S&S CYCLE 124" Power Package — 4.250" bore, 4.375" stroke – 17-24 Touring, 17-25 Trike, 17-23 CVO

This power package delivers big-bore performance in a bolt-on kit that requires no case machining. 🔧

Includes forged pistons, oil pump/cam plate, pushrods, tappets, tappet cuffs, S&S 550 camshaft and high-performance valve springs.

• Oil pump/cam plate precision machined from billet aluminum; passage plugs are removable for servicing.
• Independent scavenge sections for the flywheel cavity and camchest with debris screens and a camchest magnet to help stop debris from entering the oil pump.
• 44% flow increase on the supply side and 58% flow increase on the scavenge side; pressure relief valve is adjustable with the unit installed.

Pushrods are Quickee style and tappets are hand assembled to exacting tolerances for reduced valve train noise from start up to shut down and low leak down rates.

Tappet cuffs are billet aluminum with a hard-anodized black coating to provide stability in high-lift and high-rpm situations.

Camshaft: S&S 550 camshaft designed for big bore applications; valve springs work well with camshafts up to 0.605" lift.

Made in the USA 🇺🇸 — assembled components and quality-focused design for a reliable, high-performance upgrade.