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  1. Jetted today but confused?? (4 replies)
  2. 416 runs lean... Why? (20 replies)
  3. New Clutch Slipping HELP!!!! (13 replies)
  4. Possible head problems (2 replies)
  5. snapped the front sprocket bolt (12 replies)
  6. 460ex?? (13 replies)
  7. 200 main??? (4 replies)
  8. Why? (2 replies)
  9. anyone compare fcr 41 vs 39? (6 replies)
  10. Low Budget Engine Upgade (11 replies)
  11. Hyd clutch/ x-6pipe (2 replies)
  12. xrs only (4 replies)
  13. no spark (6 replies)
  14. 440 (0 replies)
  15. any aftermarket airbox's for the 300 (1 replies)
  16. Sparks X-6?? (6 replies)
  17. Shee motor in EX or R frame (10 replies)
  18. Aluminum Airbox??? (5 replies)
  19. Um Racing (4 replies)
  20. cams (1 replies)
  21. help, preferance? (1 replies)
  22. hmf pipe (10 replies)
  23. 300ex carb trouble (0 replies)
  24. 250x stuff (1 replies)
  25. 416,426,440 hp #'s (7 replies)
  26. k & n filter ???? (8 replies)
  27. 350RX........should i do it? (23 replies)
  28. new 450R (10 replies)
  29. Blown Head Gasket (1 replies)
  30. what pipe for a 440 with a ported head (3 replies)
  31. Some Cam suggestions (9 replies)
  32. 440 stoker kit good choice? (17 replies)
  33. Does anyone know what stock jetting is on trx300 Rancher? (7 replies)
  34. Who has the best price on a stroer crank w/ HD rod?? (4 replies)
  35. Exhaust system for YZF426/EX? (3 replies)
  36. DB rating? (6 replies)
  37. HRC Cam Evaluation (27 replies)
  38. best carburetor (15 replies)
  39. the broke 300...again (3 replies)
  40. hp gains from port/polish (2 replies)
  41. 11:1 piston for 250x? (1 replies)
  42. good cam for 300? (5 replies)
  43. popping in front of wolverine in reverse need help (0 replies)
  44. AVGAS is good... (37 replies)
  45. 440 or ???? (7 replies)
  46. which pipe is this? (8 replies)
  47. whats the best carb to get (1 replies)
  48. Installing a tether cord (4 replies)
  49. How fas will a 300EX go with a 300 bore kit? (12 replies)
  50. A good mod (14 replies)
  51. R-4 jetting = Lots of power (2 replies)
  52. wut bore is the best 4 a 400ex? (1 replies)
  53. size 41 1/2 pilot jet???? (0 replies)
  54. 300ex problem (12 replies)
  55. More Power For Fourstroke (7 replies)
  56. 400EX Carb on 250X? (2 replies)
  57. '87 250X Reverse Problem (7 replies)
  58. what jet kit and what jet (2 replies)
  59. Rev limiter (2 replies)
  60. Problems with the Timing Chain (13 replies)
  61. motor mod ??? (4 replies)
  62. 450r radiator on R???? (0 replies)
  63. 440 cc's and a JE piston...Where do I go from here? (0 replies)
  64. gearing my 400ex (3 replies)
  65. all 300ex riders (4 replies)
  66. OIl cooling for 300ex?? (14 replies)
  67. My Mobile Dyno (1 replies)
  68. ut ohhh (1 replies)
  69. Z400/KFX engine swap (1 replies)
  70. 250r low end port??? (8 replies)
  71. 400 making ticking noises (10 replies)
  72. dynojet size conversion (9 replies)
  73. Which exhaust should I buy? (4 replies)
  74. headpipe glowing red (8 replies)
  75. engine gurus please read (10 replies)
  76. Wires!!!! (2 replies)
  77. What can I do to a 250EX to make it at least do 60MPH? (32 replies)
  78. All 330ex riders please read (13 replies)
  79. black box mods... (2 replies)
  80. 460 reliablity (22 replies)
  81. Get an Oil Cooler? HELP!!! (2 replies)
  82. Spark Areester/IDLE (1 replies)
  83. need technical help!!!!!!!! (4 replies)
  84. 250r stock jets (1 replies)
  85. 450R carb (4 replies)
  86. Runin cooler = power (13 replies)
  87. 440 11:1 or 12.5:1 (3 replies)
  88. Question Exaust and what jet I need, and aabout a Cam?? (3 replies)
  89. hp gains (11 replies)
  90. what is laegers website (1 replies)
  91. Air Cut Off Valve??? (1 replies)
  92. Has this ever happened to other 300ex owners? (17 replies)
  93. 400ex cam (9 replies)
  94. Kick Start on a 400ex? (26 replies)
  95. 440 sleeve scored, options? (21 replies)
  96. Best Header and Silencer for Drag 400 ex (3 replies)
  97. Cheap Performance Mods (6 replies)
  98. Exhaust. Which is my best bet? (2 replies)
  99. 250x motor questions (2 replies)
  100. pc stock exhaust? Pappy? (9 replies)
  101. Any one got any specs of slip-on pipe decible ratings? (3 replies)
  102. 400EX won't shift (4 replies)
  103. 426,stage2 cam.any heat related problems?? (2 replies)
  104. Connecting Rod Troubles... (1 replies)
  105. supertrapp ids-2 exhaust (3 replies)
  106. What kind of power would this quad have . . (15 replies)
  107. thumper racing 440ex (2 replies)
  108. New 400ex too Much Oil? (9 replies)
  109. smoking (4 replies)
  110. FCR 416ex jetting (3 replies)
  111. CDI rev limit (11 replies)
  112. rev box (3 replies)
  113. Valve clearance (1 replies)
  114. i need opinions PLEASE (6 replies)
  115. wiseco piston (11 replies)
  116. New Cam/What Oil???? (7 replies)
  117. RPM's (tachometer) (4 replies)
  118. 250R motor in a 250X frame- Pics! (16 replies)
  119. dyno tuning (5 replies)
  120. hp on worked 250r? (3 replies)
  121. How to replace my 300ex throttle cable? (1 replies)
  122. Dg exhaust/jet (6 replies)
  123. everyone with motor mods look here!! (8 replies)
  124. bad vibration and noise from my 440 (4 replies)
  125. Best clutch set up for the 400? (6 replies)
  126. anybody run the 400ex carb on their 300ex? (19 replies)
  127. CDI upgrades (2 replies)
  128. fat boy 4 (5 replies)
  129. big gun race for 250ex (1 replies)
  130. 416/16 Tooth (16 replies)
  131. Banshee motor in lt250r frame? (1 replies)
  132. jet hot coatings??????? (4 replies)
  133. exhaust question (5 replies)
  134. 2-stroke oil (7 replies)
  135. Pro Fab Atv (1 replies)
  136. tight clutch (8 replies)
  137. engine mods for a 300ex with out the big bore (7 replies)
  138. slipping clutch (1 replies)
  139. bill ballance series hmf pipe (3 replies)
  140. Oil Tank pressure (7 replies)
  141. Slip on and Header pipe (2 replies)
  142. how high of octane will i need? (17 replies)
  143. kill switch (4 replies)
  144. help with new motor asap (5 replies)
  145. smoking .....????? (7 replies)
  146. Buddies 400 broke.... (9 replies)
  147. installing a sparks 8 plate clutch (6 replies)
  148. duncan fatboy exhaust? (9 replies)
  149. Anti-Sieze? (5 replies)
  150. 300ex pro design kill switch help (5 replies)
  151. c-dale motor on a 400ex (17 replies)
  152. HMF slipon jetting for 400ex? (16 replies)
  153. Got the CRF today. (39 replies)
  154. Hi-comp Piston (5 replies)
  155. fcr carb jets (1 replies)
  156. 300ex high comp piston question (3 replies)
  157. Best Steel Sprockets for the Price (18 replies)
  158. 250r rad. cap pressure rating (1 replies)
  159. Big Gun quiet core (2 replies)
  160. Smokin! (5 replies)
  161. aftermarket clutch kit install? (3 replies)
  162. Slip on To Full System? (5 replies)
  163. valve clearance (3 replies)
  164. Pictures of HMF pipes (23 replies)
  165. 250x kickstart on 300ex? (5 replies)
  166. perfprmance (8 replies)
  167. 400ex clutch pin (0 replies)
  168. 250r radiator cap poundage? (0 replies)
  169. Pilot ???? (10 replies)
  170. Black plug (1 replies)
  171. trx 250x wiring/lights (2 replies)
  172. Wiseco 440 Big Bore Help (0 replies)
  173. Need to go Faster...What kit to buy? (2 replies)
  174. choke or not (4 replies)
  175. oil cooler (2 replies)
  176. Won't start (4 replies)
  177. what pipe to get? (5 replies)
  178. cool head?....stock head? (1 replies)
  179. For those of you with built 250x/300ex engines (6 replies)
  180. hinson quick change clutch cover? (8 replies)
  181. my clutch cable broke is it bad to ride with out??? (29 replies)
  182. Race Gas (9 replies)
  183. 400ex clutch? (1 replies)
  184. For those BUILDING motors (5 replies)
  185. fmf headers (2 replies)
  186. Need jetting help (6 replies)
  187. R problem.........please help (5 replies)
  188. XR400 Mod's (0 replies)
  189. NGK Spark plug info (0 replies)
  190. Exhausts exhausts.. too many. (15 replies)
  191. ticking (7 replies)
  192. good place to buy pistons (1 replies)
  193. xr 50 oil? (0 replies)
  194. What are good lt250r mods (2 replies)
  195. Adding links to the stock chain? (4 replies)
  196. stripped stud (2 replies)
  197. adding a spark arrestor to a X-6 (1 replies)
  198. 440 vs. 250r? (38 replies)
  199. filter (12 replies)
  200. good chain to buy (19 replies)
  201. cdi failure in cold weather (0 replies)
  202. 22cc cool head on stock 250r cylinder?? (1 replies)
  203. EX Header Question?? (4 replies)
  204. Best Oil (8 replies)
  205. what size jet? (2 replies)
  206. jets... (3 replies)
  207. DJ main jet adapter (6 replies)
  208. 13.5:1 compression anyone else (21 replies)
  209. 400EX cooling fan? (3 replies)
  210. 250r head studs (1 replies)
  211. seems flat (14 replies)
  212. how much $ ...for porting n polishing 250r ? (1 replies)
  213. 250r exhaust flange (6 replies)
  214. rear axle bearings? (8 replies)
  215. 00 400ex slip on jetting Pro Circut (1 replies)
  216. edelbrock doug eichner series carb (2 replies)
  217. anybody have exhaust for a 250ex they wanna sell?? (2 replies)
  218. after market chain ???? (4 replies)
  219. Gearing for dune riding (2 replies)
  220. whats wrong? (13 replies)
  221. porting a 250r??... does it help (7 replies)
  222. hot cams (10 replies)
  223. jetting question (5 replies)
  224. help (3 replies)
  225. Jetting question (9 replies)
  226. Port n Polish? (6 replies)
  227. gearing? (4 replies)
  228. 250ex pipe (0 replies)
  229. TC Shorty exhaust?? (4 replies)
  230. Power gains from cam and piston?? (5 replies)
  231. need help with clutch 400ex (9 replies)
  232. clutch troubles (3 replies)
  233. 440 big bore kit? (3 replies)
  234. #40 pilot in 400ex question (3 replies)
  235. wrist pin seized (4 replies)
  236. Spark plug (3 replies)
  237. Oil (7 replies)
  238. EMGO Oil Filters for 400EX (2 replies)
  239. Air vent holes/jetting? (3 replies)
  240. what cdi's work in winter? (2 replies)
  241. 416 engine gaskets? (2 replies)
  242. t-4 for 250ex (0 replies)
  243. Sparks Key or 14T Sprocket? (3 replies)
  244. which pipe (3 replies)
  245. conversion (2 replies)
  246. Rancher Idle/Acceleration Problems (5 replies)
  247. where to find odds and ends for 250x engine? (5 replies)
  248. I am jetting this weekend (2 replies)
  249. Bleed the brakes? (3 replies)
  250. air comming out the sprocket??? (4 replies)