rear end clunk big bear motor mounts

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Nov 8, 2017 | 03:51 PM

paulvs

Thread Starter

Stage II

Joined: Nov 2017

Posts: 2

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From: here

rear end clunk big bear motor mounts

2013 FXDX Fatbob with front and rear big bear motor mounts, rear end clunks over slow bumps, anyone else have this issue?

Nov 8, 2017 | 04:43 PM

F86

Outstanding HDF Member

Joined: Mar 2015

Posts: 2,840

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From: Philly Suburbs

For better or worse, I don't think many people have the "issue" of having front and rear BBC motor mounts...

Sorry, I realize I'm not being helpful... Did the issue start at the same time as the mount installation? I'm not super familiar with the BBC rear mount, but I'm under the impression that it's stiffer overall than the OEM unit... If so, something else may have started taking up some of the damping duty abandoned by the mount... Also, is the engine/tranny/swingarm properly aligned in the frame? I don't mean to be insulting, but are you sure that everything is tightened and torqued properly?

This isn't really the "rear end," but it's not uncommon that the top of the side stand can start clunking against the case if the relationship lbetween engine and frame is altered at all (as in changing mounts)...

Nov 8, 2017 | 04:58 PM

misfitJason

Seasoned HDF Member

Joined: Dec 2010

Posts: 6,849

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From: Florida

Generally two things.

1. Is the kickstand pin hitting and is the right direction

2. Was an alignment (motor) done after the mounts were in. If itâ€™s the mount contacting something (motor/trans to rear frame) do another one

Nov 8, 2017 | 06:54 PM

loopie

Road Captain

Joined: Apr 2013

Posts: 583

Likes: 4

From: australia

do a search on the company, most customers off them experience rear end problems ,,, REAR end (***) problems after being *** raped by them ,,, hhhaaaa