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All ISR Master Cylinders are CNC machined from blocks of Tufram coated aluminum alloy and then clear
coated for durability.  They require
M10x1.25 Banjo Bolts and include pads.  All Masters are completely
rebuildable and spare parts are available.  This is only a select few Items of all that ISR offers, Please
contact us for more information about the rest of their offerings including parts for Harley's and BMW's
and for Spare Parts
ISR Racing Radial Master Cylinder 22-014

This fully adjustable radial master cylinder, intended for racing, is the
very latest addition to our range of master cylinders. It has been race
proven with success by the Swedish 250 hero Fredrik Watz.

The 21-014 series radial cylinder offers leverage and grip adjustment.
Adjustment is made with easy access manual controls, no tools
needed. It can even be adjusted while riding the bike.

It is constructed using different "modules", allowing for various parts
to be swapped after crash damage without having to swap/bleed the
entire system.

Comes in 17.5mm and 15.87mm sizes
Select Fitment
Select Piston Size
ISR Radial Master Cylinder w/ Built in Reservoir 22-012

Just like the 22-014, the -012 has a built in Reservoir!  An excellent
choice for Streetfighter and naked bikes!

The 21-012 series radial cylinder offers leverage and grip adjustment.
Adjustment is made with easy access manual controls, no tools
needed. It can even be adjusted while riding the bike.

It is constructed using different "modules", allowing for various parts
to be swapped after crash damage without having to swap/bleed the
entire system.

Comes in 17.5mm and 15.87mm sizes
Select Fitment
Select Piston Size
ISR Rear Master Cylinder 22-010

The 21-010 rear master cylinder is intended for sports and racing
bikes.

There are three bodies and two reservoir types to choose from. The
reservoir can either be made as an integrated unit or with a plastic
tube acting as reservoir. The bodies can have the outlet inline with
the M/C bore, or in a 90 degree angle from the cylinder bore.

This master cylinder is suitable for installations with two piston
calipers, up to 34 mm diameter pistons, or four piston calipers, up to
25 mm diameter pistons.
Select Style
  • 21-010-OA 90 degree outlet
  • 21-010-OB 90 degree outlet
  • 21-010-OC Straight outlet
  • 21-010-OD Straight outlet
  • 21-010-OE Integrated reservoir (11 cm3)
ISR Cable Clutch Lever and Perch 71-004

Universal clutch lever assembly for 22 mm diameter handlebars.

For the moment we only have this lever for 3.5 mm cables. Please,
get in contact with us if you need this lever for other clutch cable
sizes.

It can be ordered with adjustable grip reach as well as the standard
reach.
Select Style
ISR Handlebar Clamp Switch Assemblies

Clean up your handlebars with these switch assemblies. For use
with 22mm Handlebars.  Replaces the standard ISR handlebar
clamps with these versions with built in electronic buttons.

Max current for slide buttons are 6A.

Max current for push buttons are 25mA.
  • 73-106-OA - One Slide and two Push buttons, RH
  • 73-106-OA - One Slide and two Push buttons, LH
  • 73-107-OA - One Slide and one Push button
  • 73-108-OA - Two Push buttons
  • 73-109-OA - One Slide button
  • 73-110-OA - One Slide button
Select Style