Since my last Long Haul update on the 2018 Kawasaki KX450F, I've logged another five hours and have enjoyed spending more time on the big green machine. Around the 20-hour mark, I noticed the left fork seal had started to leak and the chain guide and slider were showing some serious wear. Sure, they could have lasted a little longer, but I figured it was a good time to give the bike a refresh. Kawasaki was kind enough to install a new fork seal, front brake pads, grips, sprockets, and a chain. All the parts that Kawasaki replaced were OEM, which I'm a huge fan of, but I installed a TM Designworks SX Factory Edition Slide-N-Guide Kit as it's known to last longer than the OEM chain slider and rear chain guide. The TM Designworks unit will be the next product I test on the bike. Aside from having to replace the aforementioned parts, the bike still feels tight and new.