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  1. Replacing Clutch (1 reply)
  2. Rekluse Clutch (3 replies)
  3. Yfz450 With Yz450f Twist Throttle (1 reply)
  4. 08 Wr/wiseco 12.5.1 Build (3 replies)
  5. Cylinder Honing (6 replies)
  6. Buying New Crank (4 replies)
  7. Stroker Kit Help? (7 replies)
  8. Carb Issues... (3 replies)
  9. Oil Mod Do I Need It Or Not? (8 replies)
  10. Where To Get Yfz Service Manual (6 replies)
  11. Just Picked Up A 2007 Yfz (3 replies)
  12. Hot Cam? (5 replies)
  13. Engine Build (3 replies)
  14. Cp Rings (1 reply)
  15. Jetting For My Setup. (5 replies)
  16. Wr450 Crank (2 replies)
  17. Budget Build (5 replies)
  18. Crankshaft Maine Bearings Help (3 replies)
  19. Wiesco Better Than Cp (7 replies)
  20. Splitting Cases For The First Time (3 replies)
  21. Nology Coil (5 replies)
  22. Je Pro Series Pistons (11 replies)
  23. Need Help Asap W/prox Rings ? (3 replies)
  24. Coil Cap Problem? (1 reply)
  25. Pressure Out Of Breather, Spewing Oil (15 replies)
  26. 480 Help (3 replies)
  27. Sparks Big Core Vs. Regular Core? (5 replies)
  28. Bike Spluttering At High Rpm On Dyno (46 replies)
  29. Exhaust Pipes (9 replies)
  30. Gytr Exhaust Packing (0 replies)
  31. Burning Oil (2 replies)
  32. Starter Gear Behind Flywheel (3 replies)
  33. 07 Oil Mod (2 replies)
  34. Quick Opinion Quesion (7 replies)
  35. Yfz450 Crank (4 replies)
  36. What You Think? (1 reply)
  37. Dynatek? (12 replies)
  38. 06 Yfz Float Height? (1 reply)
  39. Jammed Needle Valve (6 replies)
  40. Dasa Exhaust (5 replies)
  41. Where Do The Coolant Bottle Hoses Go (6 replies)
  42. Really Frustrated--wont Start After Rebuild (10 replies)
  43. Spark Issue (4 replies)
  44. Buying A Bike Clutch Kit (4 replies)
  45. Gytr Exhaust (1 reply)
  46. Help Bad Stator?! (2 replies)
  47. Jetting (0 replies)
  48. Hmf Competition Series (4 replies)
  49. Jammed Needle Valve (2 replies)
  50. Over Flow Bottle (4 replies)
  51. Any Sugestions (4 replies)
  52. Help With Choke (4 replies)
  53. Really Hot And Flames Coming Out Of Exhaust After Rebuild? (12 replies)
  54. Help! No Fire And Relay Is Clicking? (2 replies)
  55. Eldabrock Carb? Good Or Bad? (3 replies)
  56. Help With Choke (1 reply)
  57. Anyone Looking For A 98mm Big Bore Jsr N-motion (2 replies)
  58. Jardine Rt99 (15 replies)
  59. 08 Yfz450 With No Spark (0 replies)
  60. Slip-on With Aftermarket Head Pipe (1 reply)
  61. Looking For A 97mm Top End Gsket (2 replies)
  62. 480 Bigbore Head Gasket? Can U Use Stock? (7 replies)
  63. Repack Dasa Exhaust (19 replies)
  64. Switching From Lectron To Fcr (2 replies)
  65. Oil Seeping From Case! Buying Tom! (11 replies)
  66. Is This Right (2 replies)
  67. Oversized Radiator Whats Good And Is It Worth It? (7 replies)
  68. Not A Yfz (5 replies)
  69. Yfz450 Wont Kick Start (15 replies)
  70. New Build Underway (yfzr) (11 replies)
  71. What Head Gasket With 14:25:1 Cp.help>>>urgent (9 replies)
  72. Wont Start (4 replies)
  73. Nmotion Pipe ? (2 replies)
  74. Kickstart Issues (6 replies)
  75. Is This Jetting To Much! (3 replies)
  76. Why Are There Two Timing Marks On Magneto? (2 replies)
  77. Questions Big Bore (16 replies)
  78. Yfz450 Clutch Help! (7 replies)
  79. Need Help Kicker What Kind Works? (6 replies)
  80. Neutral Rev.... (10 replies)
  81. I Need Jetting Help? (5 replies)
  82. Need Hellp Asap "not Idleing " (12 replies)
  83. Sparks Big Core (2 replies)
  84. Workshop Manual Symbols? (6 replies)
  85. Yfz Clutch Help (1 reply)
  86. Locked Up (4 replies)
  87. Header Question (2 replies)
  88. Starter Problems (2 replies)
  89. Jardine Rt-5 Vs. Jardine Rt99 (1 reply)
  90. I Need Jetting Help!?!?!?!? (2 replies)
  91. Stripped Oil Line Bolt Need Help (7 replies)
  92. Need Help (1 reply)
  93. Programming Dyna Box? (5 replies)
  94. Tom Miller Motorsports (2 replies)
  95. Weird? (15 replies)
  96. Yamaha's 5 Valve 450 Engine (15 replies)
  97. Anyone Do The Oil Upgrade Without The 07 Pump? (31 replies)
  98. Noisy Engine (10 replies)
  99. Je Or Cp Piston (8 replies)
  100. Cam Mod Trouble (7 replies)
  101. Need Help With Cam ? (10 replies)
  102. What Kind Of Piston (11 replies)
  103. Quick Question.. (18 replies)
  104. New Member And Problem With The Starter Button (3 replies)
  105. Starting Problem (0 replies)
  106. Need Some Electrical Help! (3 replies)
  107. Carb Gasket (4 replies)
  108. Yfz450 Starter ? (2 replies)
  109. Head Claying Problems? (8 replies)
  110. Replacing Crank (13 replies)
  111. 2008 Yfz450 Kichstart (4 replies)
  112. Yfz Starting Problems (17 replies)
  113. ? About Oil Mod (5 replies)
  114. 05 Cylinder And Timing Chain Question (2 replies)
  115. Need A Quick Answer! (11 replies)
  116. Need Help Asap! (1 reply)
  117. Any Ideas? (4 replies)
  118. Electrical/starting Problem (3 replies)
  119. Should I Trade My Buddy Exhaust? (3 replies)
  120. Doing A Big Bore Rebuild! Am I Missin Anything? (3 replies)
  121. Help Asap. Lower Cylinder Water Passage O-ring? (4 replies)
  122. Intakes (2 replies)
  123. Need Help Asap !1 (12 replies)
  124. What Size Gasket? (4 replies)
  125. Rich Idle? (3 replies)
  126. Balance Shaft Timing? (2 replies)
  127. Airbox Lid Off Or On (4 replies)
  128. Black Module Box By The Battery? (5 replies)
  129. No Thats Not Right! Jetting. (8 replies)
  130. Kickstart Lever Snapped (6 replies)
  131. Quick Question Guys (3 replies)
  132. My Rebuild, Broken Balance Shaft? (2 replies)
  133. Can You Powder Coat Your Exhaust Can? (7 replies)
  134. Do I Need New Gaskets (2 replies)
  135. 05 Yfz450 (5 replies)
  136. Starting Problems? (1 reply)
  137. Kicker Invoice (0 replies)
  138. Leak Jet (15 replies)
  139. Need Help (3 replies)
  140. Need Some Jetting Help! (5 replies)
  141. Cp Piston Question (16 replies)
  142. Rough Running..valve Adj.? Timing? Jetting? (11 replies)
  143. Help Clutch Switch Not Engaging! (4 replies)
  144. Glamis / Oldsmobile Hill (11 replies)
  145. Looking For Some Feed Back (3 replies)
  146. Venom And Wisco Piston Side By Side (21 replies)
  147. Problem With Over Heating (4 replies)
  148. Bent Exhaust Flange (9 replies)
  149. Starting Problem? (0 replies)
  150. Piston Break In (4 replies)
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