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  1. is big bore kit reliable??

    Yamaha YFZ450/450R (2004-Present)
    Hello guys. I need your advice, I just ported my head and now i need to buy new cylinder and new piston for my 07 yfz. My quad is road legal so i'll ride mainly on street. I also have Yoshimura full system and FCI intake. I have 2 options: stay stock with 95mm CW Cylinder and 13.1 CP Piston...
  2. Raptor 700 734cc Big Bore Kits

    Parts for Sale
    Hi everyone! This is Jaymes from Trinity Racing. I wanted to offer everyone on a very special price on our Raptor/Rhino/Grizzly 700 734cc Big Bore Kit. $550.00 Original price: $699.99 We want you to see the quality of our cylinder and how it compares to the others on the market...