2020 Forest RiverXLR Thunderbolt 382AMP

Forest River lists the 2020 XLR Thunderbolt 382AMP at 15,729 lb dry, a net carrying capacity of 5,271 lb and a pin weight of 3,760 lb. It prints no GVWR for it.

It is 43' 9" long and 13' 4" high. Forest River prints its tanks as 158 gal fresh, 80 gal grey, 80 gal black.

Among the 5 XLR Thunderbolt floorplans Forest River’s XLR Thunderbolt brochure (filed in Forest River’s /brochures/2020/ folder; the brochure prints no year) lists with a published dry weight, it is number 3 from the lightest, in a range from 13,644 lb (XLR Thunderbolt 369AMP) to 16,364 lb (XLR Thunderbolt 422AMP). Every figure in that comparison is Forest River’s, for the same model year.

Every number on this page was read on 6 Nov 2026 from Forest River’s XLR Thunderbolt brochure (filed in Forest River’s /brochures/2020/ folder; the brochure prints no year); model year 2020 comes from where the maker files it on its own site, not from the document’s text.

How the 382AMP differs from the other four XLR Thunderbolt floorplans. Most distinctive first. How these ranks are worked out.

• Pin weight, 3,760 lb: heaviest of five; next is the 422AMP (3,643 lb).
• Pin weight as a share of dry weight, 23.9%: largest of five; next is the 369AMP (23%).
• Cargo capacity, 5,271 lb: second-largest of five, between the 413AMP (4,720 lb) and the 381AMP (5,551 lb).
• Length, 43 ft 9 in: second-shortest of five, between the 369AMP (39 ft 10 in) and the 381AMP (44 ft).
• Grey tank, 80 gal: second-smallest of five, between the 369AMP (64 gal) and the 422AMP (86 gal).
• Dry weight, 15,729 lb: third-lightest of five, between the 381AMP (15,449 lb) and the 413AMP (16,280 lb).
• Black tank, 80 gal: shared with the 381AMP; of five, one smaller and two larger, nearest the 369AMP (32 gal) and the 413AMP and 422AMP (86 gal).

Next to the 381AMP, the nearest lighter floorplan by dry weight, the 382AMP is 280 lb heavier by dry weight, has 280 lb less cargo capacity, has a pin weight 425 lb heavier, is 3 in shorter, has a fresh tank 56 gal larger and has a grey tank 20 gal smaller; the two publish the same exterior height and black tank.

Next to the 413AMP, the nearest heavier floorplan by dry weight, the 382AMP is 551 lb lighter by dry weight, has 551 lb more cargo capacity, has a pin weight 437 lb heavier, is 9 in shorter, has a grey tank 38 gal smaller and has a black tank 6 gal smaller; the two publish the same exterior height and fresh tank.

Forest River’s XLR Thunderbolt brochure (filed in Forest River’s /brochures/2020/ folder; the brochure prints no year) lists 5 XLR Thunderbolt floorplans; every one with a printed weight has a page here.

A full 158-gallon fresh tank is about 1,311 lb of water, 25% of the XLR Thunderbolt 382AMP’s 5,271 lb cargo capacity, leaving 3,960 lb. Across 5 XLR Thunderbolt floorplans the water share runs 15% to 36%, and 3 give up more than this one. Nearest on that share: XLR Thunderbolt 381AMP at 15% and XLR Thunderbolt 413AMP at 28%.