Stock Big Twin 80" piston kit - 3 1/2" +0.02"

For original 80" big twin engines
Forged pistons for superior strength
Piston kits include pistons, rings, gudgeon pins and circlips.
Piston pin height 1.270"
Made in the USA
Requires the use of connecting rods with a length of 7.440" (standard OEM length #24281-74A); the use of previous 7.470" connecting rods (OEM #24281-41A) will result in a slight increase in compression ratio of approximately half a point and may cause clearance issues (check all piston and head tolerances when using older connecting rods).



Specifications


Brand
S&S CYCLE


Supplier reference
106-5521


Engine capacity
80"


Cylinder bore - oversize
+0,020"


Cylinder bore - oversize
+0,020"


Cylinder Dimensions
3,520"


Stroke length
4-1/4"


Piston material
Forged


Product name
Piston kit


Compression ratio
9,0:1


Compression ratio
9,0:1


Type
High compression


Units
Kit