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Yamaha Piston Kit Applications
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YZFR1 997cc PISTON KIT  Yamaha YZF R1 1998-2003, 997cc piston kit
74mm Bore, 13:1 Compression Ratio
Cylinders require deglaze only 		   £517.50   
YZ250F 01-02 249CC
Big Bore Kit 		 Yamaha YZ250F 249cc big bore kit
77mm bore size, 13:1 Compression Ratio
STD Bore size
Cylinders require deglaze only 		   £143.75   
YZ250F 01-02 263cc
Big Bore Kit 		 Yamaha YZ250F 263cc big bore kit
79mm bore size, 13:1 Compression Ratio
2mm Overbore size
Cylinders require bore and plate 		   £143.75   
XTZ660 2001 660cc
Big Bore Kit 		 Yamaha XTZ660 660cc big bore kit
100mm bore size, 12:1 Compression Ratio
STD Bore size
Cylinders require deglaze only 		   £143.75   
XTZ660 2001 686cc
Big Bore Kit 		 Yamaha XTZ660 686cc big bore kit
102mm bore size, 12:1 Compression Ratio
2mm Overore size
Cylinders require bore and hone 		   £143.75   
YZ400/WR400F 98-99 399cc
Big Bore Kit 		 Yamaha YZ400/WR400F 399cc big bore kit
92mm bore size, 12.5:1 Compression Ratio
STD bore size
Cylinders require deglaze only 		   £143.75   
YZ400/WR400F 98-99 417cc
Big Bore Kit 		 Yamaha YZ400/WR400F 417cc big bore kit
94mm bore size, 12.5:1 Compression Ratio
2mm Overbore size
Cylinders require bore and plate 		   £143.75   
YZ400/WR400F 00-01 426cc
Hi Comp Kit 		 Yamaha YZ400/WR400F 426cc big bore kit
95mm bore size, 12.5:1 Compression Ratio
STD Bore size
Cylinders require deglaze only 		   £143.75   
YZ400/WR400F 00-01 446cc
Big Bore Kit 		 Yamaha YZ400/WR400F 446cc big bore kit
97mm bore size, 12.5:1 Compression Ratio
2mm Overbore size
Cylinders require bore and plate 		   £143.75   
XT600 84-96 621cc
Big Bore Kit 		 Yamaha XT600 621cc big bore kit
97mm bore size, 11.5:1 Compression Ratio
2mm Overbore size
Cylinders require bore and hone 		   £143.75   
YZFR6 1999-2005 637cc
Big Bore Kit 		 Yamaha XTZ660 686cc big bore kit
102mm bore size, 10.75:1 Compression Ratio
2mm Overore size
Cylinders require bore and hone 		   £517.50   
XTZ660 2001 686cc
Big Bore Kit 		 Yamaha XTZ660 686cc big bore kit
102mm bore size, 10.75:1 Compression Ratio
2mm Overore size
Cylinders require bore and hone 		   £143.75   
FZR1000 1989-1996 1040cc
Big Bore Kit 		 Yamaha YZFR1 1052cc Big Bore Kit
76mm Bore Size 13.1:1 Compression Ratio
Cylinders require bore and replate 		   £517.50   
YZFR1 1998-2003 1052cc
Big Bore kit 		 Yamaha YZFR1 1052cc Big Bore Kit
76mm Bore Size 13.1:1 Compression Ratio
Cylinders require bore and replate 		   £517.50   
V Max 1300cc
Big Bore Kit 		 V Max 1300cc Big Bore Kit
79mm Bore, 12:1 Compression Ratio
2mm Overbore Size
Barrels require bore and hone 		   £575.00   
XJR1300 1380cc
Big Bore Kit 		 Yamaha XJR1300 1380cc Big Bore Kit
83mm Bore, 11:1 Compression Ratio
6mm Overbore Size
Barrels require bore and hone 		   £575.00