Bolt-On Chevy 63 Leaf Spring Swap Kit
Take the guesswork out of your Chevy 63 swap with Supreme Fabworks’ bolt-on conversion kit—engineered for strength, adjustability, and ease of installation. No measuring or welding required. Just cut off the factory mounts, bolt up our hangers, and you’re ready to go.
 
Key Features:
✅ True Bolt-On Installation – Uses factory rivet holes; no measuring required
✅ Increased Frame Strength – Front hanger bolts through both frame layers, unlike weld-on kits
✅ Adjustable Rear Hangers – Keyed slots and extra bolt holes for precise shackle angle tuning
✅ Complete Kit – Includes shackles, U-bolt flip kit, and all Grade 8 hardware
✅ Bump Stop Compatible – Works with most aftermarket options; contact us for recommendations
Why This Kit Stands Out:
Unlike weld-on kits that only attach to the outer frame layer, our front hangers bolt through both layers of the C-channel frame—providing a stronger, more durable setup. The rear mounts feature keyed adjustment slots and additional reinforcement points to dial in your suspension exactly how you want it.
 
Perfect for Off-Road Builders & Fabricators:
Ideal for long-travel suspension setups
Great for overlanding, crawling, or hauling heavy gear
Perfect upgrade for trucks needing flex and durability with bolt-on simplicity
 
What’s Included:
✔️ Front leaf spring mounts
✔️ Rear leaf spring mounts
✔️ Shackles
✔️ U-bolt flip kit
✔️ All necessary Grade 8 hardware
 
Leaf Spring Sourcing & Setup Tips:
We do not include leaf springs with this kit, but they’re easy to find at local junkyards. We recommend sourcing OEM springs from '99+ trucks—they’re newer, feature a larger front bushing, and hold up better than aftermarket options.
 
Basic Sourcing Guide:
88–98, 2WD – 3+1 leaf pack
88–98, 4WD – 4+1 leaf pack
99+, 2WD – 2+1 leaf pack
99+, 4WD – 3+1 leaf pack
Remove the factory overload spring unless you're carrying significant weight. In that case, we suggest flipping the overload spring to avoid fatigue near the axle perch.
 
Poly Bushing Upgrade Required:
88–98: Energy Suspension 3.2128
99+: Energy Suspension 3.2141G
Measure your leaf spring bushings to confirm fitment before ordering.
 
Closing Statement:
This bolt-on Chevy 63 swap kit delivers strength, adjustability, and simplicity in one complete package—built for serious off-roaders and DIY builders alike. Whether you're aiming for better articulation or just want a cleaner install, this kit gets it done right.