KB Performance Hypereutectic Piston Kit 3.498" +0.040" 9.6:1 CR 80" Evolution Big Twin - KB305.040 For Harley 1984-1999 Brand_D&D Exhaust 2023-2025 Harley-Davidson Softail Breakout FXBR

2023-2025 Harley-Davidson Softail Breakout FXBR 2018-2024 Harley-Davidson Softail Fat Boy 114 FLFBS 2018-2019

Direct plug-in four-gauge digital instrumentation system

Designed to give you a lowered front end and superior ride performance

Fits T-111

KB Performance Hypereutectic Piston Kit 3.498" +0.040" 9.6:1 CR 80" Evolution Big Twin - KB305.040 For Harley 1984-1999 Brand_D&D Exhaust 2023-2025 Harley-Davidson Softail Breakout FXBRFeatures Manufactured from high strength, T 5, heat treated, 390 hypereutectic aluminum alloy Allow a tighter fit and longer piston and ring life Diamond machined pistons are held to plus or minus one gram weight and less than one half thousandth inch (. 0005") tolerances from piston to piston Each kit contains two pistons, pins, spiral lock pin clips and Hastings moly rings Replacement piston rings and pin lock rings available separately KB pistons