World's Largest Aftermarket Motorcycle Parts and Accessories Superstore!


Memorial Day Sale. Shop Now.
Memorial Day Sale. Shop Now.

S&S Cycle Assembled Cylinder Heads

Select your motorcycle to guarantee fitment! Select A Motorcycle

  • S&S Cycle Assembled Cylinder Heads
Product may vary from photo(s).


The Gold Club is our premier membership program. For most items members receive 10% off every day, plus exclusive sales and benefits just for members. More Info Add to Cart to View Gold Club Price

Free Ground Shipping

Checking availability...

– Order in the next to ship today

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


Select your motorcycle to guarantee fitment! Select A Motorcycle

Click (+) to view all compatible models

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

Shipping Note

Additional oversized shipping charges will be applied for expedited shipments within the contiguous U.S. Shipping charges outside the contiguous U.S. are calculated by weight and dimension during checkout.

Fast Free Shipping on Orders at $99.99 & Over
Free Tech
120 Day

Select Your Motorcycle

Live Help

Get Help From Our Industry Experts

Call Us 24/7 1-800-318-4823

Help / FAQs