Lifting or leveling a 1999-2026 GMC Sierra 2500 HD (GMT800/GMT900/T1XX) changes what the dampers have to do. The Bilstein B8 shocks are built for that taller stance and stay composed on rough ground.
This is a direct-fit part. It mounts in the original locations with the original hardware, so nothing needs modifying, and it carries Bilstein”s limited lifetime warranty.
Features
46mm monotube design ensures consistent, fade-free performance in all conditions
Self-adjusting deflective disc valving reacts immediately to surface changes enabling maximum vehicle control
Remote reservoir increases shock oil capacity for greater heat dissipation
Specifications
| Part Number |
25-311846 |
| Part Name |
Shock Absorber |
| UPC |
651860911878 |
| Vehicle |
1999-2026 GMC Sierra 2500 HD |
| Chassis Code |
GMT800/GMT900/T1XX |
| Drivetrain |
RWD/4WD |
| Adjustable Damping |
Non-Adjustable |
| Billet Reservoir Clamp Included |
Yes |
| Body Design |
Smooth Body (Non-Coilover) |
| Boot Included |
No |
| Collapsed Length |
18.14 in. (460.8mm) |
| Extended Length |
31.28 in. (794.5mm) |
| Finish |
Zinc Plated |
| Internal Design |
Monotube |
| Lower Mount Type |
Eye 14.4mm |
| Piston Diameter |
46mm |
| Vehicle Placement |
Rear |
| Reservoir |
Yes |
| Segment |
Light Truck |
| Series |
B8 5160 |
| Shaft Diameter |
14mm |
| Spring Seat Included |
No |
| Stroke/Travel Length |
13.14 in. (333.8mm) |
| Upper Mount Type |
Eye 14.4mm |
| Notes |
Fits Vehicles With 3-4″” Rear Lift |
Vehicle Fitment
1999 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2000 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2001 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2002 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2003 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2004 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2005 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2006 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2007 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2008 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2009 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2010 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2011 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2012 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2013 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2014 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2015 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2016 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2017 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2018 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2019 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2020 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2021 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2022 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2023 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2024 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2025 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
2026 GMC Sierra 2500 HD RWD/4WD (GMT800/GMT900/T1XX)
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