In this video I put the Ristretto 512 through the kind of testing I’d normally save for an e-moto, because this thing is basically a stealth electric dirt bike pretending to be an eBike. I start with a top speed test, then line it up in a drag race (512A vs 512XX) to see how that 4500W mid-drive hits when you actually pin it. The big takeaway: it’s got that Sur Ron-style punch—snappy torque, fast acceleration, and it pulls way harder than you’d expect from something that looks this low-key. After the speed stuff, I take it into the real world: hill climbs, off-road trail testing, suspension hits, and a steep hill challenge to see where it taps out. I also call out the things I’d change, because I’m not here to hype—I'm here to ride it like you would and tell you what’s worth it. If you want a bike that can rip street and trail with serious torque, but still keep that “stealth” vibe, the 512 is one of the wildest builds I’ve tested yet. Just remember: street-legal claims depend on your local rules, so check before you send it.