Topgear Power (特百佳动力) Commercial EV Powertrains & 4AMT Transmissions: TS-0425C Gearboxes, TZ400XSTPG / TZ310XSTPG Motors, 3-in-1 Drives, e-Axles & PDUs

Supply complete 3-in-1 integrated central electric drives, dual-motor powertrains, 4AMT automated manual transmissions (TS-0425 / TS-0425C), TZ400XSTPG, TZ388XSTPG, TZ310XSTPG, TZ230XSTPG, and TZ210XSTPG permanent magnet synchronous motors, integrated electric drive axles (e-Axle), HEV/PHEV hybrid systems, and high-voltage PDUs from Topgear Power (Shanghai Topgear Power Technology Co., Ltd. / 特百佳动力科技股份有限公司).

Topgear Power 4AMT & TS-0425C Series Automated Manual Transmissions (2AMT, 4AMT, 6AMT — Up to 21000 N·m)

The Topgear Power 4AMT series automated manual transmissions (including the core TS-0425 / TS-0425C platform as well as 2AMT and 6AMT configurations) are purpose-built for heavy-duty battery-electric semi-tractors, mining and construction dump trucks, concrete mixers, and specialty chassis rated at

31–49 t GCW. Introduced in 2019 as China's first dedicated 4-speed EV heavy-truck transmission, the 4AMT keeps the traction motor in its peak efficiency band while delivering up to 21000 N·m output torque for steep gradeability and multi-stage regenerative braking.

AMT transmission lineup: flagship 4-speed 4AMT series (TS-0425 / TS-0425C), compact 2-speed 2AMT units for medium-duty chassis, and 6-speed 6AMT gearboxes for long-haul and mountain tractors
Torque & speed ratings: matched with high-speed PMSM motors up to 3400–3500 rpm, delivering up to 21000 N·m combined output torque for 31–49 t heavy commercial vehicles
Intelligent shift actuation: integrated TCU with electro-pneumatic and electro-mechanical gear shift actuators and grade-and-load adaptive shift scheduling
Replacement parts & spares: complete TS-0425C shift actuators, TCU control units, input/counter/output shafts, gear sets, sliding sleeves, bearings, and speed sensors

Topgear Power 3-in-1 Integrated Central Drives & Dual-Motor Powertrains (330 kW Rated, 460–520 kW Peak)

In 2020, Topgear Power pioneered the industry's first intelligent 3-in-1 central electric drive assembly for heavy-duty trucks, integrating a high-speed traction motor, a 4AMT automated transmission, and a power controller into a single compact unit.

For severe-duty prime movers and mining dumpers, Topgear Power produces the dual-motor coupled system ('High-Speed Dual Motor + 4AMT + Multi-in-1 Controller') delivering 330 kW rated power and 460–520 kW peak power with torque-fill shifting.

3-in-1 central drive architecture: deep mechatronic integration of PMSM traction motor, 4AMT gearbox, and inverter controller, reducing curb weight and external high-voltage cabling
Dual-motor coupled powertrain (Dual-Motor + 4AMT): 330 kW rated power, 460–520 kW peak power, up to 21000 N·m output torque, and dynamic dual-motor torque allocation
Uninterrupted traction & efficiency: coordinated dual-motor shifting prevents speed drop on steep quarry haul roads while lowering kWh/km energy consumption
Central drive spares: complete replacement drive assemblies, coupling sleeves, propeller shaft companion flanges, liquid-cooling manifolds, and HV harness connectors

Topgear Power TZ400XSTPG Series Heavy-Duty PMSM Traction Motors (220–260 kW Rated, 360–400 kW Peak)

The Topgear Power TZ400XSTPG / TZ400 series of heavy-duty permanent magnet synchronous motors (including models TZ400XSTPG04, TZ400XSTPG06, TZ400XSTPG11, TZ400XSTPG46, and TZ400XSTPG60 bearing the MIIT manufacturer code TPG) serves as the primary traction unit for 31–49 t battery-electric,

battery-swapping, and fuel-cell heavy trucks. Built on a 400 mm stator frame, the motor utilizes flat-wire Hairpin copper windings and liquid or oil cooling.

TZ400XSTPG (TZ400) variants: TZ400XSTPG04, TZ400XSTPG06, TZ400XSTPG11, TZ400XSTPG46, and TZ400XSTPG60 deployed on SANY, XCMG, Foton, Sinotruk, Shacman, Beiben, and CAMC electric heavy trucks
Power & speed specifications: 220–260 kW rated power (300–350 hp), 360–400 kW peak power (490–544 hp), and 3400–3500 rpm maximum operating speed
Torque & ingress protection: 1500–1600 N·m rated torque, 2100–2800 N·m peak torque, high-slot-fill flat-wire Hairpin stator, and IP67 / IP68 enclosure protection
TZ400 motor spare parts: complete stators and rotors, rotor position resolvers, PT100 / NTC winding temperature sensors, ceramic-insulated bearings, shaft seals, and end bells

Topgear Power TZ388XSTPG, TZ310XSTPG, TZ230XSTPG, TZ210XSTPG & TM Series Medium/Light Traction Motors

For medium-duty commercial chassis, municipal sanitation trucks, port terminal tractors, city buses, and electric power take-off (e-PTO) systems, Topgear Power manufactures the TZ388XSTPG (TZ388), TZ310XSTPG (TZ310), TZ230XSTPG, and TZ210XSTPG (TZ210) permanent magnet synchronous motor families

alongside TM-series AC induction motors. These compact frames combine low weight with high torque density for urban stop-and-go and regional distribution cycles.

Medium-to-heavy TZ388XSTPG (TZ388) & TZ310XSTPG (TZ310) series: 165–200 kW rated power and 240–300 kW peak power for 12–25 t trucks, port tractors, and sanitation vehicles
Compact TZ230XSTPG & TZ210XSTPG (TZ210) series: lightweight liquid-cooled PMSM motors for light commercial trucks, buses, and hydraulic e-PTO superstructure drives
TM-series induction motors: rugged AC asynchronous traction and auxiliary motors engineered for hybrid powertrains and special-purpose off-highway machinery
Replacement components for TZ388 / TZ310 / TZ210: rotor assemblies, water-jacket housings, splined output hubs, resolver sensors, terminal boxes, and shaft seal kits

Topgear Power Integrated Electric Drive Axles (e-Axle — 11.5–16 t Axle Load, 2/4-Speed Reduction)

Pursuing its dual-track strategy of 'Central Drive + Electric Axle', Topgear Power engineers and manufactures coaxial and parallel-axis integrated electric drive axles (e-Axle) for long-haul tractors, port drayage trucks, urban logistics vehicles, and mining dumpers.

Integrating the high-speed PMSM motor and multi-speed reduction gearbox directly into the axle housing frees up frame rail space for larger traction battery packs.

e-Axle load ratings & layouts: single-motor and dual-motor integrated drive axles rated for 11.5 t, 13 t, and 16 t axle loads across 4×2, 6×4, and 8×4 truck chassis
Weight saving & packaging: eliminating the central propeller shaft reduces chassis curb weight by 150–300 kg and clears frame space for bottom-mounted battery packs and gas cylinders
Axle gearing & traction control: built-in 2-speed or 4-speed helical/planetary reduction with shift actuators, wheel-end hub reduction, and electronic differential lock
e-Axle service parts: axle traction motors, main and hub reduction gear sets, half-shafts, wheel hub assemblies, differential lock actuators, and oil seals

Topgear Power HEV / PHEV Hybrid Powertrains & Electro-Mechanical Drive Systems

For long-haul highway tractors, heavy mobile cranes, mining dump trucks, and construction machinery operating in regions with limited charging infrastructure, Topgear Power produces parallel P2 and series-parallel hybrid powertrains (HEV / PHEV) and range-extender drive systems.

Combining a hybrid-dedicated AMT gearbox, high-efficiency generator, traction motor, and HCU/VCU supervisory controller, the system cuts diesel or LNG fuel consumption by 15–30%.

HEV / PHEV powertrain topologies: parallel P2 and series-parallel electro-mechanical hybrid transmissions engineered to pair with heavy-duty diesel and natural gas (LNG/CNG) engines
Integrated generation & traction: combines an ISG generator with GCU inverter, automated clutch module, multi-speed AMT gearbox, and PMSM traction motor
HCU supervisory control: dynamic torque split between ICE and electric drive, brake energy recuperation, and emission-free electric operation of crane/mixer superstructures
Hybrid system spare parts: motor-generator units, hybrid clutch modules and concentric slave actuators, GCU generator inverters, HCU controllers, and torsional dampers

Topgear Power High-Voltage Intelligent PDUs (300–800 V DC) & Multi-in-1 Integrated Controllers

For commercial EV high-voltage power electronics architectures, Topgear Power manufactures High-Voltage Intelligent Power Distribution Boxes (PDU) and Multi-in-1 integrated controllers.

Designed for 300–800 V DC heavy-truck platforms, these units manage power routing from the traction battery to the main motor inverter (MCU), electric power steering pump, air brake compressor, A/C compressor, PTC heater, and DC/DC converter.

High-voltage intelligent PDU: 300–800 V DC operating range, integrated main positive, main negative, and pre-charge HV contactors, fast-acting EV fuses, and Hall-effect current sensors
Active HV safety protection: continuous insulation resistance monitoring, overcurrent, short-circuit, and overvoltage protection with millisecond-level fault circuit interruption
Multi-in-1 integrated controllers: combines the main traction inverter (MCU), vehicle control unit (VCU), transmission controller (TCU), and DC/DC converter in an IP67 / IP68 liquid-cooled housing
Power electronics spares: complete PDU boxes and MCU inverters, HV contactors, pre-charge relays and resistors, EV high-voltage fuses, insulation monitoring boards, and HVIL connectors

Topgear Power 4AMT Shift Actuators, Gear Shafts, Resolvers, Sensors & Genuine Maintenance Spares

To maintain fleet uptime for electric semi-tractors, mining dumpers, and mixer trucks (XCMG, SANY, Foton, Sinotruk, Shacman, Beiben, CAMC, Dongfeng), we supply the complete range of genuine replacement parts and overhaul kits for Topgear Power powertrains.

Part identification is performed directly by motor nameplate code (`TZ400XSTPG...`, `TZ310XSTPG...`), gearbox serial (`TS-0425C`), or OEM part number.

4AMT (TS-0425C) gearbox overhaul parts: complete XY gear shift actuators, solenoid valves, rail position sensors, input/counter/output shafts, helical gear sets, and synchronizer sleeves
Traction motor sensors & bearings: high-precision rotor position resolvers, PT100 and NTC stator temperature probes, electrically insulated rotor bearings, and high-speed lip seals
Cooling & HV harness hardware: water/oil cooling jackets, transmission oil coolers, shielded high-voltage cable glands, and HVIL-interlocked mating connectors
Preventive maintenance kits: 4AMT transmission gasket and O-ring seal kits, gearbox lubrication filter elements, output companion flanges, and powertrain mounting brackets

Identifying Topgear Power (特百佳动力) Traction Motors, 4AMT Transmissions, and Controllers by Model Code

Founded on May 30, 2016 in Shanghai (Building 2, No.

8158 Tingwei Highway, Jinshan Industrial Zone), Topgear Power (特百佳动力科技股份有限公司 / Shanghai Topgear Power Technology Co., Ltd., abbreviated TBJ) is a national "Little Giant" enterprise specializing in electric and hybrid powertrains for heavy-duty commercial vehicles.

Motor models follow the Chinese MIIT standard with manufacturer code TPG.

In motor codes (such as TZ400XSTPG04, TZ400XSTPG06, TZ400XSTPG11, TZ400XSTPG46, TZ388XSTPG, TZ310XSTPG, TZ230XSTPG, TZ210XSTPG), TZ denotes a permanent magnet synchronous traction motor (TM denotes an AC induction motor), 400 / 388 / 310 / 230 / 210 indicates the stator outer diameter in mm (400 mm

for the TZ400 series), XS denotes liquid cooling, TPG identifies Topgear Power, and the suffix specifies the power/torque calibration.

When ordering replacement parts, provide the motor nameplate code (TZ400XSTPG...), gearbox model (TS-0425, TS-0425C, 4AMT, 2AMT, 6AMT), 3-in-1 drive serial number, or PDU / MCU controller part number.

Selecting Powertrain Architectures: 3-in-1 Central Drives, Dual-Motor 4AMT Systems, and e-Axles

For 31–49 t battery-electric and battery-swapping semi-tractors, mining dumpers, and mixer trucks, the standard solution is the 3-in-1 central drive combining a TZ400XSTPG motor (220–260 kW rated, 360–400 kW peak, 1500–2800 N·m torque, 3400–3500 rpm) with the TS-0425C 4-speed automated manual

transmission (4AMT), delivering up to 21000 N·m output torque.

For severe mountain grades and heavy mining haulage, the dual-motor coupled assembly ("High-Speed Dual Motor + 4AMT + Multi-in-1 Controller") provides 330 kW rated power and 460–520 kW peak power with torque-fill shifting.

For chassis with frame-mounted battery packs and gas cylinders, integrated electric drive axles (e-Axle) rated at 11.5–16 t axle load with 2- or 4-speed gearing reduce curb weight by 150–300 kg by eliminating the propeller shaft.

Configuring High-Voltage Intelligent PDUs (300–800 V DC) and Multi-in-1 Controllers

Topgear Power high-voltage power electronics operate across 300–800 V DC commercial EV platforms.

The High-Voltage Intelligent PDU integrates main positive, main negative, and pre-charge HV contactors, fast-acting EV fuses, Hall current sensors, and real-time insulation monitoring with millisecond fault interruption.

Multi-in-1 integrated controllers combine the traction motor inverter (MCU), vehicle control unit (VCU), transmission controller (TCU), DC/DC converter, and auxiliary drives (steering pump and air compressor) inside an IP67 / IP68 liquid-cooled enclosure.

For long-haul tractors and mobile cranes using HEV / PHEV hybrid systems (including P2 layouts), matched kits including an ISG generator, GCU inverter, hybrid clutch module, and HCU supervisory controller achieve 15–30% fuel savings.

Servicing 4AMT (TS-0425C) Gearboxes, TZ-Series Motors, and Preventive Maintenance Spares

High-speed TZ400XSTPG and TZ310XSTPG flat-wire Hairpin motors and TS-0425C transmissions require clean coolant circulation and scheduled gearbox oil and filter replacement. If shift actuator response slows or air leaks occur, inspect the XY shift actuator seals and solenoid valves.

In case of MCU phase synchronization faults or winding overheat alarms, verify the rotor position resolver, PT100 and NTC stator temperature sensors, and ceramic-insulated rotor bearings.

We supply replacement TS-0425C shift actuators, TCU units, 4AMT shafts, gears, and synchronizer sleeves, TZ400 / TZ388 / TZ310 / TZ210 stators and rotors, PDU contactors and fuses, and HVIL-interlocked connectors.

International Supply of Complete Topgear Power Powertrains and Genuine Spare Parts

SpareX supplies Topgear Power traction motors (TZ400XSTPG, TZ310XSTPG, TZ210XSTPG), 4AMT gearboxes (TS-0425C), 3-in-1 central drives, e-Axles, PDU boxes, MCU controllers, and genuine spare parts from Shanghai Topgear Power Technology (China) worldwide.

Engineers assist with nameplate verification across XCMG, SANY, Foton, Sinotruk, Shacman, Beiben, CAMC, and Dongfeng electric truck fleets and arrange air, rail, or sea delivery.

System configurations, factory lead times, and export pricing for Topgear Power (Shanghai Topgear Power Technology) 3-in-1 central drives, 4AMT transmissions (TS-0425C), TZ-series traction motors, e-Axles, PDUs, and spare parts are calculated individually upon technical inquiry; public retail price

lists are not published. We operate as an independent international industrial supplier and are not an exclusive distributor of the manufacturer.