Bilstein B8 18-20 Jeep Wrangler Rear Shock Absorber (Lifted Height 3-4.5in / Requires Bump Stop Ext) Air Intake Systems>Scoops & Snorkels 3" 409 Stainless Steel Construction:

3" 409 Stainless Steel Construction: This axle-back exhaust system is constructed of 3" mandrel-bent 409 stainless steel tubing for maximum strength and durability

If the look of aluminum is not really your thing

BLOX Racing MLS Exhaust Gasket Set - 6 Layers - 04-19 Subaru STi

All BBK mass air meters are CNC Machined large bore aluminum housing's with a custom BBK calibrated electronic sensor placed on top to accurately measure air flow for accurate air fuel ratio's

and dually models

Bilstein B8 18-20 Jeep Wrangler Rear Shock Absorber (Lifted Height 3-4.5in / Requires Bump Stop Ext) Air Intake Systems>Scoops & Snorkels 3" 409 Stainless Steel Construction:Bilstein B8 5100 shock absorbers are designed as a direct fit solution for lifted trucks and SUVs. These shock absorbers feature a monotube design which provides consistent fade free performance. B8 5100 shock absorbers utilize a unique, velocity sensitive, digressive piston which reacts to changing road conditions. All B8 5100 shock absorbers are tuned for each specific application to assure optimal performance is achieved. B8 5100 shock absorbers