I noticed on a Trike model that they had what looked like a 6 piston calibers on them. A search of it's specs shows that they are indeed 6 pistons. Does anyone know if they would bolt up to a FLH front forks ?

Front: 6-piston fixed front with (4) 31.75 mm front pistons and (2) 25.4 mm linked rear pistons
Rear: 31.75 mm 1-piston floating
Parking: Foot actuated dual parking brake

 

Those calipers actually have 2 separate brake line to each caliper. The 2 center pistons are connected to the REAR master cylinder and the remaining 4 pistons are connected to the FRONT master cylinder. I don't know if they would bolt up but you would need to come up with a way of activating all 6 pistons.

 

Well just tubing them together ought to work as far as activating all pistons but if they are some oddball setup then I wouldn't want to use them for the app I'm looking at... a Hotrodded Dyna.

Thanks

 

This is a strange question. You can lock up any Harley with 4 piston caliper.

Not sure how a 6 piston caliper helps you to stop. Threshold braking is threshold braking.

But what the hell do I know?

 

Looks like the third set of Pistons are designed to engage the front brake system (part of it) when the rear is engaged. The front brake lever only actuates 4 Pistons just like on all the touring bikes

 

My understanding is that a pair of the front pistons are linked with the rear, operating together, while the other pistons are indeed operated by the front brake. I also have looked at them to use as front only calipers, but passed that idea over.

As for 6-pistons or not I have been using a pair with 13" floating rotors for many years - when working well they are fine - you just can't have too much of a good thing! Control is all......

 

6 piston PMs may be an easier option.