By: WocoMotors
We build and sell both of these scooters, so we know them inside and out. The ROCRUN ES9 is our premium urban commuter, packing dual 3000W motors and a massive 60V 26Ah battery for long-range city riding. The REYWMER KULLTER collection, highlighted by the Kullter Max, takes a different approach: adventure-ready dual suspension, off-road tires, and 360° LED lighting at a lower price point. Below, we break down how they compare across the dimensions that actually matter when you're spending $900 to $1,500 on an electric scooter.
At a Glance
| Dimension | ROCRUN ES9 | REYWMER KULLTER (Kullter Max) |
|---|---|---|
| Price | $1,499 | $889 (sale; regular $1,399) |
| Motor Power | Dual 3000W (6000W combined) | Dual 1300W / 4000W peak |
| Battery | 60V 26Ah | 60V 23.4Ah |
| Top Speed | 50 mph (claimed) | 50 mph (claimed) |
| Claimed Range | 60 miles | 40–50 miles |
| Tires | 11-inch | 10-inch off-road pneumatic |
| Brakes | Full hydraulic, dual | Dual-brake system |
| Suspension | Rear suspension | Front & rear dual suspension |
| Weight Capacity | Not specified | 300–330 lbs |
| Lighting | Standard | 360° LED with adjustable colors |
| Safety Certification | Not specified | UL 2272 certified |
| Best For | Urban commuting, long range | Mixed terrain, off-road adventure |
Motor Power and Performance
The ROCRUN ES9 is the clear power leader here. Its dual 3000W mid-motors deliver 6000W of combined output, paired with a sine wave 60V 45Ah×2 controller for smooth, responsive acceleration. That's a significant step up from the Kullter Max's dual 1300W motors (4000W peak). Both scooters claim a 50 mph top speed, but the ES9's extra wattage translates to better sustained power at high speeds and more confident hill climbing under heavy rider loads.
That said, the Kullter Max is no slouch. User reviews report 0 to 30 mph in roughly 4.5 seconds for a 235 lb rider, and the scooter handles 30° inclines. For most riders, that's more than enough punch for daily use. The ES9 simply has more headroom for riders who want peak performance without compromise.
Winner: ROCRUN ES9
Range and Battery
The ES9 claims 60 miles on a full charge from its 60V 26Ah battery. The Kullter Max claims 40 to 50 miles from a 60V 23.4Ah pack. On paper, the ES9 wins by a comfortable margin. But real-world range is always lower than manufacturer claims. Industry data from RiderGuide's testing database shows that actual range typically lands around 71% of advertised figures. That would put the ES9 closer to 42 miles and the Kullter Max around 28 to 35 miles in practice. User reviews of the Kullter Max confirm this, with full-throttle riding yielding roughly 30 miles.
If your daily commute is under 25 miles round-trip, either scooter will handle it. For longer commutes or riders who don't want to worry about charging mid-day, the ES9's larger battery provides a meaningful safety margin.
Winner: ROCRUN ES9
Ride Quality and Suspension
This is where the Kullter collection pulls ahead. The Kullter Max features front and rear dual suspension, purpose-built for absorbing rough terrain, potholes, gravel paths, and trail riding. Combined with 10-inch off-road pneumatic tires, it's designed to keep you comfortable on surfaces that would rattle a commuter scooter.
The ROCRUN ES9 has rear suspension only, paired with larger 11-inch tires. On smooth city roads, this setup works well. The bigger tires roll over cracks and small bumps with ease. But if your route includes unpaved sections, broken sidewalks, or you plan to take the scooter off-road on weekends, the Kullter's full dual-suspension system is the better choice.
Winner: REYWMER KULLTER
Safety and Braking
The ES9 uses full hydraulic brakes on both wheels. Hydraulic brakes offer stronger, more consistent stopping power with less hand effort, which matters a lot at speeds approaching 50 mph. This is a premium feature that you typically find on higher-end scooters.
The Kullter Max has a dual-brake system as well, though its specific brake type (mechanical disc vs. hydraulic) isn't as prominently detailed. Where the Kullter gains ground is its UL 2272 safety certification, a recognized US standard for personal electric mobility devices covering electrical and fire safety. The ES9 does not list a comparable certification. The Kullter's 360° LED lighting with adjustable colors also provides better night visibility than the ES9's standard lighting setup.
Winner: Tie. The ES9 has superior braking hardware; the Kullter Max has UL 2272 certification and better lighting. Both are strong in different aspects of safety.
Price and Value
At $889 on sale (down from $1,399), the Kullter Max is $610 less than the $1,499 ES9. That's a significant gap. The average electric scooter in 2026 costs around $1,113 based on RiderGuide's database of 352 models, so the Kullter Max sits well below the market average while the ES9 sits above it.
The ES9 justifies its premium with more powerful motors, a larger battery, longer range, and hydraulic brakes. But if your budget is tight and you don't need the extra range or raw power, the Kullter Max delivers a lot of scooter for under $900.
Winner: REYWMER KULLTER (on pure price-to-feature ratio at the current sale price)
Build Quality and Long-Term Ownership
The Kullter Max uses a high-strength aluminum alloy frame tested for durability, with a generous 300 to 330 lb weight capacity. The ES9 is built around its foldable design for portability, which is a real advantage for commuters who need to carry their scooter onto public transit or store it under a desk.
Both scooters benefit from something most competitors can't match: we stock spare parts for both lines right here at WocoMotors. Batteries, motors, controllers, tires, brakes, chargers; everything you need to keep your scooter running for years. That parts availability is a genuine ownership advantage, because finding replacement components for off-brand scooters can be a headache.
Winner: Tie. Both are well-built, both have full parts support. The ES9 wins on portability; the Kullter wins on weight capacity.
The Verdict
Choose the ROCRUN ES9 if you're primarily a city commuter who wants maximum range, top-tier motor power, hydraulic brakes, and a foldable frame you can carry into the office. It's our best pick for riders who log serious miles on paved roads and want a scooter that won't run out of juice halfway through the day. At $1,499, it's a premium investment, but the specs back it up.
Choose the REYWMER KULLTER (Kullter Max) if you ride mixed terrain, want full dual suspension for rough roads and trails, or simply want a capable 50 mph scooter at a more accessible price. At $889 on sale, it's hard to argue with the value. The 360° LED lighting and UL 2272 certification are nice bonuses, and the off-road pneumatic tires open up riding possibilities the ES9 isn't designed for.
For most urban commuters who prioritize range and power, the ROCRUN ES9 is the scooter we'd recommend. But if adventure riding or budget is your top priority, the Kullter collection gives you a genuinely excellent alternative from the same store, with the same parts and support backing it up.