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front brake caliper ...?
Posted: Mon Dec 31, 2007 10:11 am
Author: bunnysZ
I am going to upgrade my bike from single to double caliper
the calipers i have differ slightly, in that the piston on one pair is solid , the other pair are empty, (as photo), the question is why the difference which is better/why and what models are they from.
Posted: Mon Dec 31, 2007 10:15 am
Author: Pigford
BunnyZ, could be a replacement aftermarket part, or someones just fitted it in
arse-about-face 
Posted: Tue Jan 01, 2008 5:23 pm
Author: DogsbolloxofZ1B
I agree, the one on the LHS is correct orientation.
Posted: Wed Jan 02, 2008 9:16 pm
Author: dr.rod
The right hand piston has a ceramic insert to prevent heat transfer from the brake pad to the brake fluid in the caliper. It was a development on later models to prevent brake fade.
In real life it makes not a jot of difference.
front brake caliper ...?
Posted: Wed Jan 09, 2008 4:03 pm
Author: scott
Hi bunnyz,
i agree with dr.rod....i went through the same process as you did when converting kz1000a2 to a twin disc setup. Also make sure the disc thickness is the same as the one you already have....the american one is thicker than the euro one.
Scott