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!

Erratic idling completely sorted now I have replaced this. Excellent advice from Marcel as always, would recommend this to any GV125 riders

Only brought this since I've heard the stock ones on the bike aren't that reliable

100% genuine parts the guys no what's hes on about 100% fast delivery would definitely recommend any one with a hyosung

Straight swap, easy fit. Looks great. Will post pictures later. Bigger front and rear sockets, longer thicker chain. I am perfectly happy with my purchase and hand delivered by Marcel. Excellent product, great store. Will be using again

Great improvement in gear changing and the way my gt performs now. Do yourself and your bike a favour and buy it, worth the money.

Easy to fit and instant gain, quick service too. cheers Marcel

Just had this fitted big difference good deleviery aswel

Got my Regulator rectifier as promised on time today very fast and reliable service will be ordering again and a big shout out to Marcel who has helped talk me through it all will post pics on hyosung website thanks

Erratic idle fixed works great cheers!