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Big Bore & Stage Kits

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S&S CYCLE 128" Power Package - Chain Drive - Wrinkle Black with Highlighted Fins - Oil Cooled 114"/117" M8

S&S CYCLE
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Earn $158.50 with Mega Bucks

Features Made in the USA Big Bore Kit Big-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight to 128" with no case machining require...

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$3,109.95 - $3,109.95
$3,109.95
$3,109.95
$3,109.95 - $3,109.95
$3,109.95

S&S CYCLE 128" Power Package Engine Performance Kit - Chain Drive

S&S CYCLE
Out of stock
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Ships within 1 Business Day
Earn $155.50 with Mega Bucks

Features Big-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight with no case machining required 4-1/4" bore cylinders with 11:1 forge...

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$3,169.95 - $3,169.95
$3,169.95
$3,169.95
$3,169.95 - $3,169.95
$3,169.95

S&S CYCLE 128" Power Package - Chain Drive - Black Granite with Highlighted Fins - 114"/117" M8

S&S CYCLE
Out of stock
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Ships within 1 Business Day
Earn $158.50 with Mega Bucks

Features Made in the USA Big Bore Kit Big-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight to 128" with no case machining require...

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$3,359.95 - $3,359.95
$3,359.95
$3,359.95
$3,359.95 - $3,359.95
$3,359.95

S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Water Cooled - Highlighted Fins - M8

S&S CYCLE
Out of stock
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Ships within 1 Business Day
Earn $168.00 with Mega Bucks

Features Transform the 114" or the 117" water-cooled M8 into 132" Adjustable pressure relief valve can be adjusted with unit installed in the engi...

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$3,559.95 - $3,559.95
$3,559.95
$3,559.95
$3,559.95 - $3,559.95
$3,559.95

S&S CYCLE 132" Power Package Engine Performance Kit - Gear Drive - Water Cooled - Highlighted Fins - M8

S&S CYCLE
Out of stock
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Ships within 1 Business Day
Earn $178.00 with Mega Bucks

Features Transform 107" oil-cooled M8 into 129" with no case machining required Big bore cylinders come with matching cam, cam plate and oil pump ...

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$3,359.95 - $3,359.95
$3,359.95
$3,359.95
$3,359.95 - $3,359.95
$3,359.95

S&S CYCLE 129" Power Package Engine Performance Kit - Gear Drive - Oil Cooled - Highlighted Fins - M8

S&S CYCLE
Out of stock
Free Shipping
Ships within 1 Business Day
Earn $168.00 with Mega Bucks

Features Transform 107" oil-cooled M8 into 129" with no case machining required Big bore cylinders come with matching cam, cam plate and oil pump ...

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$3,359.95 - $3,359.95
$3,359.95
$3,359.95
$3,359.95 - $3,359.95
$3,359.95

S&S CYCLE 132" Power Package Engine Performance Kit - Gear Drive - Oil Cooled - Non-Highlighted Fins - M8

S&S CYCLE
Out of stock
Free Shipping
Ships within 1 Business Day
Earn $168.00 with Mega Bucks

Features Transform the 114" or the 117" oil-cooled M8 into 132" Adjustable pressure relief valve can be adjusted with unit installed in the engine...

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$3,359.95 - $3,359.95
$3,359.95
$3,359.95
$3,359.95 - $3,359.95
$3,359.95

S&S CYCLE 132" Power Package Engine Performance Kit - Gear Drive - Water Cooled - Highlighted Fins - M8

S&S CYCLE
Out of stock
Free Shipping
Ships within 1 Business Day
Earn $168.00 with Mega Bucks

Features Transform the 114" or the 117" water-cooled M8 into 132" Adjustable pressure relief valve can be adjusted with unit installed in the engi...

View full details
Sold out
$3,359.95 - $3,359.95
$3,359.95
$3,359.95
$3,359.95 - $3,359.95
$3,359.95

S&S CYCLE 129" Power Package Engine Performance Kit - Gear Drive - Oil Cooled - Non-Highlighted Fins - M8

S&S CYCLE
Out of stock
Free Shipping
Ships within 1 Business Day
Earn $168.00 with Mega Bucks

Features Transform 107" oil-cooled M8 into 129" with no case machining required Big bore cylinders come with matching cam, cam plate and oil pump ...

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Sold out
$3,359.95 - $3,359.95
$3,359.95
$3,359.95
$3,359.95 - $3,359.95
$3,359.95

S&S CYCLE 129" Power Package Engine Performance Kit - Gear Drive - Oil Cooled - Highlighted Fins - M8

S&S CYCLE
Out of stock
Free Shipping
Ships within 1 Business Day
Earn $168.00 with Mega Bucks

Features Transform 107" oil-cooled M8 into 129" with no case machining required Big bore cylinders come with matching cam, cam plate and oil pump ...

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$1,509.95 - $1,509.95
$1,509.95
$1,509.95
$1,509.95 - $1,509.95
$1,509.95

S&S CYCLE Cylinder & Piston Kit - 131" Stroker - Wrinkle Black w/o Highlighted Fins - M8 '17-'23

S&S CYCLE
Out of stock
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Earn $75.50 with Mega Bucks

Features Huge displacement increase means huge power increase Bolt-on kit works with the stock crankcase Original engine serial numbers are retain...

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$1,499.95 - $1,499.95
$1,499.95
$1,499.95
$1,499.95 - $1,499.95
$1,499.95

S&S CYCLE 129" Big Bore Cylinder Kit - Wrinkle Black w/o Highlighted Fins - For 107" Engine - M8 '17-'23

S&S CYCLE
Out of stock
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Earn $75.00 with Mega Bucks

Features Bolt-on without requiring machining of the crankcase Original engine serial numbers are retained MLS (multi-layered steel) head gaskets R...

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$3,109.95 - $3,109.95
$3,109.95
$3,109.95
$3,109.95 - $3,109.95
$3,109.95

S&S CYCLE 128" Power Package - Chain Drive - Wrinkle Black with Non-Highlighted Fins - 114"/117" M8 '17-'23

S&S CYCLE
Out of stock
Free Shipping
Ships within 1 Business Day
Earn $155.50 with Mega Bucks

Features Made in the USA Big Bore Kit Big-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight to 128" with no case machining require...

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$1,649.95 - $1,649.95
$1,649.95
$1,649.95
$1,649.95 - $1,649.95
$1,649.95

S&S CYCLE 132" Cylinder Kit - 4.500" Stroke - Wrinkle Black w/Highlighted Fins - M8 '17-'23

S&S CYCLE
Out of stock
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Ships within 1 Business Day
Earn $82.50 with Mega Bucks

Features Original engine serial numbers are retained MLS (Multi-Layered Steel) head gaskets Retains stock engine height Stock bolt pattern Notes ...

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$3,359.95 - $3,359.95
$3,359.95
$3,359.95
$3,359.95 - $3,359.95
$3,359.95

S&S CYCLE 129" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 '17-'23

S&S CYCLE
in stock
Free Shipping
Ships within 1 Business Day
Earn $168.00 with Mega Bucks

Features Transform 107" oil-cooled M8 into 129" with no case machining required Big bore cylinders come with matching cam, cam plate and oil pump...

View full details
$3,359.95 - $3,359.95
$3,359.95
$3,359.95
$3,359.95 - $3,359.95
$3,359.95

S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Non-Highlighted Fins - M8 '17-'23

S&S CYCLE
in stock
Free Shipping
Ships within 1 Business Day
Earn $168.00 with Mega Bucks

Features Transform the 114" or the 117" oil-cooled M8 into 132" Adjustable pressure relief valve can be adjusted with unit installed in the engin...

View full details
$3,359.95 - $3,359.95
$3,359.95
$3,359.95
$3,359.95 - $3,359.95
$3,359.95

S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 '17-'23

S&S CYCLE
in stock
Free Shipping
Ships within 1 Business Day
Earn $168.00 with Mega Bucks

*SHIPPING TO THE USA & CANADA ONLY!!!EXCLUDING CALIFORNIA  Features Transform the 114" or the 117" oil-cooled M8 into 132" Adjustable pressu...

View full details
$3,359.95 - $3,359.95
$3,359.95
$3,359.95
$3,359.95 - $3,359.95
$3,359.95

S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 '17-'23

S&S CYCLE
in stock
Free Shipping
Ships within 1 Business Day
Earn $168.00 with Mega Bucks

*SHIPPING TO THE USA & CANADA ONLY!!!EXCLUDING CALIFORNIA  Features Transform the 114" or the 117" oil-cooled M8 into 132" Adjustable pressur...

View full details
$3,359.95 - $3,359.95
$3,359.95
$3,359.95
$3,359.95 - $3,359.95
$3,359.95

S&S CYCLE 129" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Non-Highlighted Fins - M8 '17-'24

S&S CYCLE
in stock
Free Shipping
Ships within 1 Business Day
Earn $168.00 with Mega Bucks

*SHIPPING TO THE USA & CANADA ONLY!!!EXCLUDING CALIFORNIA  Features Transform 107" oil-cooled M8 into 129" with no case machining required Big...

View full details
$3,359.95 - $3,359.95
$3,359.95
$3,359.95
$3,359.95 - $3,359.95
$3,359.95

S&S CYCLE 132" Power Package Engine Performance Kit - Chain Drive - Oil Cooled - Highlighted Fins - M8 '17-'23

S&S CYCLE
in stock
Free Shipping
Ships within 1 Business Day
Earn $168.00 with Mega Bucks

*SHIPPING TO THE USA & CANADA ONLY!!!EXCLUDING CALIFORNIA  Features Transform the 114" or the 117" oil-cooled M8 into 132" Adjustable pressure...

View full details