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150 on a Fattie

 

 

This mod pertains to FLSTF model years 2000, 2001, 2002

A popular mod for Fatboys prior to 2003 is to retrofit  to a 150 size rear tire, replacing the stock size 130.

Yes you can fit one in without all this, but these simple mods will make it fit better and center things up, without having the tire slammed all the way to the extreme left. Basically what the intent of this mod is to install a slightly longer spacer, remove a small amount of material from the caliper, which in turn shifts-moves the wheel to the right more towards the center of the fender.

Part needed:

HD Fat Tire Spacer, part # 41519-00

Part for machining: Rear brake caliper

Brake fluid

Russell SpeedBleeders (optional, but well worth the minimal cost)

 

Take the rear caliper completely off, and have it machined professionally to the tolerances in the picture:

 
Make measurement as to where the fender strut bolt exits the nut inside the fender well, then take out the fender strut bolts out and cut them off at the nut. There cannot be any additional threads protruding beyond the nut in the fender well.

Put everything back together, using the new spacer, and torque to factory rated specs that are listed in the service manual. Bleed brakes / add fluid as described per the service manual.

You may have to slightly trim the black plastic fender well guard (plastic fender extension), to keep the belt from getting too close.

 
   

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This site was last updated 12/20/04