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  1. valves stuck, what now (3 replies)
  2. how do i get the head off?? (6 replies)
  3. jetting for my trx450r (2 replies)
  4. Polishing the cylinder (5 replies)
  5. sparks x-6 full system (12 replies)
  6. what site??? (1 replies)
  7. exhaust??? question (3 replies)
  8. HMF Order problems (14 replies)
  9. Digging taters once again with repaired tanny (0 replies)
  10. First time changing axle bearings, got a couple questions... (2 replies)
  11. Pipe Question (12 replies)
  12. Full System or just a pipe? (14 replies)
  13. additives (0 replies)
  14. Jetting Problem! (6 replies)
  15. high speed bogging (19 replies)
  16. 400ex airboot plug? (4 replies)
  17. Cam? (10 replies)
  18. Is my 400ex busted?? (19 replies)
  19. can't set piston into cylinder!!!help!!! (5 replies)
  20. what to do next? (0 replies)
  21. Big gun exhaust (1 replies)
  22. URGENT! NEED HELP!400ex decomp. spring is stuck!!! (3 replies)
  23. Free Wal Mart Gift Card (3 replies)
  24. will this fit... (1 replies)
  25. Rubicon Exhaust (1 replies)
  26. FDO Head Stud Torque (0 replies)
  27. If i BUy a 75mm bored head for my 300ex... (4 replies)
  28. Cr250 in 400ex (4 replies)
  29. 300ex rev limiter (3 replies)
  30. exasut leak/ problem (3 replies)
  31. removing spark arrester (9 replies)
  32. Best boost for 300EX (23 replies)
  33. high compression/jetting question trx450r (15 replies)
  34. will 465 piston kit work with 4mmm stroke? (5 replies)
  35. 2 stock oil coolers or one bigger one ????? (1 replies)
  36. No start issue (6 replies)
  37. blueprint porting (2 replies)
  38. overflow lines (2 replies)
  39. what compresion (3 replies)
  40. Bogging On Wheelies? (6 replies)
  41. my setup (1 replies)
  42. shorty pipe after affects (6 replies)
  43. 300ex choke sux!!! (8 replies)
  44. tc pipes are they the best (8 replies)
  45. ngk plugs (8 replies)
  46. what does a cam do? (18 replies)
  47. if my packing is bad can it burn out my valves? (4 replies)
  48. need parst for an '01 400EX (2 replies)
  49. oil for my airfilter need answers and opinions! (5 replies)
  50. Electrical shorted out? (2 replies)
  51. piston rings upside down? (8 replies)
  52. 440 head gasket (1 replies)
  53. 400ex engien rebuild help (1 replies)
  54. 400 ex engien rebuild help (1 replies)
  55. hot cams intake cam? (7 replies)
  56. Help me! stripped bolt (9 replies)
  57. Utility aftermarket product? (2 replies)
  58. 450r axle on 400ex (8 replies)
  59. Valve Seat (7 replies)
  60. twin air to K&N rejet? (1 replies)
  61. piston over (3 replies)
  62. Timing (7 replies)
  63. full biggun (3 replies)
  64. do reeds actually help (8 replies)
  65. 440 experts out there? (9 replies)
  66. i need to keep up with 450s (15 replies)
  67. Seized 300ex (5 replies)
  68. Flaimin HMF (14 replies)
  69. stage 1 ? (3 replies)
  70. FCR 40/41 jetting question (4 replies)
  71. 400ex rev. (3 replies)
  72. She spits and sputters when wet why? (8 replies)
  73. removing the aibox lid (8 replies)
  74. 300ex chain and sprockets (2 replies)
  75. 440EX question (5 replies)
  76. axel swap (3 replies)
  77. yo fellas, new here, got question (26 replies)
  78. so im going to put a husaberg 501 in my 400 frame... (4 replies)
  79. Head/cam Install Help (3 replies)
  80. big bore (9 replies)
  81. Mobil 1 Red Cap? (11 replies)
  82. spark arrestor (3 replies)
  83. High altitude jetting (0 replies)
  84. Dial-A-Jet....Worth it? (1 replies)
  85. intake? (5 replies)
  86. 2nd gear slipping (4 replies)
  87. dg pipe on 300ex (2 replies)
  88. twinair filter cleaning? (6 replies)
  89. COBRA exhaust, are they always lowd (2 replies)
  90. strocker 440cc (7 replies)
  91. Need help fast.. (4 replies)
  92. CR250 Plug Fouling HELP (9 replies)
  93. 300ex CAM Advise (15 replies)
  94. full HMF popping.. (8 replies)
  95. sidewinder chain & sprocket (1 replies)
  96. Pipe question (1 replies)
  97. PC 4 shorty. (2 replies)
  98. i need jetting help please (0 replies)
  99. 400ex motor help (2 replies)
  100. YFZ 39mm FCR on 400ex (0 replies)
  101. JE 416 10.8-1 piston where can i find one? (16 replies)
  102. K&N on 250ex (4 replies)
  103. gearing for my 400EX (6 replies)
  104. hinson clutch componets (5 replies)
  105. What mods next? (5 replies)
  106. will.........!!! (4 replies)
  107. carb upgrade... fcr (5 replies)
  108. Engine builder around St Louis, MO (15 replies)
  109. so i was (5 replies)
  110. axle nut play? (3 replies)
  111. lte and hmf combind (2 replies)
  112. mods for duels (1 replies)
  113. help needed (1 replies)
  114. Tudor's Big bore. (2 replies)
  115. Cobra exhaust? (15 replies)
  116. Plug gap (0 replies)
  117. Jetting for HMF pipe. (14 replies)
  118. Broken Bolt (5 replies)
  119. quad bogging out (7 replies)
  120. Will runing rich hurt anyhting? (12 replies)
  121. what octane? (4 replies)
  122. New crank or rebuilt old one? (1 replies)
  123. 87-92 piston in 85-65 LT250R? (5 replies)
  124. Valves (5 replies)
  125. Jetting question (5 replies)
  126. Recommendations for full 300ex exhaust (9 replies)
  127. Should I rejet (3 replies)
  128. K&N Recharge on UNI Foam Filter? (4 replies)
  129. HRC cam (30 replies)
  130. plug gapping for high compression piston (8 replies)
  131. What? (7 replies)
  132. Chain to Tight ***HELP*** (14 replies)
  133. shaved head (2 replies)
  134. Puttering Start (2 replies)
  135. parts??? (1 replies)
  136. Anotehr jet question (8 replies)
  137. how does elevation change your jetting? (9 replies)
  138. quick,easy ? (1 replies)
  139. needle (3 replies)
  140. clicking in valvetrain (1 replies)
  141. CR500 Hybrid (31 replies)
  142. stock exhaust db level (0 replies)
  143. clutch spring bolt torque??? (6 replies)
  144. cams... (2 replies)
  145. best 440 kit (1 replies)
  146. gas leaking horribly (4 replies)
  147. cracked head (1 replies)
  148. race gas (8 replies)
  149. Z400 Jetting with mods (8 replies)
  150. 12mm cylinder bolts (0 replies)
  151. where to buy ross (5 replies)
  152. Engine Help Numbers!!!! (3 replies)
  153. Axle: LSR or RPM (23 replies)
  154. cdi/ rev box help (8 replies)
  155. 400 ex question (4 replies)
  156. Hotcam / valve lash / jetting (11 replies)
  157. Is this normal (38 replies)
  158. cluch ?'s (3 replies)
  159. 99 300 ex brakes (4 replies)
  160. piston size (4 replies)
  161. VP ultimate 4 and jetting? (2 replies)
  162. Best way to blow tax return... (12 replies)
  163. Porting a 400ex talk to me here! (6 replies)
  164. Bel Ray or Klotz (4 replies)
  165. 1997 Suzuki Quad Runner 250 Carb Problems (3 replies)
  166. water in rear end (4 replies)
  167. help....PRO CIRCUIT PIPE HELP (1 replies)
  168. will this fit? (2 replies)
  169. Your 416 (8 replies)
  170. 450r carb (4 replies)
  171. FCR 41mm questions (2 replies)
  172. Can i straighten this? (24 replies)
  173. THE Cheapest full exhaust for a 400EX??? (15 replies)
  174. Dual exhaust?!? (12 replies)
  175. oil recommendations (4 replies)
  176. carbs for banchee (2 replies)
  177. spark plug gaping (0 replies)
  178. lets see the pics of the SHORTY pipes. (13 replies)
  179. torque wrench and locktite? (15 replies)
  180. new 05 400 ex cutting out and stalling (9 replies)
  181. best choiche for banshee (2 replies)
  182. HMF headpipe (3 replies)
  183. best cam for torque (9 replies)
  184. engine leaking oil? (1 replies)
  185. Repacking T4 (1 replies)
  186. diffrence in powa with Q-core (4 replies)
  187. Best (5 replies)
  188. how much (1 replies)
  189. Pipe (3 replies)
  190. DMC Alien Pipe? (4 replies)
  191. FCR40mm Problems with 416 (Legit) (4 replies)
  192. 175 main with HMF full system (5 replies)
  193. Electrical Question? (12 replies)
  194. shorty YOSHI trs (0 replies)
  195. Edelbrock Carb adjustments (2 replies)
  196. Hmf just installed (4 replies)
  197. 426 kit (11 replies)
  198. 300ex carb (3 replies)
  199. would this give me a good increase in power (9 replies)
  200. Ignition (1 replies)
  201. Stripper (1 replies)
  202. 400ex hybrid options (8 replies)
  203. DIY spark arrester. (3 replies)
  204. VP Fuel (7 replies)
  205. Is 180 to big? (10 replies)
  206. Valve Springs (2 replies)
  207. engine bearings (0 replies)
  208. Whose fault? (5 replies)
  209. 300ex/250x exhaust (4 replies)
  210. vortex help (0 replies)
  211. jetting 160 main? (1 replies)
  212. hotcam pay for original cam (7 replies)
  213. Quick Cam question (2 replies)
  214. 400ex crf conversion vs. exhaust? (2 replies)
  215. clutch (5 replies)
  216. using hot or cold plugs.. (3 replies)
  217. Kid ate crankcase pivot bolt bushing! (5 replies)
  218. best sprocket setup (4 replies)
  219. White Bros E2 slip on? (3 replies)
  220. jet size (3 replies)
  221. Valves Tapping 2 Hours After Adjusting (17 replies)
  222. Jetting (3 replies)
  223. uh oh extra parts (13 replies)
  224. Carbon Tech Reeds: Are They Good? (2 replies)
  225. should i run race fuel? (10 replies)
  226. Where to order HMF BB? (6 replies)
  227. Which carb for a esr 310? (2 replies)
  228. 300ex shifter... (3 replies)
  229. Warrior parking brake removal?? (1 replies)
  230. Strage oil leak...please help (35 replies)
  231. What should i buy?????? (3 replies)
  232. Comparing dynojet and keihin jet sizes... (6 replies)
  233. 250x jetting (9 replies)
  234. jetting help (3 replies)
  235. 300ex rear bearings / carrier (2 replies)
  236. Carb leaking like crazy when going up a hill. (3 replies)
  237. cracked head (3 replies)
  238. vortex twist throttle (1 replies)
  239. oil filter on 82 atc 185s? (3 replies)
  240. Sport vs Ballance (3 replies)
  241. Ticking Sound (4 replies)
  242. Engine Problem (maybe) (0 replies)
  243. PLEASE HELP with my LSR axle (12 replies)
  244. Exhaust noise (9 replies)
  245. fcr 39 mm carb on 416 (5 replies)
  246. 400EX Carb Problem... (4 replies)
  247. Jets (3 replies)
  248. ethylene glycol vs. propolene glycol (7 replies)
  249. Pics of installed CFM Airbox? (4 replies)
  250. I need help (5 replies)