GOOFIT Modified 6 Pin CDI Racing Ignition Coil Set Replacement for Yerf Dog GY6 50cc 60cc 80cc 125cc 150cc 139QMB 152QMI 157QMJ Engines Go Kart ATV Scooter Dirt Bikes

Cdi was built very well like the light shows its working it increased my top end bout 2 mph but think I could have 2 heavy of rollers .would buy part again the coil just like any coil nothen special I could tell.i would buy again and recommend to a friend.

Installation was a breeze, no surprises or issues. As for performance, well, this isn't really a part to increase your performance; it's a part to CHANGE it. This will give you a bit more of a gradual and healthy initial acceleration, because it's tuned differently than your stock CDI, which probably just tells your vehicle to "GO", as opposed to metering the power strategically. For the price, I'd say it's worth throwing in if you have a junky stock CDI.

CDI works perfect but the coil is trash no spark used original coil

Revs higher. And the spark was visibly stronger compared with the stock set up. Probably should be the first aftermarket part you add to a bike when considering price and results. It does what it says it will, easy installation and great price.

It's what I needed thanks

anything for more speed right !I love these cdi boxes and ignition coil but i do not recommend these paticular spark plug the orangereason the threads are different stick to ngk and i do mean differentI ruin the threads on my bike last yearbe very careful very careful a five dollar spark plug isnt worth what i had to endurehope this helpjust my opion!

Good product

Cdi is affected could i get a exchange for another one

I haven't finished building my bike so can't fully test it but it works upto now

The new ignition coil gave my gy6 125cc moped a lot more spark. The CDI also helped a bit with speed too. Great purchase.

I checked that my alternator was AC before buying these products. Easy to connect and my Moped started instantly. There is no need for a kill switch as the alternator has a trigger when the key is switched off.I looked on the internet before buying the CDI box and while some people said it did not work in all mopeds, it worked fine in mine.Update - the CDI failed after 1.5 hours of use, I tested it using a multimeter and there is continuity between all terminals.They need better quality control of their products!

Very happy with the coil and ignition unit good price and fast delivery

La bobina que es lo que queria funciona bien... normal, como debe. El CDI en cambio hace que el fusible principal de mi moto reviente en cuanto le doy al starter... será por la configuración de los cables peroo... viene sin documentación alguna, asi que vete a saber.