What is the engine displacement of the 2026 Yamaha YZ125X?

The 2026 Yamaha YZ125X has an engine displacement of 125 cc.

2026 Yamaha YZ125X Price, Specs, Review

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Review

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The 2026 Yamaha YZ125X takes the legendary YZ125 motocross platform and optimizes it specifically for the demands of cross-country and enduro racing. At its heart is a 125cc liquid-cooled, two-stroke engine featuring the Yamaha Power Valve System (YPVS) and a model-specific CDI unit, delivering a broad and usable powerband. The six-speed transmission is tuned with optimized gear ratios to handle everything from tight, technical woods to fast, open sections. The chassis features a race-proven aluminum semi-double cradle frame, engineered to provide the ideal balance of rigidity and flex for precise handling. Suspension duties are handled by the industry-leading KYB Speed-Sensitive System (SSS) inverted forks and a fully adjustable KYB rear shock, both tuned specifically for off-road terrain. With cross-country essentials like an 18-inch rear wheel, Dunlop Geomax MX33 tires, and a standard side stand, the YZ125X is a competition-ready machine right off the showroom floor. Its extreme lightweight and agile nature make it a top choice for riders tackling technical terrain.

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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 YZ125X (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 YZ125X (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 YZ125X 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 YZ125X 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 YZ125X

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