Verdict: the Dualtron Thunder 4 is the purer race tool: a 72V dual-motor platform tuned for outright top speed, CBS-linked 4-piston braking and a longer dual-charger path back to full. The Rovoron S7 answers with an 84V architecture, a bigger 3,116 Wh battery, faster claimed acceleration and a lower weight, at a more accessible price. Choose the Thunder 4 for absolute velocity and braking hardware; choose the S7 for voltage headroom, range and value.
Telemetry comparison
Both machines sit at the top of their respective ranges. The headline difference is architectural: the S7 runs an 84V system with a 3,116 Wh pack, while the Thunder 4 runs 72V at 2,880 Wh. Higher voltage delivers current to the motors with less thermal loss, which shows up in the S7's stronger claimed acceleration. The Thunder 4 counters with the higher manufacturer-claimed top speed and a dual-charger option that halves its charge time.
| Specification | Dualtron Thunder 4 | Rovoron S7 |
|---|---|---|
| System voltage | 72V | 84V |
| Motor (rated) | Dual 2,500W hub | Dual 2,500W hub |
| Peak output | 11,800 W combined | 11,500 W combined |
| Battery | 72V 40Ah — 2,880 Wh | 84V 37.1Ah — 3,116 Wh |
| Top speed (manufacturer claim) | 110 km/h | 105 km/h |
| Range (manufacturer claim) | Up to 125 km | Up to 140 km |
| Charging | ~8 h standard / ~4 h dual charger | ~18 h standard / ~9 h fast charger |
| Brakes | CBS 4-piston hydraulic, front and rear | 4-piston hydraulic, front and rear |
| Suspension | Spring-washer tunable, front and rear | Modular elastomer, front and rear |
| Weight | 53.5 kg | 49.5 kg |
All figures are manufacturer specifications as listed on our product pages; top speed and range claims assume private land use and rider conditions we cannot verify.
Controls and telemetry: EY4 against Rovoron's deck
Dualtron's EY4 display ecosystem is the more developed of the two. The EY4 unit pairs with Minimotors' smart app over Bluetooth and gives you per-mode throttle response mapping, adjustable regenerative braking strength, per-motor power bias and live telemetry: voltage sag, current draw, battery percentage and temperature readouts on the dash. Riders who want to log how the machine behaves across a session will get more out of the Thunder 4.
The S7 keeps its control logic simpler. Its LCD covers speed, battery state and ride mode, and drive settings are adjusted on the deck. What it lacks in app depth it gains back in directness: fewer layers between you and the machine. Regen braking and mode switching are set once and largely forgotten.
If telemetry logging and fine-grained throttle mapping matter to you, the EY4 platform wins on capability. If you want to ride rather than configure, the S7 asks less of your phone.
Braking and high-speed stability
At these power levels the brakes are the deciding hardware. The Thunder 4 runs a CBS-linked 4-piston hydraulic setup front and rear: the linked system distributes braking force between both axles, which keeps the rear from skidding when you brake hard from speed. The S7 runs unlinked 4-piston hydraulic discs front and rear, with identical caliper specification but without the CBS linkage, so the rider manages front-to-rear bias by hand.
Suspension character differs more than the spec sheet suggests. The Thunder 4's spring-washer suspension is step-adjustable for preload, so you can firm it up for heavier riders or rebound-tune it for high-speed stability. The S7's modular elastomer suspension is more compliant out of the box, trading a little high-speed tautness for comfort on broken surfaces. Stopping distances at these weights are hardware-bound, not marketing claims; we publish verified disc sizes and caliper counts on both product pages so you can compare like for like.
Regulatory and safety notice
Both scooters are high-power performance vehicles, not commuter machines. In Ireland, electric scooters are legal on public roads only up to 400W continuous and 20 km/h under S.I. 199/2024. The Thunder 4 and Rovoron S7 both exceed this classification by an order of magnitude and are sold for private land and closed-course use only. The same restriction applies across most of Europe. Full protective equipment is non-negotiable at the speeds these machines reach.
