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Complete screw-on kit.
Compatible with stock 114 engines, which have the required 4.5" stroke.
Converts 114" engine to 128".
It includes black wrinkled cylinders with highlighted fins and a 4.250" forged piston and ring kit with a 1.0805" deck height and -7.2cc plate volume for an 11:1 CR with stock cylinder head combustion chamber volume.
including all necessary gaskets and hardware for the head and base.
Provides a massive increase in capacity with easy bolt-on installation, with no need to drill the case, work on the headstock, or rebalance the flywheel.
Note: S&S recommends S&S Head Bolt Kit 576972 for all large diameter applications.
Fits: > 17-21 114" M8
S&S 114" to 128" Big Bore Conversion Piston and Cylinder Kit
2,009.05 €
Sale price
2,009.05 €
Regular price
Compatible with stock 114 engines, which have the required 4.5" stroke.
Converts 114" engine to 128".
It includes black wrinkled cylinders with highlighted fins and a 4.250" forged piston and ring kit with a 1.0805" deck height and -7.2cc plate volume for an 11:1 CR with stock cylinder head combustion chamber volume.
including all necessary gaskets and hardware for the head and base.
Provides a massive increase in capacity with easy bolt-on installation, with no need to drill the case, work on the headstock, or rebalance the flywheel.
Note: S&S recommends S&S Head Bolt Kit 576972 for all large diameter applications.
Fits: > 17-21 114" M8