Yz125
2026 Yamaha Yz125 Technical Analysis & Specification Breakdown
Built around Yamaha's motorcycle platform, the 2026 Yamaha Yz125 utilizes a 125 cc engine layout. Internal engine geometry specifies a bore and stroke of 54.0mm x 54.5mm with a 8.2~10.1:1 compression ratio.
On the scales, the Yz125 measures 212 kg (467 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 38 mm (1.5 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 56 mm (2.2 in) wheelbase engineered for quick, flickable steering geometry. The 1.8-liter (0.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Yamaha archive, this model family spans 19 indexed model years from 2008 to 2026, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
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