Part No. 56-W9732.8100
YAMAHA XS650 1974-1981 ,
WISECO 8635P81 PISTON KIT 81.00mm Bore.
Wiseco Pistons included in these assemblies are the same great pistons you can buy from us individually and are forged and machined in the USA to receive a full compliment

of power enhancing features. Light weight forgings, millimeter ring packs, extra-strength forgings, gas ports, optimized skirt profiles, skirt coatings, offset pins, and a variety of other features are available depending on your application. Our sport compact pistons come with the Nitride Steel top and Napier 2nd XX ring packs for the ultimate in sealing and durability.
RING SET 3189XC