Convert LH to RH
Convert LH to RH II
Convert LH to RH (video)
Included here are several ideas on caliper conversions. Click on the pic for full view.
It is recommended to use a 5/8 bore master cylinder for any dual disc setup. However, a 9/16 with steel braided lines may suffice. H1/2 optional dual disc was fitted with 5/8, while 9/16 was standard. The 5/8 cylinder is stamped "5/8" at the lever. The KZ650-C (dual disc) was also fitted with a 5/8, identical in appearance the the H cylinder. Rick Brett offers 5/8 master cylinders.
The H1 is fitted with a dual outlet junction block at the lower triple tree. The H2 & KH must have a dual block added or use a banjo bolt that will accommodate two lines.
Note that caliper mounting lugs on KH forks are wider apart than on H1/2, i.e., Z caliper won't fit KH, KZ caliper won't fit H1/2.
The LH H1/2 caliper mount plate can be machined to eliminate the lower boss and used with a spacer for a RH fit. The line will enter from the front unless adapters are used to reverse the line and bleeder. Use of the Z caliper eliminates this line problem.
The KZ 650 discs (at least some of them) are 5mm thick vs. 7.5mm on the H. They are a bolt on to the KH wheel (4 lug). This drastically reduces weight but always use new pads for safety as it is under recommended minimum thickness (5.5mm) for stock calipers.
Click pics above for larger images
Installation Video for adapter above
Adapter in pdf format
Adapter in DXF format
EX 500 caliper list
Additional pics and info can be found here.
KH500 forks, KH wheel, GPZ900 caliper, Z650 disc, GPZ900 m/cyl.
Bolts straight on, but the pads overlap the disc, so you need a small amount trimming off.