Performance Machine calipers (rears)
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Tourer
Joined: Oct 2004
Posts: 337
Likes: 5
From: Westchester NY
Performance Machine calipers (rears)
I'm planning on changing out the front caliper to a 6 piston PM.
Is PM's REAR 4 piston caliper that much better than HD's 4 piston that's already there? I'd rather not blow another $450+ on another caliper if the stock caliper with Lyndall racing pads all around works just as good.
Thanks
Rob
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Is PM's REAR 4 piston caliper that much better than HD's 4 piston that's already there? I'd rather not blow another $450+ on another caliper if the stock caliper with Lyndall racing pads all around works just as good.
Thanks
Rob
2005 nightrain
Carbed.
Stage I
Roland Sands Design VENTURI AIR CLEANER
Arlen Ness forward control extension kit.
V&H Straight shots
Radiant Side mount license plate light with LED cats-eye (discontinued)
Kuryakyn LED side rear marker/ turn lights
HD Diamond Back solo seat
Tourer
Joined: Sep 2008
Posts: 317
Likes: 0
From: Los Angeles
Rob, I pretty much changed my entire break system with PM parts. To be honest, I can't really tell the difference on performance when it comes to breaking. But if you are planning to change the front, you might as well match the rear, just for cosmetic purposes.
Intermediate
Joined: Jul 2007
Posts: 48
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From: Knoxville
My Custom only had a Dual Piston in the back. I replaced it with the PM 4 Piston, expecting big results. I was disappointed. I have bled it multiple times, using multiple techniques and it has gotten better, but still doesn't give me that WOW, what a difference feeling.
It is a very well made piece and the looks are outstanding.
I also replaced the rotor and pads with Lyndall pieces at the same time.
It is a very well made piece and the looks are outstanding.
I also replaced the rotor and pads with Lyndall pieces at the same time.
Road Master
Joined: Jan 2007
Posts: 1,226
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I wouldn't say the difference is dramatic however, there is a difference in braking performance.
Remember, you only have a single disk up front. A dual disk would be optimal.
If you're changing the front, change the rear as NixonWho suggested unless; you're running permanent saddlebags.
Remember, you only have a single disk up front. A dual disk would be optimal.
If you're changing the front, change the rear as NixonWho suggested unless; you're running permanent saddlebags.
Road Master
Joined: May 2007
Posts: 1,127
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From: Houston, TX
I don't know about you, but I can lock up my rear tire any time I want with the stock caliper. So I hardly see how rear braking could be improved unless I had much stickier tires. The only reason I could see for change would be cosmetic.
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For those of you who say you can lock up the rear wheel with the stock caliper, why would you change out the front. Stock HD caliper will lock up the front tire too. What it really has to do with is feel and the amount of effort it takes to get the breaks to respond. Compare sport bike breaks to HD breaks, they both do the same thing, in the same way, it just that the sport bike breaks take less input to make them work the same as HD's breaks. Its highly doubtful that changing calipers and pads and such will really make you stop that much shorter or faster, but it will require less hand squeeze or foot pressure to make the breaks work, and that is what is perceived as better breaks.
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Tourer
Joined: Dec 2007
Posts: 426
Likes: 0
From: On the road to nowhere, UK
I can't believe there are STILL people out there that don't use their rear brakes!!
Front braking takes about 75% of the combined weight of rider & bike, the rear taking the other 25% in braking situations.
If you can easily lock the rear brake, the braking force is more than the tyres grip on the road. More powerful brakes aren't needed, but riders often prefer different pedal pressure and multi piston calipers will assist here.
Sports bike brakes are extremely progressive in their application, meaning more or less pressure from the fingers than H-D brakes, and this something that we really would benefit from. If you upgrade the brakes, you'll start to highlight deficiencies further down the line, such as tyres etc.
And boys, its BRAKES nor BREAKS - it's not the Queen's English for nothing!!
:-)
Front braking takes about 75% of the combined weight of rider & bike, the rear taking the other 25% in braking situations.
If you can easily lock the rear brake, the braking force is more than the tyres grip on the road. More powerful brakes aren't needed, but riders often prefer different pedal pressure and multi piston calipers will assist here.
Sports bike brakes are extremely progressive in their application, meaning more or less pressure from the fingers than H-D brakes, and this something that we really would benefit from. If you upgrade the brakes, you'll start to highlight deficiencies further down the line, such as tyres etc.
And boys, its BRAKES nor BREAKS - it's not the Queen's English for nothing!!
:-)
Thread Starter
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Tourer
Joined: Oct 2004
Posts: 337
Likes: 5
From: Westchester NY
Thanks for all the imput. I still have stock HD tires right now so when it's time for new shoes I'll get a better all around tire set up. I'll probably get around to a PM rear caliper at some point but with Lydalls pads and better tires I'm sure I'll get great breaking compared to the stock HD set up
Rob
Rob
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