Performance Machine 4 Piston Front Caliper for Harley Features: PM has created a new 4-piston billet aluminum caliper specifically engineered for 2008-19 Flhr, Flhrc, Flhx, Flht, Flhtc and Flhcu, 2014-19 XL, 2015-17 Flst,Fxsb, 2006-17 Vrscdx, Vrscd and Vrscaw utilizing the stock brake master cylinder These Harley models utilize a smaller 15mm bore in the brake master cylinder which requires the use of a smaller volume caliper This PM 4-piston caliper uses PM's proven caliper design standards to optimize the braking performance on these specific HD models Note: Image for display purposes only. Bracket may differ to fit your application