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LS400 Brake Swap for stock IS300 Front Brakes

6K views 4 replies 3 participants last post by  wingnut 
#1 ·
Soooooooooo, got a buddy selling an IS300 with an LMS/LMW LS400 front brake conversion.
Hes willing to swap out my brakes, put them on his car, and put the big brakes on my car for $400 (everything and work).

Will I notice a reasonable difference? Is it common to do just the front?

Any point in doing the rears at some point?
 
#4 ·
The RCA's are for clearance on the brake caliper, see this:


And the RCA's will actually lower the car, so if the RCA is 20mm thick - your car is lowered 20mm once they're installed. Read up on Figs site.
 
#5 · (Edited)
The RCA's are for clearance on the brake caliper, see this:


And the RCA's will actually lower the car, so if the RCA is 20mm thick - your car is lowered 20mm once they're installed. Read up on Figs site.
They clear with just the 15mm spacers - stock wheels.
 
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