Compatible with Yamaha models:
Raptor 660R YFM660R 2001-2005

Part Number and Dimensions:
Muffler : 5LP-14711-10-00
Height: 188.7 mm | 7.38 "
Length: 565.15 | 22.25 "
Mounting Hole Space: 165 mm | 6.5 "

Muffler Header Pipe: 5LP-14621-00-00
Height: 173.3 mm | 6.98 "
Lengt : 706.1 mm | 27.8 "

Muffler Pipe: 5LP-14611-00-00
Height: 170.2 mm | 6.70 "
Length: 194.6 mm | 7.66 "

Gasket: 3YF-14714-00-00, 1JK-14714-0-00, 4H7-14755-00-00, 5ND-E4714-00-00, 3YF-14714-00-00
Inner Diameter: 32 mm | 1.25 "
Outer Diameter: 37.5 mm | 1.47 "
Width: 31 mm | 1.22 "

Gaskets: 3YF-14613-01-00, 5Y1-14613-00-00
Inner Diameter: 32 mm | 1.26 "
Outer Diameter: 42 mm | 1.65 "
Width: 3.3 mm | 0.13 "

Gasket: 5LP-14714-00-00, 2LS-E4714-00-00
Inner Diameter: 42 mm | 1.65 "
Outer Diameter: 46.6 mm | 1.83 "
Width: 25.5 mm | 1.0 "