Dimensionally identical to OEM valves while offering many advantages
Athena is renowned for its cutting-edge engineering and superior materials
Crankworks +10mm forged crankshaft with 115mm rods
this is a bolt-on kit with no machining required
Please see the listed options below
Yamaha Rhino 660 102mm CP Carrillo Big Bore 12:1 686cc Piston & Cometic Gaskets Warrior 350 Dimensionally identical to OEM valvesC7798,4811M10200,4966M10200,5KM 11310 00 00,80 82600,80 82600,YF 11181 00 00,810852,191070043070,3YF 11351 00 00,3YF 11181 00 00,2C6 11603 00 00,93450 24028 00,3YF 11631 00 X0,3YF 11633 01 00,90201 102G9 00,90105 10649 00,90105 09648 00,C7798 EST,DPR 8EA90 00 00,3YF 11310 01 00,261528,261527,272149,M1016B,8507D200< Unlock the full power of your Yamaha 660 with this top of the line Big Bore Top End Kit. Squeeze every last ounce of power from your