Fabtech's 8" Radius Arm system for the Ford Super Duty is built to handle the on and offroad demands of the truck enthusiast. This Radius Arm system is a heavy duty upgrade to the factory suspension and will provide additional strength to the vehicle. The heart of this quality system is Fabtech's legendary tubular Radius Arms. The design of these arms comes from Fabtech's racing experience and are built with a tubular structure reinforced by dimple die side plates and heavy gusseting for rugged offroad use. They are superior in strength to the stock stamped arms. Unique to this 8" system is Fabtech's extended length Track Bar to address the hyper sensitive steering box of the late model Super Duty. Fabtech is the only manufacturer with this ground breaking system that offers proper steering performance. Fabtech's extended length Track Bar is 4" longer than stock and is offset to the driver side with a stout 1/4" thick steel mounting bracket. This design helps keep the Track Bar and Draglink closer to parallel than the factory angles to reduce push in the steering. The Track Bar allows for full lock steering of 15.50 wide tires w/ 4 3/4" BS wheels. This high quality 8" System provides increased strength and performance for the demanding Super Duty enthusiast. System includes a free 5 year 60,000 mile powertrain warranty. Each Fabtech component has been designed with specific features and benefits that create this quality suspension system. For a greater understanding of each these components please see below.. Fabtech's 8" Radius Arm system for the Ford Super Duty is built to handle the on and offroad demands of the truck enthusiast. This Radius Arm system is a heavy duty upgrade to the factory suspension and will provide additional strength to the vehicle. The heart of this quality system is Fabtech's legendary tubular Radius Arms. The design of these arms comes from Fabtech's racing experience and are built with a tubular structure reinforced by dimple die side plates and heavy gusseting for rugged offroad use. They are superior in strength to the stock stamped arms. Unique to this 8" system is Fabtech's extended length Track Bar to address the hyper sensitive steering box of the late model Super Duty. Fabtech is the only manufacturer with this ground breaking system that offers proper steering performance. Fabtech's extended length Track Bar is 4" longer than stock and is offset to the driver side with a stout 1/4" thick steel mounting bracket. This design helps keep the Track Bar and Draglink closer to parallel than the factory angles to reduce push in the steering. The Track Bar allows for full lock steering of 15.50 wide tires w/ 4 3/4" BS wheels. This high quality 8" System provides increased strength and performance for the demanding Super Duty enthusiast. System includes a free 5 year 60,000 mile powertrain warranty. Each Fabtech component has been designed with specific features and benefits that create this quality suspension system. For a greater understanding of each these components please see below.. TIRE SIZE - 38/13.5R18 WHEEL - 18X9 W/4 3/4" BS W/MINOR TRIMMING; TIRE SIZE - 38/15.5R18 WHEEL - 18X9 W/4 3/4" BS W/CUTTING; TIRE SIZE - 38/13.5R20 WHEEL - 20X9 W/5" BS W/MINOR TRIMMING; TIRE SIZE - 38/15.5R20 WHEEL - 20X9 W/5" BS W/CUTTING; TIRE SIZE - 40/15.5R20 WHEEL - 20X9 W/5" BS W/CUTTING; 3. NON DUALLY MODELS ONLY.; 163. VEHICLES EQUIPPED WITH 2 PIECE DRIVESHAFT REQUIRE FTS419.; 167. DIESEL MODELS ONLY.; 175. VEHICLES W/ FACTORY REAR SWAY BAR MUST ORDER EXTENDED SWAY BAR LINK KIT PART NUMBER FTS22276.; 179. FRONT DRIVESHAFT MODIFICATION IS REQUIRED OR ORDER DRIVESHAFT (FTS92035). Fabtech 17-20 Ford F250/350 4WD Diesel 8in Radius Arm System w/Stealth Shocks. 8" RAD ARM SYS W/COILS & STEALTH SHKS 17-19 FORD F250/ F350 4WD DIESEL. 8in. RAD ARM SYS W/COILS/STEALTH SHKS 17-18 FORD F250/F350 4WD DIESEL. 8" RAD ARM SYS W/COI. 8in. RAD ARM SYS W/C. Suspension Lift Kit

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