Aprilia RS125 Parts Diagrams

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🏷️ Basic Information Identification Make: Aprilia Model: RS125 Model Years Covered: 1999, 2000, 2001, 2002, 2003 Engine Variant Covered: Rotax 122 two-stroke, single-cylinder Product Type: Parts Diagrams / Parts Catalog...

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Taper: Motorcycle

Distributeur:

UGS: 543871

Mots clés: Aprilia Motorcycle Motorcycles RS Models RS125

Variantes de produits

Description

🏷️ Basic Information

Identification

Make:

Aprilia

Model:

RS125

Model Years Covered:

1999, 2000, 2001, 2002, 2003

Engine Variant Covered:

Rotax 122 two-stroke, single-cylinder

Product Type:

Parts Diagrams / Parts Catalog

Codes

Product Identifier:

Aprilia RS125 Parts Diagrams Exploded 1999-2003

👋 Introduction

Market Position

Segment:

Lightweight sportbike, popular in entry-level performance motorcycle segments.

Target Audience:

Enthusiasts, DIY mechanics, and service professionals working on Aprilia RS125 models.

Competitive Analysis

Key Competitors Era:

Yamaha YZF-R125, Honda CBR125R, Suzuki GSX-R125 (though RS125 predates some of these).

Key Features

Performance Focus:

The RS125 is known for its potent Rotax two-stroke engine, offering class-leading power for its displacement.

Handling:

Agile chassis and sporty suspension contribute to excellent handling characteristics.

Design:

Racetrack-inspired styling, reflecting Aprilia's racing heritage.

📋 Manual Details

Coverage Areas

Primary Coverage:

Component identification and assembly order for the Aprilia RS125

Secondary Coverage:

Illustrations of all major assemblies and sub-assemblies

Page Count

Estimated Page Count:

100-150 (typical for this type of catalog)

Manual Type

Type:

Parts Catalog / Exploded View Diagrams

Language

Language:

English

Format

Format:

Digital (likely PDF) or Print

📖 Manual Coverage

Systems Covered

Engine:

Full engine assembly, including cylinder, piston, crankshaft, gearbox components, lubrication, and cooling systems.

Fuel System:

Carburetor assembly (likely Dell'Orto PHBH), intake manifold, fuel lines, and fuel tank components.

Exhaust System:

Expansion chamber, silencer, and associated mounting hardware.

Transmission:

Gearbox internal components, clutch assembly (likely wet multi-plate), shift mechanism, and final drive (chain and sprockets).

Chassis:

Frame components, sub-frame, swingarm, and associated fasteners.

Suspension:

Front fork assembly (upside-down type), rear shock absorber, linkage (if applicable), and mounting hardware.

Brakes:

Front and rear brake calipers, master cylinders, brake lines, discs, pads, and pedal/lever mechanisms.

Wheels Tires:

Wheels (front and rear), spokes, hubs, bearings, and tire fitment.

Electrical System:

Ignition system (CDI), lighting (headlight, taillight, indicators), wiring harness, battery, starter motor (if applicable), and switchgear.

Bodywork:

Fairings, seat, fuel tank, fenders, and related trim components.

Procedures Included

Part Identification:

Detailed exploded views with numbered parts for accurate identification.

Assembly Disassembly Order:

Illustrates the sequence of component installation and removal.

Part Number Reference:

Essential for ordering correct replacement parts.

Fastener Identification:

Visual representation of bolts, nuts, washers, and their placement.

Technical Depth

Depth:

Component-level breakdown for replacement and parts sourcing.

Diagnostic Assistance:

Indirectly assists with diagnosis by identifying component relationships and potential failure points.

Repair Guidance:

Primarily supports repair by ensuring correct part selection and understanding of assembly.

📊 Manual Specifications

File Format

Digital Format Features:

Searchable text, zoomable images, bookmarking capabilities.

Print Quality

Image Clarity:

High-resolution images suitable for clear part identification.

Binding Type

Print Binding:

Coil-bound or stapled for lay-flat usability (typical).

Paper Type

Print Paper:

Durable paper stock resistant to workshop conditions.

⚙️ Engine Specifications

Primary Engine

Engine Type:

Rotax 122, liquid-cooled, two-stroke, single-cylinder

Displacement:

124.8 cc

Bore X Stroke:

54 mm x 54.5 mm

Compression Ratio:

12.5:1 (typical for this engine)

Valve Mechanism:

Reed valve induction, exhaust power valve (A.E.S. - Aprilia Exhaust System).

Performance

Horsepower:

Approx. 30-33 hp @ 10,500 rpm (depending on market and emissions regulations)

Torque:

Approx. 18 Nm @ 10,000 rpm

Fuel System

Carburetor:

Dell'Orto PHBH 28, or similar.

Fuel Type:

Unleaded gasoline (RON 95 or higher recommended)

Lubrication

Oil System:

Automatic oil injection (pre-mix reservoir).

Cooling

Cooling System:

Liquid-cooled, with thermostat and fan.

🔧 Transmission

Standard

Gearbox:

6-speed constant mesh

Clutch:

Wet, multi-plate

Features

Gear Ratios:

Specific ratios vary but are optimized for sportbike performance.

Final Drive:

Chain drive, 13/48 (example ratio) sprockets.

📐 Dimensions

Exterior

Length:

Approx. 1950 mm

Width:

Approx. 720 mm

Height:

Approx. 1135 mm

Wheelbase:

Approx. 1375 mm

Weights

Dry Weight:

Approx. 135 kg

Fuel Capacity:

Approx. 12 liters (including reserve)

🛡️ Safety Features

Ratings

Safety Certification:

CE compliant (typical for European market models)

Active Features

Braking System:

Hydraulic disc brakes front and rear. Often a larger diameter disc on the front.

Suspension Features:

Upside-down front forks and adjustable rear monoshock for stable handling.

Passive Features

Lighting:

Halogen headlight, LED taillight, front and rear turn signals.

💡 Technology Features

Infotainment

Dashboard:

Analog tachometer, speedometer, odometer, fuel gauge, and indicator lights.

Driver Assistance

ABS was not a common feature on this generation of RS125.

Connectivity

Connectivity Features:

N/A (basic motorcycle electronics)

🔧 Maintenance

Service Intervals

Oil Change Frequency:

Refer to specific service manual for 2-stroke oil level checks and top-ups. Gearbox oil change every 6,000-10,000 km.

Spark Plug Replacement:

Typically every 5,000-7,500 km, depending on plug type and usage.

Air Filter Cleaning:

Inspect and clean every 3,000-5,000 km; replace as needed.

Chain Maintenance:

Clean and lubricate chain every 500-1000 km; adjust tension as needed.

Fluid Specifications

Engine Oil Type:

High-quality 2-stroke synthetic or semi-synthetic oil for automatic injection systems.

Gearbox Oil Type:

API GL-4, SAE 75W/90 or 10W/40 motorcycle gearbox oil.

Coolant Type:

Ethylene glycol-based coolant (50% mixture with distilled water).

Brake Fluid Type:

DOT 4 hydraulic brake fluid.

Known Issues

Two Stroke Maintenance:

Two-stroke engines require diligent maintenance of the powervalve system, proper pre-mix ratios, and can be sensitive to fuel quality and jetting.

Carburetor Issues:

Carburetor can be sensitive to dirt and require regular cleaning and tuning for optimal performance.

Electrical Connections:

Older wiring harnesses can sometimes develop corroded connections, especially if exposed to moisture.

Powervalve Sticking:

Carbon buildup can cause the powervalve to stick, affecting engine performance, requiring periodic cleaning.

📚 Vehicle History

Brand Heritage

Aprilia Legacy:

Aprilia has a strong racing pedigree, particularly in smaller displacement classes and Grand Prix racing, influencing the RS125's design and performance focus.

Model Evolution

Rs125 Lineage:

The RS125 evolved from earlier Aprilia sportbike models, consistently offering a high-performance experience in the 125cc segment.

Production

Manufacturing Origin:

Italy

Production Span:

The RS125 model line has been in production for many years, with significant updates over its lifespan. This specific manual covers the 1999-2003 generation.

🏆 Awards & Recognition

Recognitions

Performance Acclaim:

Often lauded in motorcycle publications for its performance and handling in the 125cc class during its production run.

Ratings

Competitor Comparisons:

Consistently ranked highly against its direct competitors for outright power and track-day suitability.