S&S CYCLE Cylinder Kit — 4.25" bore, 4.625" stroke, 131 cu in, 11.0:1 compression, Highlighted Fins – 18-25 Softail, 21, 23-25 Touring, 17-25 Trike, 20-22 CVO
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Updated-profile cylinder kit with a stock-compatible bolt pattern and designed to work with stock crankcases. Made in the USA.