TRZ Motorsports Front Suspension Kit / "Donk" Big Wheel Specific (1971 - 1976 B-Body) - 321D-Package
Complete Donk-Specific Front Suspension System for 1971 - 1976 GM B-Body
The TRZ Motorsports Donk Front Suspension Kit (Part #321D-Package) is engineered specifically for 1971 - 1976 Big Wheel B-Body cars running raised ride heights and oversized wheels. This package restores crucial suspension travel, corrects geometry, and delivers the strength needed for heavy front-end loads and high-horsepower builds.
The system includes chrome-moly upper and lower A-arms built specifically for Donk applications, billet 2" lift spindles with integrated steering arms, and a premium Baer 14" Pro+ brake kit. It is designed for coil-overs only (not included), allowing maximum tuning flexibility and improved ride quality.
The billet spindles feature modern integrated bearing hubs and can accept both 5" x 4.75" and 5" x 5" bolt circles. The Baer brakes include 14" drilled/slotted rotors, red 6-piston calipers, billet caliper brackets, and dual bolt-pattern rotor options. Everything is engineered to maintain proper geometry, improve braking, and maximize front-end travel for superior weight transfer.
Important: Hubs and wheel studs ship loose so the installer can configure the correct bolt pattern. The system requires a 1/2" hardware bump steer kit (TRZ Part #321-202-2). This package is designed for coil-overs ONLY with a 1" wide lower bearing and 1/2" ID (AFCO, QA1, Viking, Menscer, etc.).
Performance Features
- Designed for 1971 - 1976 Big Wheel/Donk GM B-Body cars
- Regains suspension travel lost from lifted ride heights
- Upper & lower chrome-moly A-arms with ball joints and travel limiters
- Billet 2" lift spindles with integrated steering arms
- Spindles accept both 5" x 4.75" and 5" x 5" wheel bolt circles
- Baer Pro+ brake kit with 14" drilled/slotted rotors & 6-piston red calipers
- Billet caliper brackets and dual-pattern rotors included
- Allows maximum front-end travel for improved weight transfer
- Retains proper suspension geometry throughout travel
- Hubs and wheel studs ship loose for bolt-pattern selection
- Requires 1/2" hardware bump steer kit (321-202-2)
- Coil-over ONLY design (1" wide lower bearing, 1/2" ID)
Quick Specs
- Vehicle Application: 1971 - 1976 GM B-Body (Donk / Big Wheel)
- A-Arm Material: Chrome-moly
- Spindles: Billet 2" lift with integrated steering arms
- Brakes: Baer 14" Pro+ (drilled/slotted, red 6-piston)
- Bolt Pattern Options: 5" x 4.75" or 5" x 5"
- Wheel Studs: 1/2"-20 thread, 2" long
- Suspension Type: Coil-over ONLY
- Required Bump Steer Kit: TRZ 321-202-2
- Kit Ships Unassembled
- Part Number: 321D-Package
Fitment
- 1971 GM B-Body (Donk / Big Wheel)
- 1972 GM B-Body (Donk / Big Wheel)
- 1973 GM B-Body (Donk / Big Wheel)
- 1974 GM B-Body (Donk / Big Wheel)
- 1975 GM B-Body (Donk / Big Wheel)
- 1976 GM B-Body (Donk / Big Wheel)
Frequently Asked Questions
Does this kit work with stock-style shocks or springs?
No. This package is designed for coil-overs only, using a 1" wide lower bearing with a 1/2" ID.
Are the hubs and studs pre-installed in the spindles?
No. They ship loose so you can configure the correct wheel bolt pattern for your setup.
Why Buy from Beefcake Racing?
Beefcake Racing supplies genuine TRZ Motorsports suspension upgrades with fast shipping and real gearhead tech support. For Donk and Big Wheel suspension guidance or coil-over selection, email sales@beefcakeracing.com or call 1-855-827-7223.
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