Precision Braking: Performance Machine 4-Piston Differential-Bore Front Calipers

Upgrade your Harley-Davidson’s stopping power and aesthetic with the legendary Performance Machine (PM) 4-Piston Differential-Bore Calipers. Designed to replace the factory units on 2000–2017 Harley models, these calipers provide a firm, consistent lever feel and the high-performance braking confidence required for modern traffic and aggressive riding.
Differential-Bore Technology Explained

What sets PM calipers apart is the “Differential Bore” piston configuration:

Balanced Pressure: By using two different piston sizes within the same caliper, PM ensures that the leading edge of the brake pad doesn’t wear faster than the trailing edge. This results in perfectly even pad wear and a more linear, predictable braking response.

Increased Clamping Force: The four-piston design significantly increases the surface area and pressure applied to the rotor compared to stock 2-piston units, drastically reducing your stopping distance.

Billet Strength: Each caliper is CNC-machined from a solid block of 6061-T6 billet aluminum. This high-stiffness construction eliminates the “flex” found in cast factory calipers, translating every ounce of lever pressure directly to the rotor.

Iconic Performance Machine Style

Compact & Lightweight: PM calipers are engineered to be as light and low-profile as possible, reducing unsprung weight for better suspension response and a cleaner front-end look.

Finish Options: Available in Brilliant Chrome, Contrast Cut (black with machined accents), or Black Ops (a textured matte black) to perfectly match your bike’s custom theme.

Broad Fitment: Designed as a direct bolt-on for 2000–2017 Harley-Davidson models (excluding Springer models and certain V-Rod/Touring models with Brembo factory setups—please verify fitment).

Installation & Compatibility

Direct Replacement: Uses standard mounting hardware and is compatible with OEM or aftermarket master cylinders.

Brake Pad Included: Each caliper comes pre-loaded with high-friction brake pads designed for maximum bite and low noise.

Standard Hardware: Uses 3/8″−24 banjo bolts (sold separately).

Whether you are building a show-winning custom or a high-speed bagger, Performance Machine Calipers provide the elite level of control and style that has made them a staple in the V-Twin industry for decades.

Performance Machine Four-Piston Differential-Bore Front Calipers For Harley

High performance pads and stainless lines are only half measures. If you want to really upgrade the stopping power on your Harley replace your front caliper with a 4 Piston Differential Bore Caliper from Performance Machine. Trust the leading name in V-Twin brakes to handle the stopping duties on your machine.
Features:

Caliper is 4 piston differential bore with dual pad design
Differential bore pistons apply different forces at the leading and trailing edge of the pad to ensure long life
Designed for 11.5″ and 11.8″ disc applications
Requires 11/16″ master cylinder 501-058, 501-057 or 501-059 for optimal performance

Fitment Notes & Exceptions

Calipers listed for 2000-2003 Sportster models will fit 2004-Up models if used with a 9/16″ bore master cylinder
Will not fit Dyna, FXR, or Sportster models with wire spoke wheels

This Product Fits

Harley Davidson
Dyna Convertible FXDS 2000
Dyna Fat Bob FXDF 2008-2017
Dyna Low Rider FXDL/I 2000-2017
Dyna Low Rider S FXDLS 2016, 2017
Dyna Super Glide FXD/I 2000-2010
Dyna Super Glide Sport FXDX 2000-2005
Dyna Switchback FLD 2014, 2015, 2016
Dyna Wide Glide FXDWG/I 2000-2017
Electra Glide Classic FLHTC/I 2000-2007
Electra Glide Standard FLHT/I 2000-2007
Electra Glide Ultra Classic FLHTCU/I 2000-2007
Road Glide FLTR/I 2000-2007
Road King Classic FLHRC/I 2000-2007
Road King Custom FLHRS/I 2004, 2005, 2006, 2007
Road King FLHR/I 2000-2007
Softail Blackline FXS 2011, 2012, 2013
Softail Custom FXSTC/I 2007, 2008, 2009, 2010
Softail Deluxe FLSTN/I 2005-2014
Softail Deuce FXSTD/I 2000-2007
Softail Fat Boy FLSTF/I 2000-2014
Softail Fat Boy Lo FLSTFB 2010, 2011, 2012, 2013, 2014
Softail Heritage Classic FLSTC/I 2000-2014
Softail Heritage FLST/I 2006
Softail Night Train FXSTB/I 2000-2009
Softail Rocker C FXCWC 2008, 2009, 2010, 2011
Softail Rocker FXCW 2008, 2009, 2010, 2011
Softail Slim FLS 2012, 2013, 2014
Softail Standard FXST/I 2000-2012
Sportster Custom XL1200C 2000, 2001, 2002, 2003
Sportster Custom XL883C 2000, 2001, 2002, 2003
Sportster Hugger XLH883HUG 2000, 2001, 2002, 2003
Sportster Roadster XL883R 2002, 2003
Sportster XLH1200 2000, 2001, 2002, 2003
Sportster XLH883 2000, 2001, 2002, 2003
Street Glide FLHX/I 2006, 2007
V-Rod VRSCA 2002, 2003, 2004, 2005
V-Rod VRSCB 2004, 2005