Tuff Mounts Bolt Kits take the guesswork out of your install with high-quality fasteners tailored to your engine, transmission, and mount upgrades. Each kit includes premium-grade bolts, washers, and hardware designed for precise fitment and long-term durability. Whether you’re bolting in an LS engine, crossmember, or gearbox, these kits save time and ensure a secure, professional result — no trips to the hardware store required.