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  1. Hotcams Stage 1 (5 replies)
  2. insane ticking/ tapping/clanging (6 replies)
  3. stupid question. quiet exaust (2 replies)
  4. What bore is 89MM (4 replies)
  5. ???????????? (3 replies)
  6. Which oversized oil tanks work with the PEP steering stab? (0 replies)
  7. what shall the next mod be??? (18 replies)
  8. sparks 8-plate clutch (2 replies)
  9. 01 400ex starting problem (2 replies)
  10. what do you guys think of a RCM pipe for a warrior? (4 replies)
  11. Boring specs? (2 replies)
  12. this is pissing me off (18 replies)
  13. blue pipes (9 replies)
  14. wondering about HMF (2 replies)
  15. 300ex idling fast (4 replies)
  16. 250r cool head/jetting problem (0 replies)
  17. throttle cuts out?? (3 replies)
  18. 400EX exhaust fit 300EX? (2 replies)
  19. How many thousandths over is a 416? (1 replies)
  20. new cylinder questions (1 replies)
  21. Stock bore piston (2 replies)
  22. Case saver. (6 replies)
  23. 300ex exhaust on 250x? (2 replies)
  24. Sorry but an HMF exhaust question! (11 replies)
  25. Shorty for a Predator? (3 replies)
  26. 450r Big Bore (3 replies)
  27. 250r more power (3 replies)
  28. leaded gas? (3 replies)
  29. Another Jetting Problem (3 replies)
  30. full system or not? (4 replies)
  31. letsClear this up! (10 replies)
  32. Header meeting Slip on is lose (10 replies)
  33. Tire size and sproket size (3 replies)
  34. what year raptor's need tranny ugrade. (22 replies)
  35. 416 reliability?? (13 replies)
  36. Please Hellp Me Fast!!! (3 replies)
  37. ltz400 engine noise (2 replies)
  38. New Big Gun Rectifier (2 replies)
  39. Too Low of Gearing? (4 replies)
  40. the Zen of exhaust swapping.... (18 replies)
  41. Auto decompression thingy (13 replies)
  42. Need Help Installing A Kill Switch On My 450r (2 replies)
  43. Starting problems (0 replies)
  44. HMF Pipe?????? (1 replies)
  45. If i am gonna put a 400ex carb on my 250x........ (2 replies)
  46. Throttle Cuts Out!? (15 replies)
  47. pinging (8 replies)
  48. does LRD still make engine kits for teh 300ex? (4 replies)
  49. pro-fab (0 replies)
  50. weird clicking noise 300ex (7 replies)
  51. Groupbuy interest in Ross pistons (118 replies)
  52. Can u beat it ? (0 replies)
  53. ex talk (1 replies)
  54. Predator Stock Exhaust (4 replies)
  55. ? about WB e-series pipe (4 replies)
  56. Quiet core (2 replies)
  57. Which cam with setup? (14 replies)
  58. Will a crf450 motor fit in a 400ex frame?? (8 replies)
  59. FMF Megamax broke (3 replies)
  60. Quick ? Please help! (1 replies)
  61. Anyone have any problems w/ Sparks pipes?? (18 replies)
  62. Hotcams stage 1 or 2 (8 replies)
  63. looney tuned exhaust (0 replies)
  64. Looking for mx setup (0 replies)
  65. question about exhaust (0 replies)
  66. 416 popping no start?!?!?! (16 replies)
  67. carb jetting help (0 replies)
  68. pipe (24 replies)
  69. cobra exhaust (32 replies)
  70. I need MORE BANG (0 replies)
  71. JE, Weisco, or Ross Piston??? And A pic of my bike.. (13 replies)
  72. what jet for a 406ex (0 replies)
  73. starting problems (0 replies)
  74. I need help (1 replies)
  75. "O" I'm sooooo excited (18 replies)
  76. I need to hear your engine run 400ex owners (17 replies)
  77. 2000 Blaster Headlight Removal??? (3 replies)
  78. WB Quiet Core (3 replies)
  79. Air filter and carb brackets. (0 replies)
  80. best size big bore kit (300ex) (1 replies)
  81. would this be hard? (14 replies)
  82. i need some more help (2 replies)
  83. Stock chain links (2 replies)
  84. got smoked by a stock 400ex!!! (6 replies)
  85. Qusetion About White Brothers (2 replies)
  86. Water in motor?? (2 replies)
  87. cheapest pipe?? (3 replies)
  88. 300ex chain loose (14 replies)
  89. Yo Rico (1 replies)
  90. What Up With GT Thunder?? (7 replies)
  91. TC pipe ??? (4 replies)
  92. carb vs cam and piston?? (20 replies)
  93. running problems 300ex (6 replies)
  94. Anyone tried iCATusa (1 replies)
  95. silver tiny particles coming out when i changed the oil (18 replies)
  96. Whats your opinion...... (20 replies)
  97. GT Thunder 400EX CDI (11 replies)
  98. Question about running no end cap?? (21 replies)
  99. Anyone with an aluminum airbox - read this! (20 replies)
  100. Cam Cover Thickness? (0 replies)
  101. need help...i need to split my bottom end!!!! (7 replies)
  102. knock at idle (16 replies)
  103. Jetted Right?? (17 replies)
  104. time'n question??? (2 replies)
  105. wiring? (4 replies)
  106. Engine rebuild? (4 replies)
  107. Anyone with a 16t front sprocket? (12 replies)
  108. How do u like ur HMF's? (19 replies)
  109. clutch, whats up with it??? (7 replies)
  110. cheapest big bore kit(300ex) (1 replies)
  111. oil gauge (0 replies)
  112. engine builders reccomendations please (6 replies)
  113. 400ex rebuild costs and suggestions (12 replies)
  114. Which Headpipe (3 replies)
  115. Need help! Oil pump! (4 replies)
  116. Fst 330 Rings (2 replies)
  117. Yoshimura comp full system or big gun full system? (6 replies)
  118. 400 EX Meltdown (22 replies)
  119. Clutch Pull ??????? (20 replies)
  120. dunes and mx racing (1 replies)
  121. Black smoke coming out of new pipe...jetting ? (3 replies)
  122. Easier Starting (2 replies)
  123. home made valve ajusting tool (11 replies)
  124. i hate my 400 (14 replies)
  125. **400ex Smokin** (3 replies)
  126. 400ex, 250r , and crf 450 all in 1 ? (9 replies)
  127. Do I need to buy the same? (1 replies)
  128. Need fast help! rear brakes! (21 replies)
  129. chain,sproket,and gearing help/sugestions (8 replies)
  130. Hmf? (9 replies)
  131. 400ex stage 2 hotcam and a stock piston (3 replies)
  132. oil pump (3 replies)
  133. I Need Help!!!! (2 replies)
  134. best clutch (2 replies)
  135. Dyno Results (15 replies)
  136. help me my 400ex wont run (2 replies)
  137. rev limiter (6 replies)
  138. lets have another fcr jetting thread!!! (6 replies)
  139. should i just wait till it is completly dry (13 replies)
  140. any do the fcr accel. pump mod? (16 replies)
  141. Wont start or turn over (3 replies)
  142. need help today!!!!!! (10 replies)
  143. What 400ex Kit 440-426-416 (11 replies)
  144. Trx 450r (1 replies)
  145. dg pipe (4 replies)
  146. 400ex 14 Tooth Sprocket (10 replies)
  147. Please Read who know alot about the performance of a 400EX (16 replies)
  148. Jetting 300ex (3 replies)
  149. Does anybody take the time to check piston to valve clearance? (1 replies)
  150. 87 250x / durablue problems (5 replies)
  151. who running a edelbrock carb on there 300 (4 replies)
  152. HMF Exhaust Question????? (7 replies)
  153. does pro circuit make? (7 replies)
  154. 400ex race (8 replies)
  155. What are the sproket sizes on 400ex (11 replies)
  156. Removed choke? (4 replies)
  157. WB E-Series quality issues? (9 replies)
  158. Is it necessary to check the torque’s after a top end engine rebuild? (1 replies)
  159. Can someone give me specs..... (3 replies)
  160. k&n, UNI- Jetting (3 replies)
  161. Engine knock?? (2 replies)
  162. Have 416 Kit! Now which Edelbrock?? (5 replies)
  163. got my curtis sparks (7 replies)
  164. 416ex Review (37 replies)
  165. jetting procircuit 400ex (2 replies)
  166. what are good cams? (12 replies)
  167. bad to not use clutch on 300ex? (6 replies)
  168. 350x cdi box (2 replies)
  169. Wheelie factor, seat of pants factor (18 replies)
  170. 300ex Will Not Start!!!!!!!! (14 replies)
  171. 39 FCR question, please help (3 replies)
  172. Hmf VS. E-Series (8 replies)
  173. Dyno Jets for HMF full system(400ex)Virginia...? (3 replies)
  174. cyl. sleeve (2 replies)
  175. vortex CDI?...good or bad? (8 replies)
  176. Broke a cylinder head cover bolt. (5 replies)
  177. carb (0 replies)
  178. how hard is it to put a cam in? (11 replies)
  179. 350x with 250x carb jetting (7 replies)
  180. engine ???? need advice (1 replies)
  181. just got threw installing my hotcamstage 2 (8 replies)
  182. Taking top end off engine (6 replies)
  183. Sprocket Sizing Help (6 replies)
  184. Engine Work!!!!!!! (18 replies)
  185. Full service on 400EX (19 replies)
  186. crf 450 in a 250r frame? (1 replies)
  187. lectron,stock,keihn,sell all get new (4 replies)
  188. Wanted TRX exhaust Look (1 replies)
  189. oversized oil cooler (8 replies)
  190. Heat Shield Wrap for the Header (21 replies)
  191. uni all the way (2 replies)
  192. 440? (6 replies)
  193. water hole 400 won't start (8 replies)
  194. In the Mile High City Should I do the 440 kit (1 replies)
  195. V-Force Kill Switch Help (1 replies)
  196. stock carb size? (1 replies)
  197. More Torque? (7 replies)
  198. Stock Muffler Finish (2 replies)
  199. Keihn jets vs. Dyno jets... ? (8 replies)
  200. Constantly Blowing fuses (7 replies)
  201. hole in pipe (0 replies)
  202. spark arrestor (6 replies)
  203. FCR or edelbrock? (23 replies)
  204. K&N vs. Uni (49 replies)
  205. Anyone ever heard of a motor doing this? (10 replies)
  206. How can I modify the CDI on my 300EX? (2 replies)
  207. need info about rejetting a blaster with a fmf (7 replies)
  208. More Power Please (3 replies)
  209. Anyone removed there auto decompresion lobe from the cam??? (3 replies)
  210. Has anyone bought oil filters off ebay??? What do you use? (8 replies)
  211. Elderbrock Carb (6 replies)
  212. could somone get me close with a jet for start up (2 replies)
  213. cam specs for hotcams and HRC cam (3 replies)
  214. jetting with out taking off the gas tank (3 replies)
  215. average miles per year (5 replies)
  216. My quad is dead, I'm taking suggestions! (17 replies)
  217. smoking EX (7 replies)
  218. LRD full system buring my clutch cable!!! (9 replies)
  219. outerwears cover for cfm airbox? (2 replies)
  220. Electric shortage (0 replies)
  221. Pics of my new HMF Ballance full system and MSD ignition (56K Beware) (61 replies)
  222. Big Bore (1 replies)
  223. Outerwear To Replace Airbox Lid ??? (19 replies)
  224. aftermarket cams (16 replies)
  225. full system or what? (3 replies)
  226. battery issue (2 replies)
  227. Broken Piston (10 replies)
  228. 1986 200x diagram (2 replies)
  229. Key or no key that is the question (3 replies)
  230. 16T Front Sprocket? (7 replies)
  231. Help with next mod?? (4 replies)
  232. Carb Screws (400Ex) (1 replies)
  233. strange noise (2 replies)
  234. 300ex left case question (1 replies)
  235. yes!! an other jetting problem please help! (6 replies)
  236. 300ex Serious Problem (14 replies)
  237. XR 400 Cam (19 replies)
  238. 400ex cutting out at water crossing? (8 replies)
  239. another jetting question (7 replies)
  240. performance tricks! (5 replies)
  241. New Cam/Ignition Key ?'s (7 replies)
  242. 300EX Sator....How Much? (0 replies)
  243. Deep water (2 replies)
  244. 400ex won't start (13 replies)
  245. how to check db level? (3 replies)
  246. 400ex wiseco piston for sale (1 replies)
  247. rtc clutch (15 replies)
  248. Cleaning Pipe (1 replies)
  249. 400ex (4 replies)
  250. 400ex not revvin up help (8 replies)