F250 / F350 2005-2022 Ford 4WD - Death Grip Radius Arm Kit by Kryptonite

The Kryptonite KRFDRD1 Death Grip Radius Arm Kit is a high-performance suspension upgrade designed for Ford F-250/F-350 Super Duty 4x4 trucks. Built for extreme durability and improved alignment control, this fully boxed and hand-welded radius arm ensures a secure hold on the front axle while enhancing tire clearance and suspension performance.

This radius arm is engineered to accommodate larger tires, featuring a built-in tire clearance pocket that allows for a 37" x 13.5" tire on a stock 20" rim with 5.5" backspacing. Designed with precision CAD engineering and a unique fixed-position Hexagon Caster Eccentric system, the arm offers five different caster positions in fixed 2° increments, ensuring optimal alignment at any ride height from 0" to 6". Unlike traditional designs, the Hex shape locks alignment adjustments in place, preventing unwanted changes over time or during rough driving conditions. Constructed for heavy-duty use, this radius arm features a durable black powder-coated finish, laser-cut stainless steel logo, and high-strength Grade 10.9 hardware for maximum longevity and performance. This kit is sold as a pair and is a direct bolt-on replacement, making installation straightforward and hassle-free.

The Kryptonite Death Grip Radius Arm Kit is manufactured in the USA and is built to withstand the toughest conditions. Backed by Kryptonite’s "No Fine Print" lifetime warranty, this product is covered against manufacturer defects, premature wear, or breakage. To qualify, products must be purchased from an authorized dealer, and warranty registration must be completed within 90 days of purchase.

Features and Benefits:

• Fully boxed and hand-welded construction for extreme durability
• Provides a secure hold on the front axle while improving suspension performance
• Built-in tire clearance pocket allows for 37" x 13.5" tires on a stock 20" rim with 5.5" backspacing
• Exclusive Hexagon Caster Eccentric system offers five fixed positions in 2° increments
• Ensures proper alignment at any ride height from 0" to 6"
• Hex shape locks alignment adjustments in place to prevent unwanted changes over time
• Precision CAD-engineered design for optimal performance
• Durable black powder-coated finish for corrosion resistance
• Laser-cut stainless steel logo adds a high-quality appearance
• High-strength Grade 10.9 hardware for maximum longevity
• Direct bolt-on replacement for easy installation
• Manufactured in the USA for premium quality and craftsmanship
• Built to handle extreme driving conditions and heavy-duty applications
• Backed by Kryptonite’s "No Fine Print" lifetime warranty
• Warranty covers manufacturer defects, premature wear, and breakage