KSP 1.5-Inch Wheel Spacers for Silverado/Sierra 1500 — Forged 6x139.7 Hubcentric, 78.1mm Bore, M14x1.5 Studs

Elevate your GM truck fit with KSP forged wheel spacers

Our KSP PERFORMANCE 1.5-inch wheel spacers are engineered to complement the driving experience of Silverado 1500, Sierra 1500, Tahoe, Suburban, Yukon, and related GM vehicles. Built as a forged, hub-centric upgrade, they aim to preserve wheel balance and steering feel while allowing you to fine-tune stance and clearance.

Fit and compatibility are defined by a 6x5.5 (6x139.7mm) bolt pattern and a hub bore of 78.1mm. The M14x1.5 studs are integrated into the design, and all hardware is sized to ISO/DIN 10.9–12.9 strength grades, ensuring capable fastenings for everyday driving and light-duty trail use.

Craftsmanship you can feel

These spacers are forged from 6061-T6 aircraft-grade aluminum, a material chosen for durability in a lightweight package. A durable black anodized finish adds corrosion resistance and a clean look under the wheel. CNC precision machining ensures accurate hole spacing and reliable fit on a wide range of wheels that share the given pattern.

• Precise dimensions and hub-centric design reduce vibrations and help align wheel planes with the hub.
• High-quality SCM435 steel bolts and ISO/DIN hardware provide robust security during road use.

Installation details and care

• Package includes four forged spacers, ready for a four-wheel upgrade on compatible trucks.
• Recommended torque: 85–95 ft-lbs; thread locker is included to help prevent loosening.
• If screws appear too long during installation, the extra length can be trimmed without compromising safety.
• Hub bore compatibility of 78.1mm supports broad wheel choices while maintaining proper centering.

Real-world use scenarios suggest a more planted stance and improved wheel clearance when paired with compatible wheels and tires. The forged construction and heat-treated hardware are designed to resist everyday road stress and wear, while the design aims to keep wheels balanced when rotating at speed. While results depend on the full wheel setup, many drivers report a confident, composed feel under highway miles and light off-road use.

We emphasize practical expectations: this is a universal fit within the stated bolt pattern, and some installations may require trimming the screw length. Always verify the final clearance with your chosen wheels and tires. KSP PERFORMANCE backs the spacers with a 30-day refund and a 12-month replacement policy, and our support team is available to answer questions during installation or after you’ve tested the fit on your vehicle.