DamonB

FYI Mazda Motorsports carries all of the stiffer Mazdaspeed rubber bushings for the FD. Just go to the catalog page and enter "F128" as all the stiffer Mazdaspeed bushings begin with that number.

John Magnuson

Yes, I just bought a pair yesterday through the mazdaspeed website after reading this post. They arrived today.

If you need these bushings you can pay me and then I'll get them for your through Mazda Comp. I don't want to do this for a LOT of people as that's not really how I'm supposed to use the account. But I'll do it for a couple PM me if interested. It might actually end up being cheaper for you to go through corksport anyway cause if you get them through my account you'll have to pay shipping twice and CA sales tax.

adam c

iTrader: (2)

Those who abuse their Mazda Motorsports membership privileges risk ruining the program for the rest of us. Don't do it!

John Magnuson

Yeah... you're probably right. Like I said I'd maybe do it for one or two people if they're desperate to get them fast. It's not going to save them any money after tax and double shipping anyway. Nobody has taken me up on it so I think I agree with you and will recind my offer for now.

scotty305

iTrader: (2)

the only requirements for Mazdaspeed membership are two race results per year. Autocrosses are an easy way to get this.


Damon, do you have or know of a list of all the available Mazdaspeed parts? I tried that "F128" trick for the rear pillow ball bushings, FD01-26-220 , but it didn't work. I'm assuming there isn't a competition part available to replace these? (sorry to threadjack)

-s-

Shad Laws

The rear pillowballs can't get any stiffer - they are already solid metal. Only the rubber-infused bushings could get stiffer.

Take care,
Shad

scotty305

iTrader: (2)

OK thanks for clearing that up.

-s-

John Magnuson

Well... true Mazdaspeed does not have a stronger replacement for the stock pillowballs.

The pillowballs actually aren't sold metal... they actually rest inside a nylon housing. Not to say that they're not high performance...

You sould be able to order the mazdaspeed bushings from any dealer if you just provide them with part number. They have them in stock at the Fontana, CA mazda warehouse. You shouldn't have to wait for them to come from Japan or anything.

For those of you interested here are all the mazdaspeed bushing and mounts that are available and their part numbers:

F128-34-480 C BUSHING, FRONT UPPER CONTROL ARM (4)
Notes: 40 STIFFER THAN STOCK. FRONT UPPER CONTROL ARM, INNER BUSHING.

F128-34-471 C BUSHING, LOWER ARM SUPPORT (4)
Notes: 40 STIFFER THAN STOCK. THESE LOOK LIKE RUBBER DONUTS. THEY HELP SUPPORT THE FRONT AND REAR LOWER CONTROL ARM BUSHINGS.

F128-34-470 C BUSHING, LOWER CONTROL ARM (2)
Notes: 40 STIFFER THAN STOCK. FRONT LOWER CONTROL ARM, REAR BUSHING.

F128-34-460 C BUSHING, LOWER CONTROL ARM (2)
Notes: 40 STIFFER THAN STOCK. FRONT LOWER CONTROL ARM, FRONT BUSHING.

F128-28-460 C BUSHING, LOWER CONTROL ARM (REAR) (2)
Notes: 40 STIFFER THAN STOCK. LOWER CONTROL ARM, INNER BUSHING.

F128-28-42Y C BUSHING, TOE CONTROL (RR) (2)
Notes: 40 STIFFER THAN STOCK. INNER TOE CONTROL BUSHING ON TOE LINK.

F128-28-52Y C BUSHING, TRAILING LINK(RR) (2)
Notes: 40 STIFFER THAN STOCK. BUSHING AT LEADING END OF REAR TRAILING ARM.

F128-28-8C0 C BUSHING, UPPER CONTROL ARM (REAR) (4)
Notes: 40 STIFFER THAN STOCK. REAR UPPER CONTROL ARM, INNER BUSHINGS.

F128-28-890 C MOUNT, DIFFERENTIAL (2)
Notes: 40 STIFFER THAN STOCK.

F128-39-050A C MOUNT, LEFT ENGINE (1)
Notes: 40 STIFFER THAN STOCK. PROVIDES MORE RIGIDITY AND BETTER THROTTLE RESPONSE.

F128-39-040 C MOUNT, RIGHT ENGINE (1)
Notes: 40 STIFFER THAN STOCK. PROVIDES MORE RIGIDITY AND BETTER THROTTLE RESPONSE.

F128-28-380 C MOUNT, UPPER SHOCK (F-R) (4)
Notes: FRONT AND REAR. THIS IS MADE OF A 40 STIFFER RUBBER THAN STOCK. THIS IS NOT THE BUMPER BOUND WITH THE THREE BOLTS.

jimlab

Well, it's good to see that I wasn't wasting all of my time...

Not according to the illustrations in the service highlights manual (just checked), and I'll be more than happy to machine one open for inspection this weekend if anyone cares strongly about it.

potatochobit

iTrader: (1)

is there any advantage to replace the whole trailing arm instead of just these bushings?

John Magnuson

I don't really care strongly about it but just take one that is kinda worn out and pull the joint all the way to the side. You'll see some nice white nylon in there that the ball rotates on. I don't think this really makes it much different than a traditional all metal heim joint. I imagine mazda did it to maybe reduce vibration a bit? Or maybe it makes for better wear characteristics? As much as we all complain about how the pillow ***** are short lived they still last long than the heim joints you can buy for racing applications.

adam c

iTrader: (2)

The arm is a piece of metal. There is no reason to replace it unless it has been damaged. Replaceing an undamaged arm would be a waste.

John Magnuson

Some people replace then because aftermarket ones are just a little bit thinner so you can fit slightly larger tires.

jimlab

And they use spacers to offset the front mounting point inward to gain more clearance.

jimlab

In the two old ones that I inspected last night, there was no nylon liner that I saw. That may be a "new" addition, but since they come pre-packed with grease, I wasn't able to inspect the last new ones I bought closely before installing them.