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Old 03-05-2021, 01:20 AM   #1
Tobofsb
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2500HD rear shocks

Hello first time poster here - I have an '02 2500 HD, 8.1/Allison, 180,000+ miles, mostly stock except front leveling kit & 295/70/17's on American wheels. I went to replace the rear shocks today with a pair of Bilstien 5100's I bought a couple years ago when I refurbished the front suspension & added leveling kit.
When I pulled the original Bilstein F4-BE5-6082-H0 & compared to the new one, the old shock was roughly 1.5" longer extended. I checked the 5100 part #24-186742 is correct for this truck.
The original Bilstein part number has been updated to 24-060820. This shock has basically the same extended length as the new 5100.
So, should I use the new though somewhat shorter shock or find a longer one?
Sorry for the lengthy post, hope it makes sense.
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Old 03-05-2021, 11:51 AM   #2
hatzie
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Re: 2500HD rear shocks

Are they close or the same when compressed?
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1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
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And please let us know if and how your repairs were successful.
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Old 03-05-2021, 05:56 PM   #3
Tobofsb
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Re: 2500HD rear shocks

Unfortunately I didn't measure that before I reinstalled. I did measure the shock body on both as best as I could & they seemed essentially the same at just under 14".
I randomly looked at Gabriel shocks & those are about 3/4" longer fully extended than the Bilstein for the 2500HD, for what thats worth.
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Old 03-06-2021, 10:57 AM   #4
hatzie
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Re: 2500HD rear shocks

I think I'd worry more about bottoming the shock pistons from having "too long" shocks.
You'd need to be airborne or on a lift to get the shocks to full extension. You don't drive on a lift and I hope you don't go sailing through the air like the Dukes of Hazard.

I think that new ones being 1-1/2" shorter means they will not bottom as easily as the old shocks.
Maybe someone else will chime in with other thoughts but that's my $0.02.
__________________
1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
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Old 05-06-2021, 12:15 AM   #5
mikelom
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Re: 2500HD rear shocks

I ended up getting the Bilstein shocks 5100 because my rig is leveled. The yellow Bilstein HD's are shorter and designed for bone stock trucks.
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