Stator
TWH stator assemblies are developed to match designated scooter models, providing reliable ignition and power generation support. Each unit is built for proper fitment and long-term functionality.
DIO 50 High Rotational Speed Alternator Assy
Stable Output • Efficient Cooling • Lightweight Design
⚡️ Stable power at high RPM — built for performance.
The DIO High Rotational Speed Alternator Assy delivers reliable electrical output even under extended high-RPM riding. Paired with a lightweight cooling fan (119mm outer diameter, 55g weight), this setup reduces rotational mass while improving airflow and thermal control — helping your engine spin freely and perform more consistently.
🔹 Consistent power generation at high RPM
🔹 Lightweight fan included – 119mm outer diameter, 55g
🔹 Improved cooling – Helps reduce heat buildup and extend durability
🔹 Fits DIO applications – Ideal for high-RPM tuning or daily upgrade
Video: https://youtu.be/VUWXI8pi1oA
JOG 90 High Rotational Speed Alternator Assy
Stable charge at revs. Cooler airflow. Plug-in fit.
This High Rotational Speed Stator Assembly for Yamaha JOG 90 replaces the stock coil pack with a high-rpm-ready stator and includes a matching alternator fan. Heat-resistant windings and a tight lamination stack help maintain charging output and a clean pickup signal at elevated RPM, while the fan pushes fresh air through the shroud to temper cylinder/head temps in stop-and-go riding.
Highlights
High-RPM Output Stability — Consistent AC charge and pickup triggering across the rev range.
Heat-Resistant Build — High-temp enamel wire and upgraded insulation stand up to under-cowl heat.
OEM-Fit Backing Plate — Bolt pattern and harness routing follow stock geometry for straightforward install.
Cooling Airflow Fan — Drives air through the shroud for steadier temperature control.
Harness Compatibility — Designed to work with the stock rotor/flywheel, CDI, and regulator* (*check your model’s plug type and system).
Product Specifications
✔ Type: High Rotational Speed Stator Assembly (AC magneto)
✔ Fitment: Yamaha JOG 90
✔ Contents: Stator Coil Assembly ×1 (with output leads/connector), Alternator Fan ×1
✔ Note: Rotor/Flywheel not included (reuse OEM)
Installation Notes
Remove the flywheel/rotor with the correct puller to access the stator; route the harness clear of moving parts.
Set pickup (trigger) coil air gap to spec (if equipped) and verify timing mark alignment.
Install the fan with the correct rotation/orientation; check shroud/cover clearance.
Torque fasteners to spec; start the engine and confirm charging voltage and spark stability at idle/mid-RPM.
After a short heat cycle, recheck fastener torque and the grommet seal for leaks or chafing.
Power You Can Trust.