- Joined
- Dec 8, 2014
- Threads
- 45
- Messages
- 297
- Reaction score
- 212
- Location
- San Luis Obispo, CA
- Vehicle(s)
- 2002, 2006, 2015 Mustangs
- Thread starter
- #46
If you are using a stock shock or a stock OE dimension replacement you won't use any of the supplied spacers or reducers. If you are using an aftermarket shock that uses a 12mm shaft you will use the smaller ID reducer. The larger ID reducer is for the MangeRide shocks and the 12mm washer is for shocks such as Koni that has a longer threaded portion on the top of the shock.
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