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S&S Cycle Assembled Cylinder Heads

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  • S&S Cycle Assembled Cylinder Heads
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J&P Part: 420-415


S&S Cycle Assembled Cylinder Heads

• Fully assembled S&S Cycle heads for stock and 3-5/8″ bore Evolution engines were originally designed for engines using stock crankcases

• 3-1/2″ bore heads can be used with stock cylinders

• Although these heads are machined with the stock Evolution cylinder pattern and may be used on stock crankcases, special pistons are required with a “pop up” dome shape that matches the contour of the S&S Cycle combustion chamber for maximum performance

• Natural finish

Made In The USA This product was proudly made in the USA

Important Product Notes

Product Specs

Cylinder Bore Size: 3-1/2″ standard bore

Finish: Natural

Manufacturer Part Number: 90-1305

Sold in Units: Kit


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Buell Models

Cyclone M2 : 1997–2002
Lightning S1 : 1996–1998
Lightning X1 : 1999–2002
Thunderbolt S2 : 1995–1996
Thunderbolt S2T : 1995–1996
Thunderbolt S3 : 1997–2002
Thunderbolt S3T : 1997–2000
White Lightning S1W : 1998

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