A few thoughts on the 2026 YZ125 and YZF450 after 20 hours

Yamaha’s 2026 YZ125 and YZF450 models have been put through their paces over 20 hours of riding, revealing a mixture of strengths and minor frustrations. While the YZ125 remains largely unchanged from previous years, it continues to impress with its reliable performance and solid platform. The YZF450, however, has seen significant updates for 2026, including a switch from a cable to a hydraulic clutch system, which has elicited mixed feelings from the tester. Despite some niggles, both bikes demonstrate Yamaha’s commitment to producing competitive and well-rounded motocross machines. One of the main criticisms centres on the fork guard bolts, which are awkwardly positioned, making maintenance unnecessarily difficult. This issue, attributed more to the KYB components than Yamaha itself, involves one bolt that can only be accessed by removing the front wheel or using a very short Allen key. Another notable concern is the new hydraulic clutch on the YZF450, which uses a Nissin setup rather than the previously favoured GYTR Brembo system. The clutch’s on/off feel makes it challenging to modulate power smoothly, prompting plans to experiment with sprocket changes or potentially reverting to the Brembo system for improved control. On the positive side, the YZ125’s enduring design philosophy is praised for not changing simply for the sake of it, with the bike offering consistent power delivery and handling even after extended use. The exclusive 70th Anniversary Edition seat cover adds functional grip without compromising rider movement, enhancing cornering performance. The YZF range’s advanced mapping system also stands out, allowing riders to fine-tune settings such as rev limits and launch control to suit varying track conditions, a feature that is underutilised by many. Another point of divergence between the two models lies in their choice of tyres. The YZ125’s Bridgestone X20s receive high marks for grip and performance, whereas the YZF450’s Dunlop MX34s are less well received by the tester, who finds them lacking in traction and confidence. This preference highlights how personal taste and riding style can influence the overall experience of a bike. Despite these differences, the overall impression is that Yamaha has delivered two strong contenders for the 2026 motocross season, with the YZ125’s classic approach and the YZF450’s modern updates both offering compelling packages for riders.