Enduro - Offroad · 1971

SL250

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MotoLibrary Score

40 /100 Commuter

Engine

250 ccm

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Performance & Handling Profile Versatile Everyday Motorcycle

SL250 Performance & Handling Ratings

Power

33/100

250 cc

Torque

38/100

~23 Nm

Agility

85/100

136 kg dry

Ergonomics

68/100

Standard

Range

58/100

Standard

Tires, Oil & Maintenance Specs 1971 Factory Reference

SL250 Tire Size, Oil & Service Capacities

🛢️ Engine Oil & Capacity

SAE 10W-40 / 10W-50 Synthetic 4T (API SN / JASO MA2)

Capacity: 1.40 litres (1.48 US quarts)

⛓️ Final Drive & Chain

Chain 520

5-speed

⚡ Spark Plugs & Battery

NGK CR8E / CR9E

Battery: 12V 7Ah / 9Ah (YTX7L-BS / YTX9-BS)

📏 Seat Height & Mass

136.0 kg (299.8 pounds)

Dry weight: 136.0 kg (299.8 pounds)

🔧 Printable Workshop Fluid & PSI Card →

Engine

Displacement 250.00 ccm (15.26 cubic inches)

Engine Type Single cylinder, four-stroke

Engine Details Single cylinder, four-stroke

Valves/Cylinder 2

Fuel System Carburettor

Fuel Control Double Overhead Cams/Twin Cam (DOHC)

Ignition CDI / Transistorized

Lubrication Wet sump forced lubrication

Cooling Air

Transmission

Gearbox 5-speed

Final Drive Chain

Clutch Multiplate wet clutch, cable/hydraulic operated

Driveline O-ring / X-ring chain final drive

Chain Size 520

Chassis

Front Suspension Telescopic fork

Rear Suspension Swingarm with linkage and adjustable monoshock

Wheels & Brakes

Front Tire Pressure 1.0 bar (15 psi)

Rear Tire Pressure 1.0 bar (15 psi)

Front Brakes Expanding brake (drum brake)

Rear Brakes Expanding brake (drum brake)

Wheels Wire spoked wheels with aluminium rims

Dimensions & Weight

Dry Weight 136.0 kg (299.8 pounds)

Oil Capacity 1.40 litres (1.48 US quarts)

Service & Fluids

Engine Oil SAE 10W-40 / 10W-50 Synthetic 4T (API SN / JASO MA2)

Brake Fluid DOT 4

Spark Plugs NGK CR8E / CR9E

Battery 12V 7Ah / 9Ah (YTX7L-BS / YTX9-BS)

Other

Starter Kick

Electrical 12V 7Ah / 9Ah (YTX7L-BS / YTX9-BS)

Data-Driven Buyer Verdict Evaluated from 1971 OEM specs & class benchmarks

1971 Honda SL250 Pros, Cons, Recalls & Verdict

✓ Pros & Key Strengths

Manageable 147 kg (324 lbs) curb mass makes low-speed filtering and garage parking effortless.
Balanced Enduro - Offroad chassis geometry with proven OEM componentry.
Broad aftermarket tire and service parts availability for the 1971 Honda platform.

! 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 1971 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 1971 SL250 →

Technical Overview

1971 Honda SL250 Technical Analysis, Chassis Review & Ownership Overview

Built around Honda's enduro - offroad motorcycle platform, the 1971 Honda SL250 features a 250 cc (15.3 cu in) air-cooled single cylinder, four-stroke configuration. Internal cylinder geometry specifies 2 valves per cylinder, fuel delivery managed via carburettor.

On the scales, the SL250 measures 136 kg (300 lbs) dry.

Chassis suspension hardware on the 1971 Honda SL250 is configured for predictable road feedback with front suspension handled by Telescopic fork and rear damping managed via Swingarm with linkage and adjustable monoshock. Braking performance is delivered by expanding brake (drum brake) up front paired with expanding brake (drum brake) at the rear.

Routine workshop maintenance calls for recommended SAE 10W-40 / 10W-50 Synthetic 4T (API SN / JASO MA2) engine oil (1.40 litres (1.48 US quarts)), NGK CR8E / CR9E spark plugs, cold tire pressures of 1.0 bar (15 psi) front / 1.0 bar (15 psi) rear. Buyers cross-shopping the 1971 Honda SL250 in the Enduro - Offroad segment most frequently benchmark its horsepower, seat height, and curb weight against the Indian ME 100 (1974), Harley-Davidson KR 750 (1968), Harley-Davidson KR 750 (1969).

About These 1971 Honda SL250 Specifications & Data Sources: Technical data for the 1971 Honda SL250 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 Enduro - Offroad Rivals — One-Click Compare Browse all Enduro - Offroad →

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.

Weight

Compare weight carefully because it affects low-speed handling, parking and confidence.

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

Off-Road & Adventure

⚖️

Handling

Manageable weight for most riders

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

SL250 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 A2 Compliant (Native)

SL250 A1, A2 & LAMS License Compatibility

Directly compliant with the ≤35 kW (47 HP) and ≤0.20 kW/kg A2 license limit without restriction kits.

Output (kW / HP)

N/A

Power / Weight

Standard

LAMS Ratio

N/A

🇪🇺 EU/UK A1 (≤11kW) ✗ No

🇪🇺 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

SL250 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: 15T / 44T (2.93:1) · Class Ref

SL250 Sprocket Ratio, RPM & Top Speed

Front Sprocket 15T (0)

Rear Sprocket 44T (0)

Final Ratio

2.93:1

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

SL250 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)

15 / 15 PSI

Cite or Share Spec Card

1971 Honda SL250 Summary Table

Writing a review, forum post, or blog article on the 1971 Honda SL250? Copy a Markdown table or embeddable HTML spec card:

### 1971 Honda SL250 — Key Specs & Telemetry
| Parameter | Specification |
| :--- | :--- |
| **Category** | Enduro - Offroad |
| **Displacement** | 250.00 ccm (15.26 cubic inches) |
| **Power Output** | N/A |
| **Torque** | N/A |
| **Seat Height** | 800 mm |
| **Weight (Dry / Wet)** | 136.0 kg (299.8 pounds) / 144.2 kg |
| **Mean Piston Speed** | Standard |
| **EU A2 License Status** | EU / UK A2 Compliant (Native) |
| **Source & Full Telemetry** | https://motolibrary.com/bikes/honda/sl250/1971 |

<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">1971 Honda SL250 — 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">250.00 ccm (15.26 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">136.0 kg (299.8 pounds) / 144.2 kg</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 A2 Compliant (Native) · 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/honda/sl250/1971" style="color:#bf3b00;font-weight:600;text-decoration:none">1971 Honda SL250 Specs, Review &amp; Recalls — MotoLibrary</a></div></div>

Running & Fuel Cost Estimate

SL250 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

1971 Honda SL250 Frequently Asked Questions

Does the 1971 Honda SL250 have any official safety recalls?

No model-year recall summary is currently flagged in our editorial audit for the 1971 Honda SL250. 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 1971 Honda SL250?

The 1971 Honda SL250 has a seat height of 800 mm, a dry weight of 136.0 kg (299.8 pounds), and a wet/curb weight of 144.2 kg (estimated).

Is the 1971 Honda SL250 EU A2 or LAMS license legal?

License classification: EU / UK A2 Compliant (Native). Directly compliant with the ≤35 kW (47 HP) and ≤0.20 kW/kg A2 license limit without restriction kits.

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