S&S Precision Tappets. Fits Twin Cam 1999-2017, Sportster & Buell 2000-2021 & Milwaukee-Eight 2017up.

Description

Features & Benefits:-

* Reduced valve train noise from start up to shut down.

* Close tolerances for low leak down rates – fast pump up & superior high rpm performance.

* Low mass, bearing grade, silicon nitride check ball & lighter check ball spring – enhances fast pump up & quiet operation.

* Each Precision Lifter is hand assembled to exact tolerances & designed for quiet operation, rapid pump up & are made in the USA.

* Replaces OEM # 18538-99 & 18572-13