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Wiseco Yamaha XT/TT/SR500 10:1 3rd over 1.50mm

Manufacturer #:4045M08850

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Please allow 7 working days for delivery 
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Displacement:  508cc
Bore - Standard:  87.00mm
Bore - Actual:  88.50mm
Bore - Oversize:  1.50mm
Stroke:  84.00mm
Compression Ratio - Actual:  10:1
Note:  Cylinder boring requiredp