Caliper Piston sizes
Cruiser
Joined: Mar 2017
Posts: 152
Likes: 41
From: Surrey, UK.
I am informed that the Nissin 4 piston caliper (with 2 pad retaining pins and HARLEY-DAVIDSON down the side) also uses 4 x 32 mm pistons.
I would think it likely that all H-D's 4 pot calipers use 32 mm pistons, but no confirmation on the rest yet.
I would think it likely that all H-D's 4 pot calipers use 32 mm pistons, but no confirmation on the rest yet.
Thread Starter
|
Road Master
Joined: Jul 2009
Posts: 849
Likes: 13
From: Santo Domingo, Dominican Republic
For anyone else reading this (in the future perhaps), the above is a terrible answer. Not only does it rather arrogantly dismiss the OP's question as unimportant, it is mostly WRONG. It is correct in that no-one makes oversize caliper pistons, but WRONG that the diameter is unimportant. The truth is that the diameter (and yes, the number of pistons too as it is the total area that defines the hydraulic advantage) is CRUCIAL to the operation of the brakes and knowing the diameter of all the pistons/bores involved can allow you to understand and figure out if any improvements can be made to suit yourself - as they often can.
Simply swapping components based on e.g. looks, or what works (in isolation) on other bikes and worst of all, the name of the manufacturer is a recipe for making your brakes worse. If you don't understand how they work, maybe you shouldn't be messing with your brakes in the first place, but if truly ignorant about all this, DEFINITELY don't give out incorrect advice on a public forum.
I am also searching for this information, i.e. the diameters of the pistons/bores in the main caliper types H-D have used. From single piston sliding caliper type on '80s/'90s models, to the 4 piston Nissins on I think mainly later Touring models and the latest Brembos. I cannot find this information anywhere, so if anyone can help, it would be much appreciated, certainly by me and probably the OP as well.
Simply swapping components based on e.g. looks, or what works (in isolation) on other bikes and worst of all, the name of the manufacturer is a recipe for making your brakes worse. If you don't understand how they work, maybe you shouldn't be messing with your brakes in the first place, but if truly ignorant about all this, DEFINITELY don't give out incorrect advice on a public forum.
I am also searching for this information, i.e. the diameters of the pistons/bores in the main caliper types H-D have used. From single piston sliding caliper type on '80s/'90s models, to the 4 piston Nissins on I think mainly later Touring models and the latest Brembos. I cannot find this information anywhere, so if anyone can help, it would be much appreciated, certainly by me and probably the OP as well.
Thread
Thread Starter
Forum
Replies
Last Post
being cheap- other hd family calipers that match the stock 2013 fxd bolt and rotor coverage pattern?
cvaria
Dyna Glide Models
3
Mar 26, 2016 07:55 AM
Super38
Frame/Suspension/Front End/Brakes
0
Dec 7, 2015 06:25 AM
FL-kruzen
Want To Buy Motorcycles/Parts/Accessories
0
Nov 15, 2012 05:29 PM
