Bilstein 33-230429 | Suspension Shock Absorber

Part Number
B8 5125 - Shock Absorber
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Bilstein B8 5125 shock absorbers are designed for custom applications and are a perfect solution for vehicles that do not have a direct Bilstein fitment. These high gas pressure monotube shock absorbers are sold by various lengths and valve rates to accommodate a wide range of uses and custom fitments. All B8 5125 shock absorbers come equipped with industry standard 5/8 inch hour glass bushings and are available in either an eye/eye or stem/eye mount configuration. The shock absorbers feature a 46mm piston with self-adjusting deflective disc valving. Bilstein B8 5125 shock absorbers are the ideal choice for custom suspension builders.

BRAND: Bilstein


  • B8 5125 - Shock Absorber
  • No Applications
  • B8 5125 - Shock Absorber
  • Lifted Truck; B8 5125; 289mm Stroke
  • 46mm Monotube Shock Absorber
  • Shock Absorber


Adjustable DampingNon-Adjustable
Body DesignSmooth Body (Non-Coilover)
Body Diameter (ID)46mm
Boot IncludedBlack Bellows
California Proposition 65WARNING: Cancer & Reproductive Harm -
Collapsed Length (IN)17.11
Collapsed Length (IN) Rounded17
Collapsed Length (MM)434.5
Compression @0.52m/s840
Extended Length (IN)28.33
Extended Length (IN) Rounded28
Extended Length (MM)719.5
FinishZinc Plated
Internal DesignMonotube
Lower Mount TypeEye 5/8in
Mount TypeStem-to-Eye
Rebound @0.52m/s3695
SeriesB8 5125
TitleBilstein Shock Absorbers
Upper Mount TypeStem



Customer Questions
How often should shock absorbers be replaced?
Shock absorbers should generally be replaced every 50,000 miles or every 5-7 years
How to replace shock absorbers?
To replace shock absorbers, you need to remove the wheel and tire assembly, unbolt the old shock absorber, replace it with a new one, and tighten the bolts. Then, reinstall the wheel and tire, and test the new shocks.
Why do shock absorbers leak?
Shock absorbers can leak due to worn seals, damage to the piston or cylinder, or corrosion from exposure to moisture and road salt.
Can shock absorbers be replaced?
Yes, shock absorbers can be replaced when they start to wear out or fail.
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