Torsion Bar Set - '85-'91 Isuzu Trooper 4×4 & '87-'97 Mazda 4X4
- A precision-engineered suspension foundation for classic late-80s and 90s 4WDs. These solid 26mm torsion bars are a significant heavy-duty upgrade over factory units, providing a 20–30% increase in spring rate. This extra stiffness is essential for vehicles equipped with heavy steel plate bumpers, winches, or oversized tires, as it eliminates "nose-dive" during braking and prevents the front suspension from bottoming out on technical trails.
- Application: Front Torsion Bar Set
- Diameter: 26mm (Heavy-Duty Upgrade)
- Length: 36.50"
- Spring Rate: +20% to +30% over OEM
Isuzu Trooper 4x4 (UBS): 1985 through 1991 (Square body generation)
Mazda B-Series 4x4 (B2200/B2600): 1987 through 1993
Mazda B-Series 4x4: 1994 through 1997
Note: Fits 4WD models utilizing Independent Front Suspension (IFS). Always verify your bar length matches 36.50" before ordering, as manufacturers often used different lengths for 2WD vs 4WD variants.
Material: Solid 4340 aircraft-grade alloy steel, selected for its extreme fatigue resistance and "torsional memory."
Manufacturing: Centerless ground to a precise 26mm diameter to ensure a perfectly linear spring rate and remove surface micro-imperfections that can lead to stress cracks.
Heat Treatment: Through-hardened and shot-peened to maintain ride height and prevent the front end from "settling" or sagging over time under heavy armor loads.
Finish: Industrial-grade powder coating for maximum protection against road salt, moisture, and trail debris.
❌ 2WD Models: These bars are typically length-tuned for 4WD geometry. Most 2WD Isuzu and Mazda pickups utilize a different bar length and spline count.
❌ Post-1991 Trooper: Will not fit 1992+ Troopers. The second-generation Trooper (92-02) moved to a significantly longer and thicker torsion bar design.
❌ 20-Spline vs 26-Spline: While these fit the standard 4340 conversion specs, verify your anchor and torque arm spline count matches the heavy-duty 26mm bar requirements.
- ❌ Light-Duty Builds: If your truck is completely stock (no winch, no bumper), a 26mm bar may provide a very rigid ride. They are best suited for vehicles with at least 100+ lbs of additional front-end weight.
Premium Construction
⚠️ Critical Fitment Exceptions
Even if your vehicle falls into the year ranges above, you must ensure it does not fall under these exceptions:
What’s Included
- Pair of high-performance torsion bars
Warranty
Backed by a 1-year warranty for peace of mind.