Sur-Ron Ultra Bee vs Storm Bee (2026): Mid-Tier or Full-Size?

The short answer

Both are top-tier Sur-Rons — this is a fit decision, not a good-vs-bad one. But the conventional wisdom ("the bigger, pricier Storm Bee must be the better bike") is wrong for most buyers:

• Buy the Ultra Bee ($6,499, Score 94) if you want the smarter all-round bike — lighter, cheaper, and punchier off the line. It's the right call for most riders, even though the Storm Bee edges it on the Score.
• Buy the Storm Bee ($8,999, Score 96) if you specifically want the 68.3 mph top speed, the bigger battery, or a full-size 450-class frame — and you'll accept 85 extra pounds and $2,500 for them.

The twist: the cheaper Ultra Bee actually makes more peak power. The Storm Bee is more motorcycle, not more capable.

The surprise: the smaller bike makes more power

Almost everyone assumes the big, expensive Storm Bee is the more powerful Sur-Ron. It isn't. The Ultra Bee peaks at 24.5 kW; the Storm Bee at 22.5 kW. In a bike that's also 85 lb lighter, the Ultra Bee has the clearly better power-to-weight ratio and the punchier acceleration.

So what does the Storm Bee's extra $2,500 buy? Top speed and size, mostly. Its 104V electrical system (versus the Ultra Bee's 74V) and taller gearing push the top end to 68.3 mph, and its full-size chassis and bigger battery make it a proper big-bike. Those are real, valuable things — for the right rider. They just aren't "more power."

The core matchup

Head-to-head, factor by factor

Peak power → Ultra Bee. 24.5 kW vs 22.5 kW — the cheaper bike wins outright, and in a 85-lb-lighter package the power-to-weight gap is bigger still. Off the line and on tight trails, the Ultra Bee is the punchier bike.

Top speed → Storm Bee. 68.3 mph vs 59 — a real 9 mph, though less of a gulf than the 75 mph figure we previously carried suggested. This is the Storm Bee's headline advantage — its 104V system and gearing are built for top end. If you want to sustain high speed on open ground, nothing about the Ultra Bee matches it. (Why more power doesn't always mean more speed is exactly this: gearing and voltage decide top end.)

Battery & range → Storm Bee on hardware, but nobody has measured either one ridden hard. The 5,720 Wh pack is ~29% bigger than the Ultra Bee's 4,440 Wh, and that gap is real. Our ~45 mi figure for the Storm Bee is our own estimate from battery capacity, not a measured result, and we publish no hard-riding number for the Ultra Bee at all. The honest read: 29% more battery usually means meaningfully more range, and we'd expect the Storm Bee to hold that edge — but we're inferring it from the pack, not reporting it from a ride.

Weight & handling → Ultra Bee, decisively. At 195 lb the Ultra Bee is 85 lb lighter than the 280 lb Storm Bee. That's the difference between a bike you flick around and one you muscle around — easier to loft, corner, pick up, and load. For technical trail riding, the Ultra Bee is far more agile.

Size & big-rider fit → Storm Bee. The Storm Bee is a full-size, 450-class machine — the most room and the most stable big-bike feel, which very tall or big riders will appreciate. The Ultra Bee's 35.8-inch seat already fits most adults, so this only matters if you specifically want full-size ergonomics. (Both are rated to the same 220 lb, so heavier riders should read this first.)

Price & value → Ultra Bee. $6,499 vs $8,999 — $2,500 less for the more powerful, lighter bike. On value it isn't close.

Support & aftermarket → tie. Both ride Sur-Ron's ecosystem — the deepest parts catalog, dealer network, and community in electric dirt. Neither gives anything up.

Which should you buy?

• Most riders / power-to-weight / technical trails / value: Ultra Bee. Lighter, cheaper, punchier — the smarter buy for the majority, even if the Storm Bee edges it on the Score. (Full review →)
• You want the higher top speed, max battery/range, or a full-size frame: Storm Bee. Buy it for speed and size, not for power. (Full review →)
• You're not sure you need either this much bike: step down to the Light Bee X (Score 89, $4,400) — the value benchmark and the better first bike for most. (Full review →)

Not sure which fits your size, skill, and riding? Run the Find Your Ride configurator.

The honest bottom line

The Storm Bee is the bigger, faster, full-size bike — and if you genuinely want its 68.3 mph top end, a large battery, or a 450-class frame, it earns its price. But don't buy it assuming it's the more powerful or more capable Sur-Ron, because it isn't: the Ultra Bee makes more peak power, weighs 85 lb less, and costs $2,500 less. For most riders — especially those who value handling and value over top speed — the Ultra Bee is the smarter big Sur-Ron, even though the Storm Bee scores higher on our full-size-friendly board. Buy the Storm Bee for speed and size, or the Ultra Bee for everything else.

VoltRipper is independent — we don't sell Sur-Ron or any bike, and our Score is based on verified specs, not who pays us. Affiliate disclosure is included on monetized pages, and we're spec-verified/data-driven rather than hands-on until first-hand testing exists.