Bilstein B8 6112 Front Lift Kit for 2019-2026 Silverado/Sierra 1500 - 47-309524

The Bilstein 47-309524 B8 6112 Front Lift Kit is a matched front suspension system for select 2019-2026 Chevrolet Silverado 1500 Trail Boss and GMC Sierra 1500 AT4 applications. This kit combines two large-body 60mm monotube shock absorbers with two custom-matched coil springs and billet aluminum spring seats. For the listed Trail Boss and AT4 applications, Bilstein specifies approximately 0 to 1.2 inches of front lift depending on the selected snap-ring spring-seat position and vehicle configuration.

The B8 6112 uses a 2.65-inch shock body and large 60mm digressive piston for increased damping control, while multiple snap-ring grooves provide adjustable spring-seat positioning. The result is a complete spring-and-shock front suspension upgrade designed to increase clearance, support larger tire setups, and improve suspension control for both on-road and off-road driving.

Key Features & Specs:

• Brand: Bilstein
• Series: B8 6112
• Part Type: Front Suspension Lift Kit
• Position: Front
• Application: Chevrolet Silverado 1500 Trail Boss / GMC Sierra 1500 AT4
• Front Lift Range: Approximately 0 to 1.2 in.
• Shock Quantity: 2
• Spring Quantity: 2
• Spring Seats: 2 billet aluminum spring seats
• Internal Design: Monotube
• Body Design: Snap-ring grooved coilover-style body
• Ride Height Adjustment: Multiple snap-ring spring-seat positions
• Body Diameter: 2.65 in.
• Piston Diameter: 60mm
• Shaft Diameter: 18mm
• Front Spring Rate: 600 lbs/in.
• Collapsed Length: 17.78 in. / 451.6mm
• Extended Length: 21.97 in. / 558.0mm
• Shock Travel: 4.19 in.
• Damper Finish: Zinc plated
• Spring Finish: Black
• Reservoir: No
• Spring Seat Included: Yes
• Boot Included: No
• Replacement Mounting Kit: B4-KT1-Z317A00
• Purpose: Increased ride height, ground clearance, tire clearance, and suspension control
• Product Weight: 55.03 lbs
• Package Dimensions: 26.8 x 4.15 x 4.15 in.
• UPC: 651860860817
• Manufacturer Part Number: 47-309524
• SKU: BIL47-309524
• Condensed Part Number: 47309524

Fitment:

• 2019-2026 Chevrolet Silverado 1500 Trail Boss
• 2019-2026 GMC Sierra 1500 AT4
• Position: Front
• Front Lift: Approximately 0 to 1.2 in. depending on setup

The B8 6112 is designed as a matched spring-and-damper suspension system rather than a simple spacer-style leveling kit. Bilstein pairs its 60mm monotube shocks with application-specific cold-wound coil springs, allowing the spring and damper characteristics to work together as a complete front suspension package.

Multiple snap-ring grooves machined into the shock body allow the billet aluminum spring seat to be repositioned for different ride-height settings. On part number 47-309524, Bilstein's application-specific data lists approximately 0 to 1.2 inches of front lift for the Silverado Trail Boss and Sierra AT4. Final ride height can vary with vehicle equipment, accessories, weight distribution, and spring-seat position.

The oversized 2.65-inch body and 60mm digressive piston provide greater fluid capacity and damping control than smaller conventional shock absorbers. Bilstein's digressive damping design is intended to provide controlled chassis response during everyday driving while maintaining suspension capability over rough roads and off-road terrain.

The supplied black coil springs have a listed 600 lb/in front spring rate and are matched to the B8 6112 dampers. Zinc-plated shock bodies provide corrosion resistance, while the included billet aluminum spring seats complete the adjustable front suspension assembly.