The Megawatt™ Performance Rock Sliders with Step are aftermarket underbody protection built for the Rivian R1S, fitting both Gen 1 and Gen 2 versions of the SUV. Made by Electruck4x4 and priced at $1,999.00, they're designed to protect the vehicle's rocker panels and battery pack area during off-road use, while also doubling as a step for entry and exit.
According to the brand, the sliders are built from 100% DOM (drawn-over-mandrel) USA steel. The main slider tube measures 2 inches in diameter with 0.188-inch wall thickness, and the rub rail is 1.75 inches in diameter at 0.120-inch thickness. Mounting brackets are cut from 0.125-inch plate steel. Each side weighs approximately 65 lbs, and the assembly is TIG welded with a four-stage powder coat finish, hand-made in Phoenix, Arizona. The brand also publishes a comparison table on its product page positioning these specs against three unnamed competitor products across categories like mounting points, rail thickness, and weld type - framing worth noting as brand-authored marketing rather than independently verified third-party testing.
At the time of this review, the product page shows the sliders as "Sold Out" in the quantity selector. However, the same page also states a current lead time of approximately 8 weeks from order date, which suggests this is a made-to-order or backorder situation tied to production batches rather than a simple, indefinite stock-out. Shoppers interested in this product should check directly with Electruck4x4 on current order and lead-time status, since made-to-order timelines can shift.
The page's structured review widget shows a 5.0 out of 5 rating based on 1 formal review. Separately, the page displays roughly 20 named customer and professional testimonials, including quotes attributed to J. McGovern (Rivian Stories Co-Founder) and Bill Burke (a professional off-road racer and Rivian off-road instructor). These read as brand-curated marketing testimonials rather than an independently verified review count, so they're worth treating as anecdotal endorsements alongside - not in place of - the single formal review score.
The Megawatt Rock Sliders are a heavy-duty, made-in-the-USA option for Rivian R1S owners who want serious underbody protection, backed by a detailed spec sheet and endorsements from off-road community figures. The current sold-out status paired with an 8-week lead time indicates new orders are likely queuing for the next production run rather than being turned away outright, so interested buyers should confirm current timing before ordering.
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