S&S CYCLE Big Bore Cylinder Kit — Bore 4.250\", Stroke 4.375\", 124 cu in, Black – 18-19, 22-23 Softail, 17-19, 22-23 Touring

🏍️ Enhance performance with this Big Bore Cylinder Kit designed for outstanding results using stock cylinder heads.

• Easy installation — no need to bore or split existing cases; simply swap the cylinders unless otherwise noted.
• Cylinders are constructed from premium aluminum castings with cast-in iron liners.
• Kit includes cylinders, pistons, rings and gaskets (head, base and exhaust).
• Made in the USA.

Project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications. Not recommended for trike models.