KSP Performance 2" wheel spacers (8x6.5" / 8x165.1mm) deliver a wider, more aggressive stance for 8-lug Chevy/GMC trucks and help create extra clearance between the tire and suspension for running larger tires. Each spacer is forged from 6061-T6 aluminum and CNC machined for precise, flat mounting surfaces and consistent fitment. Hub bore is 126.15mm, and pre-installed SCM435 steel studs with M14x1.5 thread pitch are heat treated to ISO/DIN 10.9–12.9 grades for dependable clamping strength. Designed for popular 8-lug applications such as 1999–2010 Silverado/Sierra 2500/3500 and other vehicles using the 6.5" bolt pattern. Kit includes 4 wheel spacers plus 32 open-ended lug nuts and hardware. For best results, install on clean, rust-free hubs, hand-tighten only (no impact), use thread locker, confirm 5–7 full turns before tightening, and re-torque after 50–100 miles and again after 2,000–3,000 miles.