Steel bumpers are stronger, heavier (70-120 lbs), and more affordable ($300-800). They handle repeated impacts but rust without proper coating. Aluminum bumpers are lighter (40-70 lbs), rust-proof, and cost more ($600-1,500). For serious rock crawling and winch use, steel is preferred. For overlanding and weight-sensitive builds, aluminum is the better choice.

Not all bumpers are winch-compatible. Look for bumpers with a built-in winch plate designed for a specific winch size (most accept 8,000-12,000 lb winches). The bumper must have an integrated fairlead opening and adequate structural support. Stubby bumpers often support winches but full-width bumpers provide more protection.

A steel front bumper adds 70-120 lbs over stock, which slightly reduces front suspension travel and may cause mild nose dive during braking. Upgrading to heavier front coil springs (about $100-200) compensates for the weight. Rear bumpers with tire carriers add 80-150 lbs and may require bump stop extensions.

Stubby bumpers cover only the center section, providing maximum approach angle and clearance for tight trails. Full-width bumpers extend to the fender flares, offering more frontal protection and often including fog light provisions. Mid-width bumpers are a compromise with moderate protection and approach angle. Stubby is better for rock crawling, full-width for trail protection.