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 89) if you want the smarter all-round bike — lighter, cheaper, punchier off the line, and higher-scoring. It's the right call for most riders.
- Buy the Storm Bee ($8,999, Score 88) if you specifically want the 75 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 75 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
| Sur-Ron Ultra Bee | Sur-Ron Storm Bee | |
|---|---|---|
| VoltRipper Score | 89 | 88 |
| Price | $6,499 | $8,999 |
| Peak power | 24.5 kW | 22.5 kW |
| System voltage | 74V | 104V |
| Battery | 4,440 Wh | 5,720 Wh |
| Top speed | 59 mph | 75 mph |
| Weight | 195 lb | 280 lb |
| Real-world range | ~40 mi (est.) | ~45 mi |
| Frame | Mid/full-size | Full-size (450-class) |
| Rider-weight rating | 220 lb | 220 lb |
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, decisively. 75 mph vs 59. 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. The 5,720 Wh pack is ~29% bigger than the Ultra Bee's 4,440 Wh, and the Storm Bee does a verified ~45 real miles to the Ultra Bee's estimated ~40. A modest but genuine edge for long days.
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 higher-scoring, 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, higher-scoring — the smarter buy for the majority. (Full review →)
- You want 75 mph 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 83, $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 75 mph, 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, costs $2,500 less, and scores a point higher. For most riders — especially those who value handling and value over top speed — the Ultra Bee is the smarter big Sur-Ron. 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. We disclose affiliate links before you click them, and we're spec-verified/data-driven rather than hands-on until first-hand testing exists.
FAQ
Is the Sur-Ron Storm Bee better than the Ultra Bee?
Not for most riders — and here's the surprise: the cheaper Ultra Bee actually makes MORE peak power (24.5 kW vs 22.5 kW), weighs 85 lb less, costs $2,500 less, and scores higher on our board (89 vs 88). The Storm Bee's genuine advantages are top speed (75 vs 59 mph) and a full-size frame, not power. It's more motorcycle, not more capable.
Why is the Storm Bee faster if it has less power?
Because top speed comes from voltage and gearing, not just peak kilowatts. The Storm Bee runs a 104V system versus the Ultra Bee's 74V, and it's geared for a 75 mph top end. The Ultra Bee's slightly higher peak power is packaged in a lighter bike geared for acceleration, so it's punchier off the line but tops out lower. It's a clean example of power not equaling speed.
Which Sur-Ron is best for a bigger or taller rider?
The Storm Bee — it's a full-size, 450-class frame with the most room and the most planted highway-speed feel. The Ultra Bee (35.8-inch seat) already fits most adults well, but very tall or big riders who want genuine full-size motorcycle ergonomics will prefer the Storm Bee. Note both Sur-Rons carry the same 220 lb rider-weight rating.
Is the Storm Bee worth $2,500 more than the Ultra Bee?
Only if you specifically want its three real advantages: the 75 mph top speed, the bigger 5,720 Wh battery (a bit more range), or the full-size frame. For raw power, handling, value, and the trail riding most people actually do, the lighter and cheaper Ultra Bee is the smarter buy — and it even scores a point higher.