What is the engine displacement of the 2026 Yamaha YZ125?

The 2026 Yamaha YZ125 has an engine displacement of 125 cc.

2026 Yamaha YZ125 Price, Specs, Review

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Review

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The 2026 Yamaha YZ125 represents the pinnacle of over fifty years of two-stroke innovation. Designed specifically for young racers and two-stroke enthusiasts, it remains one of the lightest and most agile machines in its class. Updates for 2026 include optimized CDI settings for more linear power delivery and a redesigned air intake system that improves airflow and throttle response. At its heart, the 125cc liquid-cooled engine features Yamaha's patented Power Valve System (YPVS), providing a blend of bottom-end torque and explosive mid-to-high-range power. On the chassis side, the legendary KYB Speed-Sensitive System (SSS) front forks and fully adjustable KYB rear shock offer unmatched control by absorbing the harshest track impacts. The aluminum semi-double-cradle frame perfectly balances lightweight construction with the necessary flex for maximum cornering performance. Equipped with a Hitachi Astemo Keihin PWK38S carburetor, the engine delivers sharp and instantaneous response at every twist of the throttle. For 2026, in addition to the iconic 'Team Yamaha Blue', a special '70th Anniversary Edition' featuring a white and red speed block livery is available to celebrate Yamaha's racing heritage.

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License Class (EU)

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Rule of thumb: under 125cc / 15HP → A1, under 47HP → A2, above → A.

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Fuel Economy & Running Costs

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Estimated average for 125cc class: 75-100 mpg (2.5-3.5 L/100km)

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Insurance Class

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Insurance grouping for Yamaha YZ125 (125cc):

📋 Group 1-5 — entry-level, lowest premiums

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Insurance Calculator (UK est.)

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Personalised premium estimate for the Yamaha YZ125 (UK rates):

💡 Estimate based on UK market averages. For real quotes, compare on Compare the Market, MoneySuperMarket, GoCompare.

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Price Estimate

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Estimated price range for the Yamaha YZ125 based on comparable motorcycles:

AVERAGE

$4,263

RANGE

$1,649 - $7,299

📊 average of 52 similar motorcycles · Approximate (USD)

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Buy New & Used

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Find new and used Yamaha YZ125 2026 listings:

🛒 eBay Motors 🏍️ Cycle Trader 🇬🇧 Auto Trader UK 🔍 Google Listings

💡 Third-party listings. MotoBike Info is informational only.

👤 Final premium varies by rider age, history, location.

Yamaha YZ125

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