EX won't start! (16 replies)
  83. Another Jetting Question... (9 replies)
  84. Motor (4 replies)
  85. pc t4 with quiet core (2 replies)
  86. jetting (5 replies)
  87. Help..case repair?? (13 replies)
  88. what is the amount of oil recomended in a 400ex? (5 replies)
  89. Pilot / Slow Jet (3 replies)
  90. jetting help!!!! (2 replies)
  91. FCR or Edelbrock (13 replies)
  92. 440 sleeve question ????? (2 replies)
  93. what gaps??? (3 replies)
  94. high compression stock bore? (9 replies)
  95. 406 piston ---how much horsepower? (1 replies)
  96. FmF Q-4 pipe Question (5 replies)
  97. 416 or 440 ? What is the difference? (15 replies)
  98. white brothers pipe cracked!! (9 replies)
  99. Ok I need advice here.... (4 replies)
  100. !Please help! (8 replies)
  101. 300EX hopup on SportQuad.com (0 replies)
  102. intake (5 replies)
  103. High altitude jet suggestions (2 replies)
  104. Oil Level (6 replies)
  105. Fouling Plugs (3 replies)
  106. Next Modification? (7 replies)
  107. Help--- 300ex Is Dying (6 replies)
  108. Help me!Mechanics What are your thoughts?????? (3 replies)
  109. Getting a 440, what kind?? (10 replies)
  110. Race I had questions as in jet kits, pipes Etc... (7 replies)
  111. 400EX Best pipe? (7 replies)
  112. sparkplug boot (1 replies)
  113. installing a high compression piston (1 replies)
  114. Headpipe Bolts (2 replies)
  115. where can i get... (3 replies)
  116. Sparks Advance key (1 replies)
  117. installing a cam (3 replies)
  118. 400ex Smoking (5 replies)
  119. ahhhhhhh (13 replies)
  120. What to get? (5 replies)
  121. high compression (2 replies)
  122. Pilot jet question????? (1 replies)
  123. slow uphill it dies (5 replies)
  124. Wrong forum sorry (1 replies)
  125. Help It wont start!!!! (0 replies)
  126. ooo , i dont think thats good (3 replies)
  127. Yosh Exhaust (1 replies)
  128. Which Is Better For Drag Racing? (5 replies)
  129. which cam with 440 kit (5 replies)
  130. e-series help for 400ex (4 replies)
  131. WANTED! 250R ported cylinder! (5 replies)
  132. Jet Size????? (11 replies)
  133. what to do.... (9 replies)
  134. valve adjustment (4 replies)
  135. Dmc full exhaust jet ques. (9 replies)
  136. pilotjet/choke removal (1 replies)
  137. i have a FMF megamaxi 2, what would be the best way to run it? (2 replies)
  138. jet suggestions please! (6 replies)
  139. Do You Think This Will Help???? (2 replies)
  140. E Series Slip On For T-4 Or R4 (1 replies)
  141. Polishing Pipe (2 replies)
  142. K&N power kit... (11 replies)
  143. I think I might have got water in my engine (6 replies)
  144. answers roost boost (6 replies)
  145. Upgradeable Exhaust (5 replies)
  146. What next for 300ex (11 replies)
  147. Is porting worth it? (9 replies)
  148. Gabe"s stock pipe mod (12 replies)
  149. Precharger and rejetting (1 replies)
  150. Carb Jetting Question (0 replies)
  151. High compression piston.....Need advice (7 replies)
  152. Zmax (3 replies)
  153. White bros. R4 or E Sreies (13 replies)
  154. Different Carbs??? (2 replies)
  155. Gt Thunder Cam And 12.5 Update!! (3 replies)
  156. Hey Someone Help ---oil On Motor (6 replies)
  157. cams (1 replies)
  158. full exhaust (6 replies)
  159. Choke Removal (3 replies)
  160. Help My Clutch wont work!!! (6 replies)
  161. Cleaning carb. (9 replies)
  162. jet size???? 416 kit (7 replies)
  163. I Think I Am Rich!! (3 replies)
  164. New oil discovered! cooler running temperature (13 replies)
  165. any suggestions on jet size (0 replies)
  166. Supertrapp IDSII (5 replies)
  167. K&N precharger (2 replies)
  168. 3" SuperTrapp with Powroll Oversized Header ??? (1 replies)
  169. DMC Alien Exahust (5 replies)
  170. exhaust and carb need help (5 replies)
  171. not getting fuel? (7 replies)
  172. Paper or Plastic? well Foam really.. (3 replies)
  173. air screw with FMF Megamax/6 discs (0 replies)
  174. tc racing pipes? (8 replies)
  175. check your throttle adjustment! (0 replies)
  176. Everyones Attention Please!!!!! (22 replies)
  177. Hey all WB slip on pipe owners once again another pipe question (5 replies)
  178. HP Rating of a 440 (11 replies)
  179. How much more horse will the wb header give (5 replies)
  180. Which brand clutch plates are best? (12 replies)
  181. Hydraulic Clutch (12 replies)
  182. Water problems (8 replies)
  183. Tires (0 replies)
  184. anyone too lean? (7 replies)
  185. Yoshimira Pipe Questions... (5 replies)
  186. 300EX power (amps) output??? (1 replies)
  187. procircuit pipe (14 replies)
  188. KOLD AIR in airbox (10 replies)
  189. Curtis Sparks Pipe (9 replies)
  190. Rings Are Stuck!!!! (15 replies)
  191. Does this Sound Right (3 replies)
  192. chains (1 replies)
  193. Best Headpipe? (1 replies)
  194. white bros. all around cam? (4 replies)
  195. Another 400 not starting, any ideas? (11 replies)
  196. Pipe Is Melting (1 replies)
  197. blue header pipes (7 replies)
  198. Ignition Coil??????? (0 replies)
  199. pipes (1 replies)
  200. clutch on 250x need help (0 replies)
  201. Gearing (7 replies)
  202. strange acceleration with my 400ex (14 replies)
  203. Advanced timingn key? (0 replies)
  204. 400ex carb (0 replies)
  205. 416 or 440?!?! (8 replies)
  206. Will this hurt the filter? (10 replies)
  207. Dual Oil Coolers? (5 replies)
  208. Help 400ex Won't Start!!!! (6 replies)
  209. HELP??? Polishing cases (26 replies)
  210. How's this sound?? (2 replies)
  211. White Bros Power Kit? (1 replies)
  212. Buried my quad! (5 replies)
  213. want more low end (3 replies)
  214. use your foot for reverse (10 replies)
  215. Bills Or Wb E-series (9 replies)
  216. Gain from cam and piston (8 replies)
  217. Running Rich (1 replies)
  218. frankly... pipe (7 replies)
  219. e series or r4 (4 replies)
  220. sometimes my neutral light dont work?? (3 replies)
  221. what size sprocket would be best? (6 replies)
  222. xr250 black box (6 replies)
  223. what about the new hondas (15 replies)
  224. Cam Setup???????? (1 replies)
  225. Trick fuel in a stock 400ex? (8 replies)
  226. 300ex how many miles approx to get a rebuit engines (1 replies)
  227. a new pipe (1 replies)
  228. aftermarket rev limiter (0 replies)
  229. new carb (0 replies)
  230. aftermarket rev limiter (6 replies)
  231. 416 cost? (6 replies)
  232. 250ex Pipe? (2 replies)
  233. Questions about getting a headpipe for my slip on? (1 replies)
  234. head job ? (9 replies)
  235. What exhaust? (9 replies)
  236. 416 reveiw (3 replies)
  237. Oil Question, ASAP (3 replies)
  238. is a 14 front sprocket worth it for a 300ex?? (3 replies)
  239. Adjusting Valves (8 replies)
  240. HP of 400ex? (7 replies)
  241. anyone tried the wiseco 10:1 (13 replies)
  242. Cam And Piston (2 replies)
  243. cams (22 replies)
  244. Installing A New Carb Jet (2 replies)
  245. Oil Cooler (2 replies)
  246. Piston Help (8 replies)
  247. what is the right quad to get? (9 replies)
  248. Pro Circuit T4 / Quiet Core insert? (11 replies)
  249. what pipe should i get (3 replies)
  250. what are the best upgrades for lots of power (9 replies)