Widebody BMW 8 Series with M5 V-10 Is a Masterpiece

Reyn Speed Shop has taken BMW’s legendary 8 Series to new heights with their incredible 858 CSL, a custom build that captivated onlookers at Monterey Car Week. This one-off creation breathes new life into the first-generation 8 Series, blending modern performance with the classic lines of BMW’s beloved coupe.

The 858 CSL is a visual and mechanical tour de force featuring lightweight carbon fibre body panels designed to shave off precious weight while enhancing the car’s already sleek profile. The bold wide fender flares, custom front and rear fascias, and vented hood give the car an aggressive stance, while bespoke alloy wheels with original BMW centre caps add a touch of heritage. The new headlights, combined with Reyn’s subtle stylistic tweaks, make the car feel fresh and familiar.

But the real magic lies beneath the surface. Reyn Speed Shop has swapped out the original V-8 or V-12 engines for something far more potent—the 5.8-litre V-10 sourced from the E60-generation M5. This isn’t just any engine swap; the V-10 has been upgraded with a longer stroke, likely pushing it well beyond its original 500 horsepower. Adding a six-speed manual transmission ensures a driving experience that’s as engaging as powerful.

The 858 CSL isn’t just a showpiece; it’s a statement of what the first-generation 8 Series could have been if given a chance to evolve. Although it was only displayed briefly, this build leaves a lasting impression, reminding us that the 8 Series, despite its initial commercial struggles, is a car deserving of admiration and reinterpretation. The 858 CSL is a tribute to BMW’s engineering prowess and a nod to the enthusiasts who have kept the spirit of the 8 Series alive.