Name: REAL MOSFET Upgrade Regulator Rectifier (Reg Rec) - Various Hyosung DELPHi 2016-2019 Models
SKU: 32800HN9121-DELPHiV2_BIG_PLUG
Availability: InStock

REAL MOSFET Upgrade Regulator Rectifier (Reg Rec) – Various Hyosung DELPHi 2016-2019 Models

Estimated delivery dates: May 11, 2026 - May 12, 2026

£99.00

⏳ LIMITED RUN | 🤍 HYORIDERS’s SPECIAL

Protect your Delphi ECU. Generic “Cheap Chinese ” regulators are notorious for voltage spikes that fry expensive Delphi ECUs. This HyoRiders solution is a **Genuine Shingden Japan MOSFET**, specifically for the 2016–2020 “Big Plug” generation.

✅ Proper Engineering: Includes UK-made “Plug & Play” harness for the required “Big Plugs.”
⚡ Shingden Reliability: Tested, upcycled Japanese regulator runs cooler than factory shunt units.
🛡️ ECU Protection: Stable voltage is non-negotiable for Delphi electronics.

🚚 SPECIAL ORDER PROCESS:
Each harness is hand-built and tested in the UK. Please allow up to 10 working days for careful assembly and testing before dispatch.
✔ THIS PAGE IS STRICTLY FOR “2016-2020” MODELS WITH A DELPHI ECU USING “BIG” PLUGS!

🎥 VIDEO TEST RUN (Thanks @Gabor!)

Description

The charging system in 2016–2020 Hyosung models relies on a healthy regulator. When the factory ‘Shunt’ regulator fails, it sends unstable voltage that can fry your expensive Delphi ECU. This **MOSFET Regulator Upgrade** is engineered to provide stable, clean power and break that failure cycle.

You are investing in insurance for your bike’s electronics. We use **Shingden Japan** hardware which runs cool and protects your bike’s brain.

⚠️ IMPORTANT FITMENT CHECK: “THE BIG PLUGS”

Hyosung changed the connectors significantly during the 2016 model year. This kit is ONLY for models with the large-format “Big Plugs” (pictured below👇).

✅ FITS: Hyosung GV250 / GT250 / GT650 / GV650 / GD250R / GD250N / ST7 (GV700i)
(2016–2020 Delphi ECU Models).
❌ WILL NOT FIT: Pre-2016 models with smaller connectors.
👉 For Older 250cc 2008–2015 owners: Click here for the Small Plug Kit.

Hyosung Big Plug Connector Check

☝️ Your bike’s harness MUST have these FEMALE connectors to accept our kit!
If you cannot see them please contact us first, we may also help you with fresh connectors for the FEMALE side
Sometimes you could be a new owner and not realize the previous owner has cut the plugs and put the wrong ones (for whatever reason!)

📦 What’s Included?

1x Genuine Shingden MOSFET Regulator: Upcycled, bench-tested, and world-renowned for stability.
1x HyoRiders “Plug & Play” Harness: Custom-built in the UK to bridge the Shingden unit to your factory “Big Plugs.”
1x Time-Limited Warranty included.

🛠 Installation & Battery Health Advice (Avoid Stator Burn)

A new regulator is a great start, but system health is non-negotiable:

🔋Battery Condition: A weak battery will instantly stress any new regulator/stator system. Get a PROPER LOAD TEST at [Halfords UK] or a local mechanic. A basic multimeter cannot measure a battery’s health under load.
Check Your Stator Health: If your old regulator failed, it likely damaged your stator. Test your stator before fitting this new regulator!
Clean Connections: Use [ACF-50] or high-temp dielectric grease on all connectors.
🔥 NEVER use WD-40: WD-40 is flammable on electrical wires. Using it risks a harness fire.

OEM Reference: 32800HN9120 & 32800HN9121

Need technical 250cc manuals? Download the 250cc Service Manuals here.