DUFF TUFF UNLEASHES THE NEW T‑REX EVOLUTION CASTER‑ADJUSTABLE RADIUS ARMS
Knoxville, TN – June 2025 – Duff Tuff, the leading name in advanced Bronco suspension systems, proudly introduces its latest innovation: the T‑Rex Evolution Caster‑Adjustable Stock‑Length Radius Arms. Engineered for bolted precision and designed for adventurers, these arms are redefining how off‑road enthusiasts navigate lifted Broncos and classic F‑Series 4×4s.
Designed for Precision Driving & Tire Clearance
These stock‑length arms aren’t just a refinished factory replica—they’re built with a purpose. NO CORE CHARGES EVER Featuring a built‑in caster offset, plus 4.25° of fixed caster and an additional 6.5° of fine‑tuned adjustment, they offer unparalleled steering control and handling stability. And yes, they are 100% bolt‑in—no welding or frame alterations required.
Street & Trail Ready
Ideal for drivers who split time between daily roads and rugged trails, the T‑Rex Evolution supports stock height or up to a 6″ lift (8″ for ’78–’79 models) while accommodating tire sizes up to 37″—without rubbing or cutting.
Durable Build, Sleek Finish
Manufactured in the USA, each arm arrives powder‑coated in Signature Duff Blue or Midnight Metallic Black, complete with all necessary hardware, making installation straightforward and visually striking.
Broad Compatibility
Compatible with Early Broncos (1966–’77), Big Broncos (’78–’79), and 1966–’79 F‑Series 4×4s—and works flawlessly alongside Duff’s long‑tube headers produced since 2002.
Now Available for Pre‑Order
Announced this week, the T‑Rex Evolution arms are now available for pre‑order. Reach out to James Duff directly to place your order and be one of the first to evolve your Bronco build.
What Makes the T‑Rex Evolution a Game‑Changer:
• Adjustable caster cam bolts – Tailor steering precision and return‑to‑center feel independently for each wheel.
• No welding or drilling needed – Straightforward bolt‑in install saves time and preserves original frame mounts.
• Optimized for lifted Broncos – Maintains a tight turning radius even with larger tires.
• Built‑in suspension flexibility – Adds articulation and a smoother ride without harsh factory bind.
• Made in USA with style – Rugged, reliable, and premium-finished—angles meet aesthetics.
Customer Notice:
These T‑Rex Evolution arms ship with head unit bushings, head units, and hardware included. If your Bronco utilizes cast “C‑caps” or dual-shock setups, specific components like spacers or cap mounts may be required. Additional accessories, such as C-bushings, lower coil retainers, and frame bushings, are available.
Recommended Pairings:
We recommend pairing the T‑Rex Evolution arms with its MS2020 shocks, Heim steer upgrades, and premium coil systems for a complete performance overhaul.
Ready to Take the Next Step?
To pre-order the T‑Rex Evolution Caster‑Adjustable Radius Arms or schedule a fitting session, contact Duff Tuff Sales directly through DuffTuff.com or give us a call.
“Our new T‑Rex Evolution – Caster Adjustable arm is now ready for pre‑order. Give us a call today to place your order.”
