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Bumpstops...CUT? or NOT?

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Old 05-21-10, 10:05 AM
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msgs350
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Question Bumpstops...CUT? or NOT?

Hey guys..can you give me some input and maybe some pics. I'm going to lower my 350 AWD on DF210s. The instructions say to cut the bump stops 15-25mm. What have you guys done or suggest? i don't want to be slammed..but lower than nf210. Does the bump stop affect ride quality/bounce? Thanks!!!
Old 05-21-10, 10:19 AM
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IXI187IXI
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yes they should be cut. when you lower a car with springs, you are shortening the travel of the strut. theres less room for the strut to compress when you hit a bump. without cutting the bump stop it gives you even less room.
Old 05-21-10, 01:23 PM
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TWong350
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Originally Posted by IXI187IXI
yes they should be cut. when you lower a car with springs, you are shortening the travel of the strut. theres less room for the strut to compress when you hit a bump. without cutting the bump stop it gives you even less room.
Very true and that's the reason why they recommend cutting them. But, I elected not to cut them and hit the bumpstop if I hit a large bump so that I can protect my stock shocks. These stock shots are meant to compress that much. It was my way of protecting them.

Now on my coilovers, I did cut them.

Just my $.02.
Old 05-21-10, 06:03 PM
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msgs350
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Originally Posted by Turbo_LX
Your suspension would be sitting on the bumpstop making it for harsh ride... And the fact that the spring won't fully lower to the factory specification.
Are you referring to cutting or not cutting? I'm so confused....
Old 05-24-10, 06:38 AM
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if you dont cut them
Old 05-24-10, 07:57 AM
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Originally Posted by Turbo_LX
Your suspension would be sitting on the bumpstop making it for harsh ride... And the fact that the spring won't fully lower to the factory specification.
Negative. The car only hits the bump stops at full compression. Not cutting them will cause your car to hit the bump stops earlier due to less travel but will save your shocks.
Old 05-24-10, 08:24 AM
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Originally Posted by TWong1200
Negative. The car only hits the bump stops at full compression. Not cutting them will cause your car to hit the bump stops earlier due to less travel but will save your shocks.
it all depends. cutting them wont hurt the struts. the only thing that will hurt them is if you hit a big enough bump and the strut bottoms out.
Old 05-28-10, 04:57 AM
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I ended up cutting them.....and sad to say (also weird) my AWD vibrates at stops!
Old 06-23-10, 07:15 PM
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I did not cut mine and i am with the DF's.. ride is as good as stock. no problems and no harsh ride
Old 06-24-10, 10:38 PM
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Originally Posted by SRGS300
I did not cut mine and i am with the DF's.. ride is as good as stock. no problems and no harsh ride
Do you have RWD or AWD? Mine is a bit bouncy.
Old 06-25-10, 04:43 AM
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RWD and no bounce at all
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