Description

Features & Benefits:-

* Use with performance exhaust, air cleaner, S&S 585 bolt-in cams & EFI tune to produce massive horsepower gains.

Tech Tips:-

* Will Not Fit Twin Cooled Models.

* Pistons measure 3.9975in. when new.

* .0025in. Clearance with stock 4.00in. bore.

* Pistons may be slightly more noisy than stock.

* Replacement Ring Set # SS940-0040.

* Follow Ring End Gap & Piston to Cylinder Clearances as per the supplied Manufacturers Instructio