Inverted Front End
#1
02-20-2009, 01:34 PM
#2
02-20-2009, 07:12 PM
Outstanding HDF Member
Here's some info for you:
Ultima® 58mm Inverted Front End Assembly
These Inverted forks were designed to use 84/99 FXST style Wheels
Assemblies with a Single Disc. Optional Dual Disc hardware is sold separately
• Triple trees are machined for, but do not include, both internal fork stop kit #5-242 or 5-251 or External fork stops #27-189 found in the Midwest Motorcycle Supply catalog (Section 3).
• Std Length is OEM FXST length
First this front end is made for the older style frame with a 7 inch neck. If yours is bigger it won't work.
Second the forks are designed to work with a 3/4 inch front axle, yours is I believe 25mm. So your going to need either a new front wheel or you'll have to see if you can get new bearings for your wheel.
Third since this is made for the older style frames your going to have to go internal or figure out a way to make fork stops for it.
Fourth, since it is made to accept 84/99 FXST parts means you'll have to change the brakes and rotor also. I believe these use an 11.5" rotor, I'm not sure what size is on an 08 Rocker.
Make sure if you try this that you keep your trail in specs. I believe the Rocker has a substantial factory rake.
I am using this front end on my 87 FXR with a 32 degree factory rake and will be upgrading everything to match the 84/99 FXST. Good luck with your project and let me know if you have any more questions.
Ultima® 58mm Inverted Front End Assembly
These Inverted forks were designed to use 84/99 FXST style Wheels
Assemblies with a Single Disc. Optional Dual Disc hardware is sold separately
• Triple trees are machined for, but do not include, both internal fork stop kit #5-242 or 5-251 or External fork stops #27-189 found in the Midwest Motorcycle Supply catalog (Section 3).
• Std Length is OEM FXST length
First this front end is made for the older style frame with a 7 inch neck. If yours is bigger it won't work.
Second the forks are designed to work with a 3/4 inch front axle, yours is I believe 25mm. So your going to need either a new front wheel or you'll have to see if you can get new bearings for your wheel.
Third since this is made for the older style frames your going to have to go internal or figure out a way to make fork stops for it.
Fourth, since it is made to accept 84/99 FXST parts means you'll have to change the brakes and rotor also. I believe these use an 11.5" rotor, I'm not sure what size is on an 08 Rocker.
Make sure if you try this that you keep your trail in specs. I believe the Rocker has a substantial factory rake.
I am using this front end on my 87 FXR with a 32 degree factory rake and will be upgrading everything to match the 84/99 FXST. Good luck with your project and let me know if you have any more questions.
#3
02-20-2009, 07:18 PM
Outstanding HDF Member
A couple of other things I just thought of:
I was told that if your going to use an inverted front end you should keep the rake on the neck at no more than 32 degrees. The way he explained it was that since the seals on the forks are below the height of the tire it puts more of a load on the top side fork seals and can cause it to leak. I don't know if this is true but since I'm at 32 I'm going to leave it alone. He also said that inverted front ends work better the more vertical they are mounted.
Also this front end uses a 1 inch neck bolt(?) and bearings.
Again good luck.
I was told that if your going to use an inverted front end you should keep the rake on the neck at no more than 32 degrees. The way he explained it was that since the seals on the forks are below the height of the tire it puts more of a load on the top side fork seals and can cause it to leak. I don't know if this is true but since I'm at 32 I'm going to leave it alone. He also said that inverted front ends work better the more vertical they are mounted.
Also this front end uses a 1 inch neck bolt(?) and bearings.
Again good luck.
Last edited by MCSarge; 02-20-2009 at 07:21 PM.
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