Harley Davidson 21900164 Screamin' Eagle High Compression Pistons screaming KIT,PSTN,4.310,BORE,4.625,STRK,STD size-uk8 Its semi-rigid structure is perfectly

Its semi-rigid structure is perfectly shaped to fit your bike's frame

Fits '14-later Touring models (except CVO unless originally equipped with HD-Prodigy wheels and '24-later FLHX and FLTRX)

Fits '09-later Touring models

2" in width

Fits '19-later FLRT

Harley Davidson 21900164 Screamin' Eagle High Compression Pistons screaming KIT,PSTN,4.310,BORE,4.625,STRK,STD size-uk8 Its semi-rigid structure is perfectlyKIT,PSTN,4. 310,BORE,4. 625,STRK,STD Screaming eagle Screamin' Eagle High Compression Pistons 135 CI 21900164 High compression pistons 4. 310" bore. Forged flat top pistons Piston design and rings engineered to withstand increased combustion forces for outstanding durability Updated ring package with 1mm compression and scraper rings Gas ported to assist with ring sealing while allowing for low tension and reduced friction Replacement pistons for '21