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For 1981-83 Yamaha XJ650Made in the USA
Custom Big Bore Pistons Kit !

Choice of 65.5mm or 66mm Piston size
(2.5mm or 3mm oversize)

FEATURING:
- 10.5:1 Compression
- Contact Reduction Grooves
- Lateral Gas Porting
- Accumulator Grooves
- Forged and Diamond Cut on CNC machine in the USA!

 

KIT #1 - 65.5mm
Pistons/Rings/Pins/Clips/CFM20 Head Gasket
$695.00

 

 
KIT #2 - 66mm
Pistons/Rings/Pins/Clips/CFM20 Head Gasket
$695.00

 

 

 

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