CFMi 4" Shackle Flip Kit: K5 Blazers, Pickups, Suburbans (73-87) - Excludes K-30
$499.99
This is a complete rear shackle flip bracket and shackle kit for 1973–1991 Chevy and GMC K-series pickups, Blazers, and Suburbans (except K30). This kit replaces your factory rear shackle hanger with a high-articulation flip bracket to correct your suspension geometry and improve ride quality — while providing approximately 4" of lift when paired with a stock-length shackle.
The included shackles are made-to-order in your preferred length, allowing you to fine-tune lift height and shackle angle to match your springs and desired performance.
Included in the Kit:
- Rear Shackle Flip Brackets (pair)
- Welded Nut Strips for Install
- Mounting Hardware
- Custom-Length Shackles – Choose:
- 4.5" (stock length)
- 5"
- 5.5"
- 6"
- 6.5" (adds ~1" more lift)
Key Features:
- Provides approx. 4" of lift with 4.5" shackles*
- Additional lift possible with longer shackles
- Adjustable shackle hole spacing for custom tuning (½" increments)
- More articulation and smoother ride with correct geometry
- Bolt-on install using factory rivet holes (after removing factory hanger rivets)
- Welded nut strips make install cleaner and stronger
- Compatible with 52" and 56" rear leaf springs
- No welding required
- Shackles included — no extra charge
Fitment:
- 1973–1987 Chevy/GMC K10 & K20 Pickups
- 1973–1991 K5 Blazer & GMC Jimmy
- 1973–1991 K-Series Suburban
- Does NOT fit K30 one-ton trucks
Install Notes:
- Factory shackle hanger must be removed (grind/drill factory rivets)
- Gas tank removal recommended for easier access
- Does not include front spring hangers — this is a rear-only kit
- Leaf springs not included
- Shock travel, spring rate, and bushing condition will affect final ride height
Shipping & Build Time:
- This item is Made to Order
- Ships raw (unpainted unless requested)
- Allow 2 to 14 days for fabrication
- Free shipping in the lower 48
Need help choosing the right shackle length or pairing this kit with front components? Message us any time — we’re happy to help you get your Squarebody riding right.