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Upgrade your Master Cylinders
Words & pictures by Stig; with additional information supplied by forum members.

Whats the point in upgrading the calipers if you aren't going to make the most of their potential? Without the master cylinder to match, you'll be left with a wooden feeling lever; a little like there's air in the system. The items below are fitted as OEM parts to factory models and are readily available second hand.

The available options

 

Standard master cylinder with 14mm bore.

Can be found on any model that supports the Monobloc 1 piece construction calipers as well as the YZF1000R Thunderace.

Suitable for all non radial calipers.

Radial Master cylinder with 16mm bore.

Only found on later models with radial calipers.

Although the bore is greater, the more advanced design allows further improvement in braking feedback when compared to the 14mm version.

 

Be aware that If you're installing the above, both will need a mounting bracket to be fabricated to mount the reservior. In the case of the radial master cylinder, there may be clearance issues with the instrument cluster on full lock.
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