Naked bike · 2010

125 RS

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MotoLibrary Score

35 /100 Commuter

Engine

125 ccm

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Performance & Handling Profile Versatile Everyday Motorcycle

125 RS Performance & Handling Ratings

Power

24/100

125 cc

Torque

27/100

~11 Nm

Agility

85/100

145 kg

Ergonomics

68/100

Standard

Range

58/100

Standard

Tires, Oil & Maintenance Specs 2010 Factory Reference

125 RS Tire Size, Oil & Service Capacities

🛞 Front Tire Size

110/70-17

Pressure: 1.8 bar (26 psi)

🛞 Rear Tire Size

130/70-17

Pressure: 2.0 bar (29 psi)

🛢️ Engine Oil & Capacity

SAE 10W-40 4T (API SL/SN / JASO MA2)

Capacity: 1.00 litres (1.06 US quarts)

⛓️ Final Drive & Chain

Chain 428

5-speed

⚡ Spark Plugs & Battery

NGK CR8E / CPR8EA-9

Battery: 12V 6Ah / 7Ah (YTX7L-BS)

📏 Seat Height & Mass

145.0 kg (319.7 pounds)

Wet weight: 145.0 kg (319.7 pounds)

🔧 Printable Workshop Fluid & PSI Card →

Engine

Displacement 124.6 ccm (7.60 cubic inches)

Engine Type Single cylinder, four-stroke

Engine Details Single cylinder, four-stroke

Valves/Cylinder 2

Fuel System Carburettor

Fuel Control Overhead Cams (OHC)

Ignition Digital transistorized (TCI / ECU)

Lubrication Wet sump forced lubrication

Cooling Air

Transmission

Gearbox 5-speed

Final Drive Chain (final drive)

Clutch Wet disk

Driveline Roller chain final drive

Chain Size 428

Chassis

Frame Type Steel

Front Suspension Telescopic fork

Rear Suspension Swingarm with monoshock

Wheels & Brakes

Front Tyre 110/70-17

Rear Tyre 130/70-17

Front Tire Pressure 1.8 bar (26 psi)

Rear Tire Pressure 2.0 bar (29 psi)

Front Brakes Double disc

Rear Brakes Single disc

Wheels Cast aluminium alloy rims

Dimensions & Weight

Weight incl. 145.0 kg (319.7 pounds)

Oil Capacity 1.00 litres (1.06 US quarts)

Service & Fluids

Engine Oil SAE 10W-40 4T (API SL/SN / JASO MA2)

Brake Fluid DOT 4

Spark Plugs NGK CR8E / CPR8EA-9

Battery 12V 6Ah / 7Ah (YTX7L-BS)

Other

Starter Electric

Color Options Red, blue

Electrical 12V 6Ah / 7Ah (YTX7L-BS)

Notes

Yuki bikes are sold in the Czech Republic and the Slovak Republic.

Data-Driven Buyer Verdict Evaluated from 2010 OEM specs & class benchmarks

2010 Yuki 125 RS Pros, Cons, Recalls & Verdict

✓ Pros & Key Strengths

Manageable 145 kg (320 lbs) curb mass makes low-speed filtering and garage parking effortless.
Dual front disc braking system (Double disc) provides strong stopping power.
Balanced Naked bike chassis geometry with proven OEM componentry.

! Cons & Buyer Considerations

Chain final drive requires regular cleaning, lubrication, and slack inspection every 600–800 km.
Air-cooled thermal design (Air) relies on steady airflow during hot summer stop-and-go traffic.
As a 2010 model-year machine, buyers should inspect rubber brake lines, charging voltage, and suspension seals closely.

🛡️ Open Full Recall & Chronic Fault Lookup → 📋 Generate Printable Pre-Purchase Checklist for 2010 125 RS →

Technical Overview

2010 Yuki 125 RS Technical Analysis, Chassis Review & Ownership Overview

Engineered by Yuki for the naked motorcycle segment, the 2010 Yuki 125 RS pairs a 124.6 cc (7.6 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. Internal cylinder geometry specifies 2 valves per cylinder, fuel delivery managed via carburettor.

On the scales, the 125 RS measures 145 kg (320 lbs) wet (curb).

Structurally, the 2010 Yuki 125 RS is built around a Steel chassis with front suspension handled by Telescopic fork and rear damping managed via Swingarm with monoshock. Braking performance is delivered by double disc up front paired with single disc at the rear. Factory rolling stock mounts a 110/70-17 front tire and a 130/70-17 rear tire, sizing the contact patch for predictable turn-in grip and replacement tire availability.

Routine workshop maintenance calls for recommended SAE 10W-40 4T (API SL/SN / JASO MA2) engine oil (1.00 litres (1.06 US quarts)), NGK CR8E / CPR8EA-9 spark plugs, cold tire pressures of 1.8 bar (26 psi) front / 2.0 bar (29 psi) rear. Buyers cross-shopping the 2010 Yuki 125 RS in the Naked bike segment most frequently benchmark its horsepower, seat height, and curb weight against the Honda CB1000R (2013), Honda CB1000R ABS (2013), Honda CB1000R (2011).

Tire Combination

110/70-17 / 130/70-17

About These 2010 Yuki 125 RS Specifications & Data Sources: Technical data for the 2010 Yuki 125 RS is compiled from manufacturer OEM service sheets and type-approval records by the MotoLibrary Editorial Team. Performance ratings, seat-height ergonomics, A1/A2 license eligibility, gearing speeds, and ownership cost estimates are calculated across MotoLibrary's database of 43,881+ motorcycles using power-to-weight (HP/kg) ratios and factory chassis dimensions.

✓ Verified against OEM service manuals & type-approval records

Editorial Methodology Report a Spec Correction →

Similar Naked bike Rivals — One-Click Compare Browse all Naked bike →

Before You Compare This Bike

Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.

Brakes

Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.

Suspension

Suspension details can matter for comfort, road feel and long-distance riding.

Transmission

Transmission and final drive affect maintenance, smoothness and everyday usability.

Rider Profile

Who Is This Bike For?

🏍️

Best For

City & Weekend Rides

⚖️

Handling

Manageable weight for most riders

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Seat Height & Ergonomics Seat: 800 mm (31.5 in)

125 RS Seat Height & Rider Height Fit

Rider Height 175 cm (5'9")

Leg Inseam 79 cm (31.1")

Footwear Sole:

🟢 Balls of Both Feet (Secure)

Est. Knee Angle: ~92°

Quick Height Reference (800 mm Saddle + 18 mm Seat Width Arc):

163cm (5'4")

Tip-Toe

170cm (5'7")

Balls of Feet

178cm (5'10")

Flat-Foot

185cm (6'1")

Flat-Foot

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License & Power Limit Check EU / UK A1 & CBT Eligible

125 RS A1, A2 & LAMS License Compatibility

Meets ≤125cc and ≤11 kW (15 HP) learner requirements natively.

Output (kW / HP)

N/A

Power / Weight

Standard

LAMS Ratio

N/A

🇪🇺 EU/UK A1 (≤11kW) ✓ Eligible

🇪🇺 EU/UK A2 (≤35kW) ✓ Native

🇦🇺 AU/NZ LAMS (≤150kW/t) ✓ Eligible

🌍 Unrestricted Class A ✓ All Riders

* EU Directive 2006/126/EC requires ≤35 kW (47.5 HP), ≤0.20 kW/kg wet weight, and a factory base model not exceeding 70 kW (95 HP) for A2 restriction. Always verify VIN homologation on your registration certificate.

🪪 Open Full A2 / LAMS Restrictor & Eligibility Checker →

Engine Design & Chassis Dimensions OEM Specs

125 RS Engine Stroke, RPM & Steering Geometry

Mean Piston Speed (@ 8,500 RPM)

Standard Street Velocity

Standard Factory Thermal Load

Bore × Stroke Architecture

OEM Spec

Balanced Street Engine Architecture

Steering Rake & Trail

Standard Rake

Neutral Balanced Cornering & Highway Composure

Wheelbase & Stability

Standard Wheelbase

Balanced street/canyon wheelbase

Engine Note: Mean piston speed (v_m = 2 × Stroke × RPM / 60) measures piston travel velocity at peak power. Values under 18.5 m/s indicate low inertial stress on connecting rods and rings; values above 21.5 m/s approach Formula 1 / MotoGP velocities.

Sprockets, Chain & Cruising RPM Base: 14T / 46T (3.29:1) · Class Ref

125 RS Sprocket Ratio, RPM & Top Speed

Front Sprocket 14T (0)

Rear Sprocket 46T (0)

Final Ratio

3.29:1

0.0% (Factory Stock)

100 / 120 km/h RPM

Top gear est.

Geared V-Max

~180 km/h

Rule of Thumb: Dropping 1 tooth in the front (-1T) equals roughly adding +2.7 to +3 teeth on the rear sprocket, boosting wheel torque by ~6–7% at the cost of higher highway cruising RPM.

⚙️ Tire Size & Speedo Error Calc → 🏁 Loaded Rider HP/kg & Drag Calc →

Tire Pressure & Suspension Travel Travel: 125mm F / 130mm R

125 RS Tire Pressure (PSI / Bar) & Suspension Sag

1. Riding Setup Mode:

2. Payload / Passenger Load:

Target Rider Sag (F / R)

38 mm Front · 39 mm Rear

Free (Static) Sag target: 10–15 mm

Cold Tire Pressure (F / R)

26 / 29 PSI

Cite or Share Spec Card

2010 Yuki 125 RS Summary Table

Writing a review, forum post, or blog article on the 2010 Yuki 125 RS? Copy a Markdown table or embeddable HTML spec card:

### 2010 Yuki 125 RS — Key Specs & Telemetry
| Parameter | Specification |
| :--- | :--- |
| **Category** | Naked bike |
| **Displacement** | 124.6 ccm (7.60 cubic inches) |
| **Power Output** | N/A |
| **Torque** | N/A |
| **Seat Height** | 800 mm |
| **Weight (Dry / Wet)** | N/A / 145.0 kg (319.7 pounds) |
| **Mean Piston Speed** | Standard |
| **EU A2 License Status** | EU / UK A1 & CBT Eligible |
| **Source & Full Telemetry** | https://motolibrary.com/bikes/yuki/125-rs/2010 |

<div style="font-family:system-ui,-apple-system,sans-serif;border:1px solid #e2dfd8;border-radius:12px;padding:14px 16px;max-width:560px;background:#ffffff;color:#1a1a1a"><div style="font-weight:700;font-size:16px;margin-bottom:8px">2010 Yuki 125 RS — Technical Specs &amp; Recall Summary</div><table style="width:100%;border-collapse:collapse;font-size:13px"><tr><td style="padding:5px 0;border-bottom:1px solid #eee;color:#666">Engine / Power</td><td style="padding:5px 0;border-bottom:1px solid #eee;font-weight:600;text-align:right">124.6 ccm (7.60 cubic inches) · N/A</td></tr><tr><td style="padding:5px 0;border-bottom:1px solid #eee;color:#666">Seat Height</td><td style="padding:5px 0;border-bottom:1px solid #eee;font-weight:600;text-align:right">800 mm</td></tr><tr><td style="padding:5px 0;border-bottom:1px solid #eee;color:#666">Weight (Dry / Wet)</td><td style="padding:5px 0;border-bottom:1px solid #eee;font-weight:600;text-align:right">N/A / 145.0 kg (319.7 pounds)</td></tr><tr><td style="padding:5px 0;border-bottom:1px solid #eee;color:#666">License / Recall Audit</td><td style="padding:5px 0;border-bottom:1px solid #eee;font-weight:600;text-align:right">EU / UK A1 &amp; CBT Eligible · Check VIN / model-year recall database</td></tr></table><div style="margin-top:8px;font-size:12px;color:#666">Data source: <a href="https://motolibrary.com/bikes/yuki/125-rs/2010" style="color:#bf3b00;font-weight:600;text-decoration:none">2010 Yuki 125 RS Specs, Review &amp; Recalls — MotoLibrary</a></div></div>

Running & Fuel Cost Estimate

125 RS Annual Fuel, Maintenance & Ownership Cost

Annual km

Fuel Price ($/L)

Fuel Consumption (L/100km) — estimated

⛽ Fuel

per year

🔧 Maintenance

per year

🛡️ Insurance

per year

TOTAL

* Estimates only. Actual costs vary by country, riding habits, insurance provider and maintenance schedule.

Quick Buyer Answers

2010 Yuki 125 RS Frequently Asked Questions

Does the 2010 Yuki 125 RS have any official safety recalls?

No model-year recall summary is currently flagged in our editorial audit for the 2010 Yuki 125 RS. Always run the 17-digit steering-head VIN through NHTSA or DVSA before purchasing a used motorcycle.

What is the seat height and weight of the 2010 Yuki 125 RS?

The 2010 Yuki 125 RS has a seat height of 800 mm, a dry weight of unspecified, and a wet/curb weight of 145.0 kg (319.7 pounds).

Is the 2010 Yuki 125 RS EU A2 or LAMS license legal?

License classification: EU / UK A1 & CBT Eligible. Meets ≤125cc and ≤11 kW (15 HP) learner requirements natively.

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