Performance Machine 6-piston caliper on Super Glide Custom
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Road Captain
Joined: Jun 2007
Posts: 632
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Performance Machine 6-piston caliper on Super Glide Custom
I just fitted my new 09 Super Glide Custom with a PM 6-piston caliper. The stock, single rotor brake worked okay but I was curious about improving on it.
I did not want to add a second disk because I like the look of the clean right side of the wheel. Originally, I looked into fitting the 6-piston caliper AND a 13-inch disk. PM says you cannot do that on the Dyna but that you can fit the standard 6-piston caliper on the stock disk. I still cannot understand why the 13-inch caliper will not work but they seem emphatic about it.
I bought and installed the pretty 6-piston contrast-cut unit on the SGlide. Verdict ? It's good but not that much better than the stock caliper. The PM is expensive and I am not sure it's worth the cost as far as increased braking performance. I think I can notice an improvement but it is not much.
I notice that the PM pads are not as wide on the sweep area of the disk. There is about a quarter of an inch of extra sweep on the disk from the stock pads. The PM pads seem to have a longer sweep area, however.
I kept the stock brake master cylinder. The feel is about the same as with the stock set-up. I'm afraid that, if I went to a smaller piston in the MC, it would feel mushy and, if I went to a larger piston, it would feel wooden and less-powerful.
I may improvise later and fit a 13-inch rotor. All in all, the 6-piston caliper alone is not a significant improvement for me. It DOES look good, though !
I did not want to add a second disk because I like the look of the clean right side of the wheel. Originally, I looked into fitting the 6-piston caliper AND a 13-inch disk. PM says you cannot do that on the Dyna but that you can fit the standard 6-piston caliper on the stock disk. I still cannot understand why the 13-inch caliper will not work but they seem emphatic about it.
I bought and installed the pretty 6-piston contrast-cut unit on the SGlide. Verdict ? It's good but not that much better than the stock caliper. The PM is expensive and I am not sure it's worth the cost as far as increased braking performance. I think I can notice an improvement but it is not much.
I notice that the PM pads are not as wide on the sweep area of the disk. There is about a quarter of an inch of extra sweep on the disk from the stock pads. The PM pads seem to have a longer sweep area, however.
I kept the stock brake master cylinder. The feel is about the same as with the stock set-up. I'm afraid that, if I went to a smaller piston in the MC, it would feel mushy and, if I went to a larger piston, it would feel wooden and less-powerful.
I may improvise later and fit a 13-inch rotor. All in all, the 6-piston caliper alone is not a significant improvement for me. It DOES look good, though !
Stellar HDF Member
Joined: Jul 2007
Posts: 2,047
Likes: 72
From: Northwest Louisiana
I talked to a tech at PM about the 13 inch rotors and apparently Harley changed the mounting point of the caliper when they went to the 300mm disc.
He said Todd Silicato (www.toddscycle.com 1-714-901-4516) has fabricated a relocation bracket for the 6 piston caliper and 13" disc on the late model Dynas.
He said Todd Silicato (www.toddscycle.com 1-714-901-4516) has fabricated a relocation bracket for the 6 piston caliper and 13" disc on the late model Dynas.
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