Universal Parts GY6 Performance CDI - AC Ignition

Eliminate the factory rev limiter and let your engine reach its full potential with the Universal Parts GY6 Performance Racing CDI. Designed specifically for AC-fired GY6 50cc, 125cc, and 150cc engines, this unit removes the electronic RPM ceiling and features a re-mapped ignition advance curve for sharper throttle response, improved acceleration, and a potential top-speed increase of 5–10 MPH on most stock and modified machines.

Housed in a gold anodized aluminum finned heat-sink case labeled “New Racing C.D.I” with a printed advance curve chart. Connects via the standard 6-pin (4+2) green rounded male plug — plug-and-play on most Chinese-style GY6 wiring harnesses.

Important: This CDI is compatible with AC-fired electrical systems only. Verify your system type before ordering — if your scooter has a battery-dependent ignition (DC), this unit will not work.

Key Features

• Unrestricted Rev Limit: Removes the factory RPM ceiling — essential for big-bore and high-cam builds.
• Optimized Advance Curve: Re-mapped ignition timing for a hotter, more precise spark at higher RPMs and maximum combustion efficiency.
• Gold Anodized Aluminum Housing: Finned heat-sink case dissipates heat and withstands vibration and thermal stress of high-performance riding.
• Plug-and-Play: Standard 6-pin (4+2) green rounded male connectors for tool-free installation on most GY6 Chinese wiring harnesses.

Fitment Guide

• GY6 50cc (QMB139): TaoTao, Wolf, Icebear, Peace Sports, Bintelli, and other Chinese 50cc scooters
• GY6 125cc / 150cc (QMJ157): Long-case and short-case 150cc street scooters
• Off-Road / Utility: 150cc–170cc go-karts, dune buggies, and ATVs with AC ignition

Technical Specifications

• Firing System: AC (Alternating Current)
• Plug Style: 6-pin (4+2 rounded male connectors)
• Case: Gold anodized aluminum finned heat-sink
• Performance Gain: Approx. 5–10 MPH top speed increase
• SKU: 169-27

Pro Tip: Pair with an NGK Iridium spark plug and a high-output ignition coil to handle the increased spark demand at high RPMs.

California Prop 65 Warning: www.p65warnings.ca.gov

• Removes factory RPM rev limiter — essential for big-bore and high-cam builds
• Re-mapped ignition advance curve for hotter, more precise spark at high RPMs
• Gold anodized aluminum finned heat-sink housing for thermal management and durability
• Standard 6-pin (4+2) green rounded male connectors — plug-and-play on GY6 wiring harnesses
• AC-fired systems only — approx. 5-10 MPH top speed gain on stock and modified engines

Firing System: AC | Plug: 6-pin (4+2 rounded male) | Case: Gold anodized aluminum finned heat-sink | Gain: ~5-10 MPH | Fits: GY6 50cc/125cc/150cc AC systems | SKU: 169-27

GY6 50cc QMB139, GY6 125cc, GY6 150cc QMJ157 with AC ignition systems; 150cc-170cc go-karts, dune buggies, and ATVs with AC ignition. AC-fired systems only.