GT73 Pro Electric Motorbike (60V Dual Battery 18Ah×2, 3000W Peak, 338 N·m, 25” Off-Road Tires)

GT73 Pro Electric Motorbike — 338 N·m. 2,160 Wh Dual 60V Battery. 60V Architecture.

The standard GT73 delivers 126 N·m through a 48V dual-battery platform. The GT73 Pro delivers 338 N·m through a 60V platform — the same peak torque as the GT54 Pro mini-motorbike, now on the full-size 25″ off-road wheel chassis. That torque number is the first thing to understand about this machine, because 338 N·m changes what the GT73 platform is capable of on a steep, loose, or muddy access road. The 3,000W peak geared rear hub motor is backed by 2,160 Wh of dual 60V battery — 413 Wh more than the standard GT73 — and the 67.2V 3A chargers take each pack from empty in 5–6 hours rather than the 9–10 hours the GT73’s 2A chargers require. At 123 lbs, the Pro is 7 lbs heavier than the standard GT73. Every one of those pounds carries a reason.

The GT73 Pro shares the same 25″ 70/100-19 off-road motorcycle tires on 7074 aluminium alloy rims, the same aluminium hydraulic front fork, and the same motorbike-style chassis as the standard GT73 — but replaces the braking spec with dual front hydraulic disc brakes and a rear hydraulic disc, all with confirmed 230mm rotors and EABS Electronic Anti-lock Braking System. At 72 km/h on a 123 lb machine, that braking specification is not an upgrade option — it is what the machine demands. The 60V 40A Fardriver integrated controller, 3× LED headlights, key start ignition, and 5″ LED display complete a spec set that is materially different from the standard GT73, not incrementally improved.

Why 338 N·m on a Full-Size Platform Changes the Calculation

Torque is the variable that determines behaviour on a hill, not top speed. On a loose gravel access road at 15% grade, the difference between 126 N·m and 338 N·m is whether the rear wheel spins out or climbs. On a standing start on wet grass or soft ground, 338 N·m is what gets the machine moving without drama. The GT73 Pro delivers the same peak torque as the GT54 Pro mini-motorbike — but the GT54 Pro achieves it on 14″ and 12″ wheels. The GT73 Pro delivers it on the full-size 25″ motorcycle-format platform.

The 60V architecture behind that torque number also matters beyond the headline spec. At the same 40A controller rating, 60V delivers 2,400W continuous vs 48V’s 1,920W at the same current. More power at lower current means less heat generated in the motor windings and controller under sustained hard use — the kind of heat that degrades performance on a long climb or repeated standing starts on a trail. The Fardriver controller at 60V 40A is a recognised name in high-performance eBike controller hardware; this is not a generic off-the-shelf unit.

• 2,160 Wh — more stored energy than the GT73, faster to charge. Dual 60V 18Ah batteries total 2,160 Wh combined. Riding Times publishes 130 km throttle-only range and 170 km in pedal assist. Both batteries are removable for indoor charging. The 67.2V 3A chargers — one per battery, both included — charge each pack in 5–6 hours from empty, rather than the 9–10 hours required by the GT73’s 2A chargers. Running both chargers from separate outlets simultaneously, both packs charge overnight. For consecutive riding days, starting both chargers immediately after your ride means both are full before morning. eBike battery and winter riding guide for Canada →
• UL 2849 compliant battery system. The battery system carries UL 2849 certification — the North American standard for eBike electrical system safety covering cell-level protection, BMS behaviour, and fire risk. At 2,160 Wh across two 60V packs, this certification is not a checkbox.
• Dual front hydraulic disc + EABS — 230mm rotors confirmed. The GT73 Pro publishes specific rotor dimensions where the standard GT73 does not: 230mm front (dual calipers on the front wheel) and 230mm rear, with EABS Electronic Anti-lock Braking System. At 72 km/h on a 123 lb machine, the braking specification is not optional equipment — it is what the machine requires. Full electric dirt bike guide for Canada (2026) →
• Snow Track Kit available. Select the GT73 Pro + Snow Track Kit variant at checkout to add the winter rear-wheel track conversion. 2,160 Wh of 60V dual battery is the most stored energy in the Zeus GT motorbike line — meaningful in Canadian winter when cold temperatures derate lithium capacity. The Snow Track Kit at purchase is the correct configuration for riders planning full-season snow riding from day one.

Key Features

• 3,000W Peak Geared Rear Hub Motor — 338 N·m Torque — A rear geared hub motor peaking at 3,000W under hard acceleration with 338 N·m of torque delivered through the full-twist throttle or cadence-based pedal assist. Geared hub motors use an internal gear reduction mechanism that allows smaller, lighter motors to produce higher torque at low speeds than direct-drive units — relevant on standing starts, steep climbs, and loose terrain where the motor works hardest. 338 N·m on the full-size 25″ platform is the specification that defines what the GT73 Pro is. How hub motors compare to mid-drives →
• Dual Removable 60V 18Ah Batteries — 2,160 Wh Total — UL 2849 — Two independent 60V 18Ah packs, each removable for indoor charging. Combined capacity of 2,160 Wh — 413 Wh more stored energy than the GT73’s dual 48V system. UL 2849 certified. Both packs and both 67.2V 3A chargers included in base price. Each battery charges in 5–6 hours from empty. For Canadian winter, remove both packs and store at room temperature overnight before cold-weather rides — lithium cells lose capacity to cold and recover when kept warm before discharge.
• 60V 40A Fardriver Integrated Controller — The GT73 Pro publishes the controller specification: Fardriver 60V 40A, integrated into the chassis. Fardriver is a recognised manufacturer of high-performance eBike and electric motorcycle controllers. At 60V 40A, continuous power delivery is 2,400W — the same as the GT73’s peak. The integrated layout simplifies the electrical architecture and reduces failure points versus externally-mounted controller boxes.
• Dual Front Hydraulic Disc Brakes — 230mm Rotors — EABS — Two separate hydraulic disc calipers on the front wheel, each with a 230mm rotor, plus a single 230mm rear hydraulic disc. EABS (Electronic Anti-lock Braking System) modulates brake pressure under hard stops on loose or low-traction surfaces to prevent wheel lock. At 72 km/h on a gravel access road, ABS is the difference between a controlled stop and a low-side slide. This is the most significant safety hardware upgrade the GT73 Pro carries over the standard GT73.
• Aluminium Hydraulic Suspension Fork (Front) — 1,200 lb Hydraulic Rear Shock — The published suspension specifications: aluminium hydraulic front fork and a 1,200 lb load-rated hydraulic rear shock absorber. The rear shock rating is the compression load capacity of the hydraulic unit — relevant for a heavier rider on a high-power machine on rough terrain where shock loading can be substantial. Combined with the 25″ 70/100-19 motorcycle-format tyres, the suspension is built to absorb the loads generated by a 338 N·m motor on variable-traction surfaces.
• 25″ Off-Road Motorcycle Tires — 70/100-19 — 7074 Aluminium Rims — Same 70/100-19 motorcycle off-road tyre on 7074 aluminium alloy rims as the standard GT73. Tall sidewall, narrow motorcycle-format profile, 19″ rim diameter. The tread is built for loose surfaces, not tarmac; the compound is wear-resistant for mixed-surface use on trails and access roads.
• Full-Twist Throttle — Motorcycle-Format Control Interface — Full-twist (not half-twist as on the standard GT73), matching the control interface of a small electric motorcycle. Full-twist provides progressive torque modulation through wrist rotation — the precision range matters on 338 N·m for low-speed manoeuvring and technical situations on trail. The GT73 uses a half-twist; the Pro uses a full-twist.
• Key Start Ignition (Anti-Theft) — The GT73 Pro does not power on without the key. For a 123 lb machine stored in a shared garage, yard, or trail parking area, the key ignition is the first layer of theft deterrence independent of any external lock. The free Zeus Security & Starter Kit included with every order provides a heavy-duty U-lock as the second layer.
• 5″ LED Display — Larger format than the standard GT73’s LED display. A 5″ display is more legible at speed and in direct sunlight — relevant for a machine used on outdoor access roads at 50–70 km/h rather than urban streets where speeds are lower and stops more frequent.
• 3× LED Headlights — Three LED headlight units vs one on the standard GT73. For early-morning or late-evening backcountry access where the trail ahead is the only visible reference, triple headlights extend the illuminated sight-line and reduce target fixation on a single bright spot.
• Cadence Sensor Pedal Assist — Motor assist triggers when the cadence sensor detects pedal rotation. The assist level is determined by the PAS mode selected. On 338 N·m, cadence-sensor engagement at higher PAS levels is aggressive — this is addressed directly in the Honest Take below. The full-twist throttle provides direct motor control independent of the PAS system at any time.
• IPX4 Water Resistance — Splash-resistant from all directions. Suitable for rain, shallow water crossings, and wet trail conditions. Not submersion-rated. Rinse battery contacts and charging ports after wet outings, particularly in muddy conditions.

Everything in the Box

• GT73 Pro Electric Motorbike — partially assembled
• Two (2) removable 60V 18Ah lithium batteries — UL 2849 compliant
• Two (2) 67.2V 3A smart chargers — one per battery
• Full-twist throttle — pre-installed
• Full LED lighting system: 3× LED headlights, rear tail light, turn signals (L & R), 2-in-1 brake/turn light
• 5″ LED display — pre-installed
• Key start ignition with keys — pre-installed
• Assembly tools and owner’s manual
• Free Zeus Security & Starter Kit — mirrors, anti-theft alarm, heavy-duty U-lock, universal phone holder

Snow Track Kit variant: Select “GT73 Pro + GT73 Snow Track Kit” at checkout to add the winter rear-wheel track conversion. For Canadian riders planning winter riding in snow, configuring the kit at purchase keeps the full spec set together from day one.

Final assembly required. The GT73 Pro ships partially assembled. Follow the included setup guide or call 1-866-938-7580 before your first ride — we will walk through the final assembly steps with you live.