Bilstein 6112 Front Kit 47-309524, Select 2019-26 Silverado Trail Boss / Sierra AT4, 0-1.2" Lift

Bilstein B8 6112 Front Shock and Spring Kit 47-309524

This front-only kit combines two 60mm Bilstein shock absorbers with matched coil springs and spring seats for select Silverado 1500 Trail Boss and Sierra 1500 AT4 applications. Bilstein's exact application table specifies 0–1.2 inches of front lift for the listed configurations, not a universal 0–2.75-inch range.

Included components

• One 47-309524 front kit — two 60mm shock absorbers, two matched cold-wound coil springs and two billet aluminum spring seats; provides 0–1.2 inches of front lift on listed applications

Engine-specific vehicle fitment

• 2019–2026 Silverado 1500 Custom Trail Boss / LT Trail Boss: listed 5.3L V8 applications
• 2022–2026 Silverado 1500 Custom Trail Boss / LT Trail Boss: listed 3.0L inline-six applications
• 2019–2021 Sierra 1500 AT4: listed 5.3L V8 applications
• 2020–2026 Sierra 1500 AT4: listed 3.0L inline-six applications

Confirm the exact year, model, trim and engine in Bilstein's application table before ordering. These ranges do not establish compatibility with other engine combinations, ZR2 or AT4X.

Front ride-height adjustment

Selectable spring-seat positions allow front height adjustment within the listed 0–1.2-inch range on the compatible factory-raised Trail Boss and AT4 applications. Do not use a generic lift range from another 6112 kit or assume additional stacked leveling components are approved.

This is a shock-and-spring kit, not a complete preassembled coilover pair. Follow the installation instructions for assembly and reuse of compatible original mounting components. Rear shocks and rear lift components are not listed as included.

6112 damping design

The large 60mm digressive piston provides damping control for changing road and trail conditions. Matched springs and selectable spring-seat positions provide an application-specific front suspension package.

Manufacturer fitment and installation references

• Bilstein 47-309524 exact application table and specifications
• Bilstein installation instructions (PDF)

Follow the manufacturer instructions for assembly and spring-seat selection, then check alignment and suspension clearance.