I've added this upgrade onto my bike it's perfect only thing I found was that the front sprocket was a little loose even with the washer. I'm hearing some noise but unsure if it's the upgrade so I can hear the chain go more now if if there's a problem. ============== Admin Reply: Thanks for your feedback, glad you love it like others do!💎 - If your font sprocket has a rattle, please investigate your drive shaft itself, we don't know if your own previous sprocket splines caused any issues to it etc, remember the original OEM sprocket from Hyosung is made in China, another owner made his bike chain adjustment too tight and he lost his engine shaft, so it was a mess! (his own fault) but the original sprocket was badly worn even inside the spline teeth connecting to the front engine shaft , so double check your setup! Remember to check chain slack and keep it lubed well!

Another great upgrade Marcel Thanks. Since fitting this I couldn't believe the difference! Engine fires up faster, idles steadier and no more bogging on the overrun! I think it pulls stronger too. I'm sure this will cure the higher speed fuel starvation problem too. Worth every penny.

Fitted yesterday, seems to be working well, Delivery by royal mail arrived on time, Very well packaged with other items ordered, Very pleased

Installed to my Hyosung GT125R, immediately noticed the dashboard lights are much brighter, the head lamp is brighter, it starts quicker and generally feels a lot smoother to ride. Cannot recommend it enough. Thank you. 🙏

Get these Laser Iridium Spark Plugs everyone, in Combination with the NGK HT Leads, it makes a difference, she runs a lot smoother, better Throttle control and idle

Installed on RC 2018. The crem de la crem of spark plugs. Engine smooth, power on demand has improved, acceleration unbelievable and a clean start. Worth the money, combine with the NGK caps for optimum performance. Matt