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1998-2008 Suzuki RM 125 Magnesium Boyesen Clutch and Ignition Cover Set

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$184.84
While uncommon, some items may ship from a separate warehouse

About the Clutch Cover

Features
Set your ride apart from the rest with the ultimate look in race performance
Lightweight factory clutch covers provide years of outstanding protection; guaranteed not to warp
Individually surfaced for a perfect, leak-free fit
Super-tough, powder-coated finish resists weathering and wear and tear
Asbestos-free gasket is bound with nitrile for tight, leak-free seal

Specs
Product Name Cover
Color/Finish Magnesium / Powder-Coated
Model Factory Racing
Type Clutch
Units Each
Riding Style Off-Road


Package info
Weight 0.8 lbs
Height 2.55
Length 7.91
Width 7.87


About the Ignition Cover

Specs
Model Factory Racing
Riding Style Off-Road
Type Ignition
Color/Finish Magnesium / Powder-Coated
Material Aluminum
Product Name Cover
Units Each

Package info
Weight 0.6 lbs
Height 2.55
Length 7.95
Width 7.83

The 1998-2008 Suzuki RM125 is a two-stroke motocross bike that holds a special place in the 125cc class for its high-revving engine, sharp handling, and competitive performance. Known for its lightweight design and nimble handling, the RM125 is a favorite among racers and enthusiasts.


General Overview

  • Category: Motocross / Off-road
  • Production Years: 1998-2008
  • Engine Type: Two-stroke single-cylinder
  • Reputation: Highly regarded for its agility, responsive engine, and competitive nature in the 125cc motocross class.

Engine and Performance

  • Displacement: 124 cc
  • Cooling System: Liquid-cooled, ensuring consistent performance under high-stress conditions.
  • Bore x Stroke: 54.0 mm x 54.5 mm
  • Compression Ratio: Approximately 8.7:1, varying slightly across years.
  • Carburetor: Mikuni TMX 38 mm, delivering crisp throttle response and efficient fuel delivery.
  • Horsepower: Approximately 34 HP, making it competitive in the 125cc class.
  • Power Valve: Suzuki Advanced Power Valve System (SAPVS) to broaden the powerband, delivering strong mid-range performance and high-end power.
  • Powerband: Aggressive mid-to-high RPM power, with smooth low-end torque for technical sections.

Drivetrain

  • Transmission: 6-speed manual gearbox, offering close ratios for maximum acceleration and power delivery.
  • Clutch: Multi-plate wet clutch for smooth and reliable engagement.
  • Final Drive: Chain drive for durability and ease of maintenance.

Chassis and Suspension

  • Frame:
    • 1998-2000: Steel frame for durability and a forgiving ride.
    • 2001 onward: Aluminum twin-spar frame for reduced weight and improved rigidity, enhancing handling precision.
  • Front Suspension:
    • Showa inverted cartridge forks.
    • Fully adjustable for compression and rebound damping.
    • Travel: Approximately 12.2 inches.
  • Rear Suspension:
    • Showa shock with Suzuki’s Full Floater linkage system.
    • Fully adjustable for preload, compression, and rebound damping.
    • Travel: Around 12.3 inches.
  • Handling: Lightweight and highly responsive, excelling in corners and technical sections.

Brakes and Wheels

  • Front Brakes: Single 240 mm hydraulic disc brake with a dual-piston caliper for strong stopping power.
  • Rear Brakes: Single 220 mm hydraulic disc brake with a single-piston caliper.
  • Tires: 21-inch front and 19-inch rear knobby tires, optimized for motocross performance.

Dimensions and Weight

  • Seat Height: Approximately 37.4 inches, suitable for taller riders and motocross use.
  • Ground Clearance: Around 13 inches, ideal for track obstacles and rough terrain.
  • Dry Weight:
    • Steel frame models (1998-2000): Approximately 203 lbs.
    • Aluminum frame models (2001-2008): Reduced to around 198 lbs.
  • Fuel Capacity: 2.1 gallons, typical for 125cc motocross bikes.

Key Updates by Era

  1. 1998-2000 (Steel Frame Era):
    • Durable steel frame with excellent flexibility.
    • SAPVS refined for smoother power delivery.
    • Strong Showa suspension, optimized for motocross tracks.
  2. 2001-2004 (Aluminum Frame Introduction):
    • Switch to an aluminum frame for reduced weight and increased rigidity.
    • Improved ergonomics for better rider comfort and control.
    • Suspension updates for more precise handling and better stability.
  3. 2005-2008 (Final Years):
    • Minor engine refinements for smoother and more predictable power delivery.
    • Revised suspension settings for improved damping.
    • Updated bodywork and graphics for a modern look.

Features

  • Durability: Rugged components designed for the rigors of motocross racing.
  • Ergonomics: Slim profile for easy rider movement and aggressive riding.
  • Aftermarket Support: Extensive aftermarket community for performance upgrades and replacement parts.
  • Maintenance: Simple two-stroke design makes it easy to service and rebuild.

Pros

  • Lightweight and nimble, offering excellent handling in tight corners and technical sections.
  • High-revving engine with competitive power for its class.
  • Durable and reliable with proper maintenance.
  • Easy to work on and customize, thanks to its straightforward two-stroke design.
  • Strong aftermarket support for parts and upgrades.

Cons

  • Requires frequent maintenance, including top-end rebuilds typical of two-stroke engines.
  • Lacks the low-end torque of four-stroke competitors.
  • Vibrations can be noticeable, especially at high RPMs.
  • Discontinued after 2008, making OEM parts harder to source over time.

Riding Experience

  • The RM125 offers a thrilling ride, especially for riders who enjoy high-revving performance and sharp handling.
  • It excels on motocross tracks, where its lightweight frame and responsive engine can shine.
  • Its forgiving nature and manageable powerband make it suitable for intermediate riders, while its competitive edge appeals to experienced racers.

Legacy

  • The Suzuki RM125 was a dominant force in the 125cc motocross class, earning respect for its agility, power, and reliability.
  • Even after its discontinuation in 2008, the RM125 remains a favorite among two-stroke enthusiasts and vintage racers.
  • Its legacy endures as one of the finest two-stroke 125cc motocross bikes ever produced.

If you're considering a Suzuki RM125, you're investing in a lightweight, high-performance machine with a proven track record in motocross. With proper maintenance and the strong aftermarket support available, the RM125 remains a top choice for riders seeking the thrill of two-stroke motocross performance.