ISR Brakes from Sweden are very high quality and rugged systems designed for top racers who demand the best performance and durability from their brake systems.  Race proven, all ISR brake systems are CNC machined from aerospace quality billet aluminum and then finished with a clear anodized coating for the ultimate in corrosion protection.  The 4 piston CNC machined calipers from ISR have the highest strength to weight ratio of any aftermarket caliper today.  This kit fits Harley-Davidson motorcycles with rear 89mm centers and various size rotors, sold each.


The 22-025 series of billet calipers are designed as a direct replacement for Harley-Davidson motorcycles.  Featuring a rounded design that offers a smooth and classic appearance, the 4 piston axial mount billet calipers from ISR will seriously enhance your braking performance.  The larger effective radius of the friction area allows a more even distribution of the braking heat and minimizes rotor warpage.  The lightweight design lowers unsprung weight while still maintaining high rigidity delivering and exceptional feel with unmatched braking performance.  The four individual pads allow more edges to bite into the disc resulting in an extremely high friction characteristics.  Each pad has it's own machined pocket that allows for pad retention in the event of pad pin failure, a feature designed as a direct result of Swedish Superbike racing involvement.


The caliper pistons are machined from an aluminum alloy for light weight and are then plated with a very hard Tufram coating designed to minimize wear from long piston life under the most demanding conditions. 


The rotor kit is a direct replacement for Harley-Davidson front and rear calipers with  6.7" (170mm) to 13" (330mm) rotors.  The 22-032-OG and OH billet calipers are perfect for standard Harley-Davidson motorcycles with alloy or spoke wheels.  Also perfect for custom applications.  These calipers have the following specifications:

• 34mm x4 pistons
  
• Pistons are made from a Tufram plated aluminum alloy
  
• Pad area is 25.6 square centimeters
• Swept height of rotor is 35mm
• 6.7" (170mm) to 13" (330mm) rotor sizes
  
• Rotor thicknesses 4.5mm-6.0mm
• Banjo bolt size M10 x 1.25mm
• 89mm mounting centers
  
• 0.91kg (2.00lb) weight
  
• Clear anodized
• Black finish available upon request
  

Calipers are sold as each or as a set.  There is an option above to select your side or you can select the set.  As always please check the dimensions and measure carefully, verify the calipers will fit before purchasing.  The critical dimensions are listed below, please inquire if you are unsure. 

PDF Downloads

ISR 22-025-OG/OH HD catalog pages