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YFZCentral > :::YFZ450 Performance::: > Powertrain
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  1. What Part Is This? (2 replies)
  2. Engine Case (7 replies)
  3. Cheap Exaust "that Works" (8 replies)
  4. Have A Big Problem (23 replies)
  5. Need A Part Number (3 replies)
  6. Cam Mod And Aftermarket Cams (5 replies)
  7. Will Any Yfz Head (4 replies)
  8. Installed Kick Start And Bike Will Not Start (4 replies)
  9. Cam Questions (4 replies)
  10. Quad Runs Great For 10 Mins Then Dies (5 replies)
  11. Cheap Exhaust (71 replies)
  12. Gettin Too Much Fuel? (30 replies)
  13. Worth It? Change From New Style Gytr To Nmotion/jsr - If You Know, Ste (8 replies)
  14. Cheapest Oem Dealer? (15 replies)
  15. High Rpm Miss (8 replies)
  16. In Need Of Carb Help (2 replies)
  17. Questions After First Rebuild And First Start Up (9 replies)
  18. Gas In Oil (8 replies)
  19. Not A Yfz Question But Maybe Someone Will Know? (6 replies)
  20. Kickstart Questions. (2 replies)
  21. Main Crank Bearing. (2 replies)
  22. Lost And Need Help! (7 replies)
  23. Motorwork Question (47 replies)
  24. Connection Id (3 replies)
  25. Best Oil After Rebuild (19 replies)
  26. Valve Specs (2 replies)
  27. 480 14.25:1 Jetting?, List Your 480 Jetting- Stock Carb (0 replies)
  28. No Spark Until (5 replies)
  29. 2 Piece Or 1 (1 reply)
  30. Clutch Friction Plates (11 replies)
  31. 12 : 1 Piston? 12.25: 1 ? (5 replies)
  32. Valve Adjustment (18 replies)
  33. Cam Set Up (20 replies)
  34. Yoshimura Pipe (11 replies)
  35. Cleaning Head (7 replies)
  36. Gearing (3 replies)
  37. 98 Yz Lever (11 replies)
  38. Swear By Chains? (4 replies)
  39. Big Bore (4 replies)
  40. Yfz450 Bike W/wr400 Motor. Wtf (7 replies)
  41. Need Major Carb Help (10 replies)
  42. Head Swap? (3 replies)
  43. Moose Throttle Easy Pull (0 replies)
  44. Help! (5 replies)
  45. Valve Clearences (2 replies)
  46. Stupid Fan (13 replies)
  47. Yfz Clutch (2 replies)
  48. What Octane? Am I Wasting $$ (22 replies)
  49. New Motor Build, 502cc Bored & Stroked, 42mm Carb Flowed Head (14 replies)
  50. Cp Piston (12 replies)
  51. Piston (7 replies)
  52. Piston Replace After 20 Hours? (35 replies)
  53. Ris Designs Exhaust (5 replies)
  54. Need Help! (6 replies)
  55. Couple Questions (8 replies)
  56. Bike Won't Start Sometimes. (16 replies)
  57. Gytr Header (2 replies)
  58. Stroker Crank Compression (1 reply)
  59. 06 Yfz450 Died And Will Not Start (7 replies)
  60. Fuel Screw (20 replies)
  61. Spun Bearing? Need Help (1 reply)
  62. Cam Mod/ Valve Adjustment (5 replies)
  63. Setting Timing (4 replies)
  64. Yfz Rad Armour (17 replies)
  65. Wr Crank + Piston Balancing(vibration) (3 replies)
  66. 04 450 Not Turning Over (6 replies)
  67. Jetting / Leak Jet.. (4 replies)
  68. Whats The Latest And Greatest Clutch Set Up? (6 replies)
  69. Replacing The Clutch Plates. (7 replies)
  70. How Is Your Piston Holding Up? (10 replies)
  71. Jetting (12 replies)
  72. Help On Jetting (3 replies)
  73. Yz250 Hybrid Need Help! (3 replies)
  74. Time For New Clutch (1 reply)
  75. Do I Need New Spring For 13,1 Cp Pistons? (3 replies)
  76. Fueling Issues (7 replies)
  77. Valves , Jetting Or Plug Problem? (2 replies)
  78. Cuts Out (4 replies)
  79. Running Temperature (5 replies)
  80. Motor Rebuild Questions. (2 replies)
  81. Hotrods Non Stoker Oem Replacement Crank (19 replies)
  82. Engine Assembly Questions (3 replies)
  83. Electrical Issue (5 replies)
  84. What Cams Do I Go With On Built Motor? (6 replies)
  85. Stock Valve Size (1 reply)
  86. Tps Bypass? (14 replies)
  87. Pro Design Dual Stage... (2 replies)
  88. Big Bore? Porting And +1 Valves? (2 replies)
  89. Carb Draining Fuel.. (1 reply)
  90. No Start And Clutch Lever Shocking (9 replies)
  91. 07 Yfz450 Running Problems! Help A Noob (4 replies)
  92. Parts Question (3 replies)
  93. Fmf Megabomb Header (10 replies)
  94. Haus (3 replies)
  95. Valve Guide Quesiton (3 replies)
  96. Timing Chain Guide Intake Side (3 replies)
  97. Weird Smell Out Of Exhaust (5 replies)
  98. Full Throttle Bog (3 replies)
  99. Rec Head Or Ti Head (3 replies)
  100. Hot Rods Wr Crank And Cp Piston (5 replies)
  101. Dynateck Programable Ignition? (2 replies)
  102. Clutch Mod Gone Bad! Help Plz (8 replies)
  103. Clutch Problem (4 replies)
  104. 09 Running Horrible (3 replies)
  105. Who Has Ran The Monster Big Core Exhaust (1 reply)
  106. Wiered Problem! (6 replies)
  107. Electrical Gurus (7 replies)
  108. Side Case Question (10 replies)
  109. New Exhaust Jet Question (3 replies)
  110. Engine Problem (5 replies)
  111. Please Help (does This Belong In My Clutch Case) (7 replies)
  112. Help No Spark Sometimes (0 replies)
  113. Need Help! Backfiring And Idle Problem (4 replies)
  114. Any Have Experience With Hr Exhaust? (3 replies)
  115. Yfz On Cruise Control (2 replies)
  116. Only Fires Up With Throttle Wide Open (21 replies)
  117. Gytr Air Filter (0 replies)
  118. Need Insight... (11 replies)
  119. Wiseco Piston (18 replies)
  120. Head Porting And Venom Piston (7 replies)
  121. Head Gasket Repair Kit (9 replies)
  122. Starter Idler Gear Install Question... (0 replies)
  123. Bog Gone, Now Backfiring (4 replies)
  124. Attention Weekend Warriors (25 replies)
  125. Yfz Clutch (7 replies)
  126. Cam Mod Question! (8 replies)
  127. 05 Rebuild (1 reply)
  128. Bolt Pattern On Jug (2 replies)
  129. Where Can I Find... (12 replies)
  130. Newbie Jet Question (10 replies)
  131. Kick Start Lever Extender (0 replies)
  132. 05' Crank To Replace 06' (1 reply)
  133. Engine Tension (5 replies)
  134. Adj Fuel Screw (3 replies)
  135. Broken Case (10 replies)
  136. Help (5 replies)
  137. Quad Will Not Rev Out At All When Trying To Ride It Before It Starts T (2 replies)
  138. Cut Out And Flames Out The Exhaust (3 replies)
  139. Crank Compatibility And Part Identification (4 replies)
  140. Venom Products (2 replies)
  141. No Spark Problem (5 replies)
  142. Leak Jet (10 replies)
  143. Leak Jet (15 replies)
  144. Valve Bucket Destroyed (9 replies)
  145. Relation Between Aftermarket And Stock Stator (0 replies)
  146. Help My Quad Cuts Off At Full Throttle! (12 replies)
  147. Another Jetting Question (7 replies)
  148. MOVED:Graphics (-- replies)
  149. Charging System (3 replies)
  150. Wont Start.. (11 replies)
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