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  1. Jetting Question 1100 Ftat M (1 reply)
  2. Help! Irregular Spark (1 reply)
  3. Please Help (2 replies)
  4. Need Some Jetting Help (2 replies)
  5. Ideas To Quiet Down Gytr Exhaust (9 replies)
  6. Just Rebuild Do I Need Rejet (3 replies)
  7. Cam Prefernce? (4 replies)
  8. Installing A Kick Start On The Yfz. Whats The Best Price On A Kicker? (8 replies)
  9. My First 450 (18 replies)
  10. Dr.d Ss D-style Full System Exhaust (0 replies)
  11. 05 Eating Batteries (1 reply)
  12. Major Over Heating Problem.. (0 replies)
  13. Jetting Recommendation (4 replies)
  14. 06 Yfz 450 Bottom End Explosion (3 replies)
  15. 20% Off Wiseco Pistons (3 replies)
  16. Dont Think I Received The Right Compression Piston.. (17 replies)
  17. E-85? (3 replies)
  18. Piston Rings (0 replies)
  19. New Cases Or What? (11 replies)
  20. My Build And Porting Question (5 replies)
  21. How Do I Make An 04 05 True 450? (7 replies)
  22. Head Porting (40 replies)
  23. Best Place To Purchase A Cp Piston 12.5 (8 replies)
  24. Big Prob Lost (3 replies)
  25. What To Use For Oil And Cleaning Filter? (5 replies)
  26. Fuel/air Screw Mixture Screw (1 reply)
  27. I Need Your Opinion.... Everyone (9 replies)
  28. Need Help Jetting!asap (3 replies)
  29. 05 W/06 Crank Piston Setup (3 replies)
  30. Need Help Sprockets Wont Line Up! (3 replies)
  31. Wr? (2 replies)
  32. What Do You Recomend? (21 replies)
  33. Biggest Reliable Stroker/bb Kit (19 replies)
  34. News About Cylinder Works (3 replies)
  35. Will Rain .. (3 replies)
  36. Anybody Have A Write Up For The Sticking Gear Problem? (14 replies)
  37. Will A 08 Motor Work On A 04 (3 replies)
  38. Need Help Badly....motor Wont Run Properly.update. (33 replies)
  39. Engine Year (7 replies)
  40. Can A Motor Unseize Its Self? (5 replies)
  41. Need Help Asap (7 replies)
  42. Anyone With A Big Bore Please Read! (5 replies)
  43. Cheap Race Fuel (46 replies)
  44. Rev Box With Launch Control? (2 replies)
  45. Little Help (9 replies)
  46. Yfz Wont Start After Rebuild (5 replies)
  47. Yfz450-raptor 660 (5 replies)
  48. Heavy Duty Springs Or Yz Clutch Mod (3 replies)
  49. Just Want To Check With You Guys.... (2 replies)
  50. 07 Yfz Jet Kit (2 replies)
  51. Fci? Price (11 replies)
  52. How Do I Quiet Down A 9" Nmotion (14 replies)
  53. Quick Shot (10 replies)
  54. Crankcase Breather Set Ups (15 replies)
  55. 08 Needle (3 replies)
  56. Power Shifting (22 replies)
  57. Hmf Head Pipe..... (5 replies)
  58. Lrd Pro+4r Headpipe Broke Off! (3 replies)
  59. Kick Start Conversion (2 replies)
  60. Tusk Head Gasket? (2 replies)
  61. 06 Whadda U Think? (7 replies)
  62. Hetrick Racing (32 replies)
  63. Head Gasket...dry Or Use? (9 replies)
  64. Which Year Yfz's Have Crank Problems? (3 replies)
  65. Cometic Head Gasket With O Ringed Cylinder? (1 reply)
  66. Lockout Clutch (3 replies)
  67. Ebay Clutch (1 reply)
  68. Shim Bucket Problem (12 replies)
  69. Looking At Buying A Head On Ebay (3 replies)
  70. How Often Do You Use Shim Kits? (6 replies)
  71. Broke Timing Chain? (7 replies)
  72. Minimum Octane For 12.25:1 Compression (5 replies)
  73. Thick Head Gasket (13 replies)
  74. Best Method To Measure Squish On Yfz Head? (0 replies)
  75. Need Help (3 replies)
  76. MOVED:Gytr Kick Crank. (-- replies)
  77. Will This Work With Pump Gas? (3 replies)
  78. Clutch Slipping!? (1 reply)
  79. Big Bore Or High Compression And Port Job? (9 replies)
  80. Slide Sticking? (3 replies)
  81. Resistor Help 06+ (3 replies)
  82. Carb Problems (5 replies)
  83. Thinking About Getting A Aftermarket Rev Box (21 replies)
  84. Intake Vavles (1 reply)
  85. Yfz Stock Cam Specs Help Please (3 replies)
  86. Motor Build, Clutch Options (5 replies)
  87. Sprocket Nut Thread Size (19 replies)
  88. Need Help Asap (10 replies)
  89. Motor Rebuild (2 replies)
  90. Quick Case Question (3 replies)
  91. How To Tell If My 06 Has Oil Mod Done To It (1 reply)
  92. Exhaust (15 replies)
  93. Wr450 Crank In Yfz (4 replies)
  94. Yfz Wire Harness And Kicker Kit (11 replies)
  95. Best Valves (6 replies)
  96. Cluch Case Leaks (2 replies)
  97. MOVED:I Razr Vs Razr 2's (-- replies)
  98. Valves (3 replies)
  99. 400 Dirt Bike Head On 06yfz 450 (8 replies)
  100. Egine Case Cracked (4 replies)
  101. Need Help (3 replies)
  102. Jetting Questions (5 replies)
  103. Engine Build Opinions (5 replies)
  104. Yfz (1 reply)
  105. Yfz450 Head Help (1 reply)
  106. Billet Engine Cooler? (6 replies)
  107. Side By Side Pics Of Venom And Yfz Stock Piston (12 replies)
  108. Relay (3 replies)
  109. 05 Yfz Need Help (5 replies)
  110. Dasa Vs Gytr (5 replies)
  111. Starter Relay (0 replies)
  112. Jetting A Little Off (1 reply)
  113. Oil Types? (7 replies)
  114. Air Screw Will Not Turn! (3 replies)
  115. Gytr Exhaust And Intake (15 replies)
  116. Jetting Problems (1 reply)
  117. Carb Issues (3 replies)
  118. Jetting Gone Wrong (9 replies)
  119. Cams Or High Compression Piston (2 replies)
  120. Novice Mechanic (19 replies)
  121. Bike Won't Start (4 replies)
  122. Rekluse (13 replies)
  123. 05 Yfz No Start (bogged Down) (5 replies)
  124. Changed Head Gasket, Now No Start (10 replies)
  125. Overide Transmission (0 replies)
  126. Sticky Revs And Wont Run Without Choke (6 replies)
  127. Would A Kickstart Kit (0 replies)
  128. What Exhaust Is Good? (12 replies)
  129. Fci Question (16 replies)
  130. New Top End (1 reply)
  131. Compression Ratio (1 reply)
  132. Another Cylinder Question (1 reply)
  133. Cw Cylinder (4 replies)
  134. Clutch Problem (2 replies)
  135. Witch Exhaust? (11 replies)
  136. Rebuilding The Motor (7 replies)
  137. Kickstart Internals (2 replies)
  138. Dyna Programmable Fs Digital Ignitions (3 replies)
  139. Rev Box (22 replies)
  140. Clear Rad Hoses (1 reply)
  141. Put In 13:5:1 Piston During Complete Rebuild, Now It Wont Start (18 replies)
  142. Edlebrock Carb? (9 replies)
  143. Carb Spring (2 replies)
  144. Help Asap Clutch Wont Engage (5 replies)
  145. Loss Of Power On Top Side (7 replies)
  146. Throttle Spring Mod Done And Now The Jetting Has Changed (6 replies)
  147. Cracked Case (5 replies)
  148. New To Yfz's Could Use Some Info (29 replies)
  149. Oem Yfz Crank Vs. Wr 450 Crank (1 reply)
  150. Head Problem (4 replies)
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