Mudbuster: Single-cam engine. Improved acceleration, more bottom-end, and no top-end loss. Must use Raptor 660 center intake valve spring (not included). Uses stock auto decompression mechanism.
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- Specs: Camshaft, Mud buster: Single cam engine. Improved acceleration, more bottom-end, and top-end loss. Must use Raptor 660 center intake valve spring, NOT included. All other valve springs stock. Uses stock auto-decompression mechanism.
- Meets or Exceeds OEM Specs for Fit and Performance
- Compatible With/Replacement For: ATV Yamaha YFM 660 F Grizzly 4x4 2002-2008, UTV Yamaha YXR 660 F Rhino 660 2004-2007
- 100% New aftermarket Camshaft built to meet OEM specifications
