Bilstein B8 6112 0-1.2″ Front Assembled Coilovers with B8 5160 RR 0-1″ Rear Lift Reservoir Shocks for 2019-2025 Chevy/GMC Sierra Silverado 1500 Trail Boss/AT4 2WD/4WD

Description
Bilstein B8 6112 0-1.2″ Front Assembled Coilovers with B8 5160 RR 0-1″ Rear Lift Reservoir Shocks for 2019-2025 Chevy/GMC Sierra Silverado 1500 Trail Boss/AT4 2WD/4WD

Bilstein B8 6112 0-1.2″ Front Assembled Coilovers with B8 5160 RR 0-1″ Rear Lift Reservoir Shocks for 2019, 2020, 2021, 2022, 2024, 2025 Chevy/GMC Silverado Sierra 1500 Trail Boss/AT4 2WD/4WD
Part: 6112GM19K-ASBS

Leveling kit built around true Bilstein 6112 coilovers

This package combines Bilstein B8 6112 front coilovers with B8 5160 remote reservoir rear shocks specifically for
2019, 2020, 2021, 2022, 2024, 2025 Chevy Silverado 1500 Trail Boss and GMC Sierra 1500 AT4 (2WD and 4WD).
The 6112 struts use Bilstein’s own large diameter coil springs, and for this product we assemble the 6112 units with new top mounts, bump stops, and dust boots so they are ready to bolt in.

Fitment note: Fits Trail Boss and AT4 models only. Does not fit non Trail Boss Silverado or non AT4 Sierra trims.

What is included

• (2) Front Bilstein B8 6112 0-1.2″ assembled coilovers
  • Shock part number: 47-309524
  • Includes Bilstein 6112 coil springs from the factory kit
  • Pre-assembled by us with new top mounts, bump stops, and dust boot covers
  • 60 mm monotube bodies with large digressive pistons
  • Snap ring adjustable for multiple ride height settings
• (2) Rear Bilstein B8 5160 RR 0-1″ lift remote reservoir shocks
  • Shock part number: 25-316964
  • Designed for stock to 1″ rear lift
  • Remote reservoirs with included billet clamps
  • 46 mm smooth body monotube construction

B8 6112 front coilovers – design and lift settings

Bilstein B8 6112 leveling systems are built around a 60 mm monotube strut and Bilstein coil spring.
Multiple snap ring grooves let you move the lower spring seat and fine tune front ride height while keeping OE style geometry and a controlled ride.

Typical lift heights for 5.3L V8 and 3.0L Diesel, 4×4, Crew/Double Cab:

*Lift values are typical and can vary slightly based on vehicle configuration, accessories, and actual curb weight.

• Body diameter: 60 mm monotube for better heat capacity and damping control
• Valving: large digressive piston tuned for off road control with a comfortable on road ride
• Springs: Bilstein cold wound coil springs included in the 6112 kit
• Seats: billet aluminum spring seats, snap ring adjustable
• Assembly: we install new top mounts, bump stops, and boot covers so no spring compressor is needed

Download Bilstein 6112 installation instructions

B8 5160 RR 0-1″ rear remote reservoir shocks – 25-316964

• Collapsed length: 17.40″ (442.0 mm)
• Extended length: 27.61″ (701.2 mm)
• Finish: zinc plated
• Reservoir: yes, remote reservoir with hose
• Billet reservoir clamp included: yes
• Body design: smooth body, non coilover
• Body diameter: 46 mm monotube
• Spring seat included: no (works with the factory rear spring setup)
• Adjustable damping: non adjustable, pre tuned valving

The 5160 reservoirs increase oil volume and cooling area, giving you much better fade resistance on washboard roads, towing, or extended off road runs compared to standard shocks.

Fitment

• Vehicles: Chevy Silverado 1500 Trail Boss, GMC Sierra 1500 AT4
• Model years: 2019, 2020, 2021, 2022, 2024, 2025
• Drive: 2WD and 4WD
• Front lift range: approximately 0-1.2″ depending on circlip position
• Rear lift range: compatible with stock to 1″ rear lift
• Does not fit: non Trail Boss Silverado 1500, non AT4 Sierra 1500, or trims with different front suspension geometry

Ride and installation notes

• Front coilovers arrive fully assembled with Bilstein springs, top mounts, bump stops, and boots.
• Direct bolt on installation using factory style mounting locations.
• A professional alignment is strongly recommended after changing front ride height or installing coilovers.
• Remote reservoirs should be mounted with the included billet clamps, away from moving suspension parts and exhaust heat.

If you want your Trail Boss or AT4 to sit a touch taller up front, handle bigger tires, and stay composed off road and on the highway, this Bilstein 6112 and 5160 package is a true performance upgrade built around Bilstein’s own coil spring and damper technology.