Chain worked well for a few months, had 85mph on flat, compared to normally 65, however it's been roughly 3 months and now the chain isn't holding between rides, tightened it and became slack at the end of the same ride, resorting to a max of 65 down hill, have taken 2 links out and tighten with chain slacking still got the same problem, not impressed by the quality of the chain, in total I've done less than 600 miles on this chain. Admin Edit = Customer bought kit in July 2026 and reviewed in September 2026 ,we are waiting to hear from customer about their bike configuration at the rear end (if badly worn cush drive was at fault , or carrier bearing or too tight chain adjustment, or chain was skewed // instead of straight || etc ) - We supplied a world class AFAM gold chain made in EU, so 600 miles is worrying for us and not good. Fortunately, the sprockets are fast and appear intact, we will await their reply for us to investigate the "chain" premature wear.

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

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!

Starting with the quality of the wire work, excellently put together. As for longevity, I made this switch around 4k miles when my stock regulator went out. I decided to just replace the stator as well. (The stator provided by Marcel was a ElectroSport USA stator] It has been three years since I've had these parts and they have continued to hold up. I blew one regulator fuse(THANK YOU) and that is from pushing the bike to the absolutely limit(6 months ago) on a speedrun to get to an Autoparts shop for a drainplug for my car before they closed. If you are looking to replace the stock reg and stator I would trust the work put out here. They know where to find quality parts. If it wasn't for wanting to not mess with this again, I would pick up a Shinden set that is still floating around here.

The best upgrade you can make on this bike. Those sprockets change everything - acceleration, higher max speed, better rmp/speed ratio. I'm super happy and I'd do it again, anytime. The only suggestion to Marcel I'd have is to offer the front sprocket with rubber to make the chain work quieter with less vibrations. All the rest, 10/10!

Received my front pads this morning which was hand delivered by yourselves very kind and helpful thank you so much