fits model: Rm100, Rm125. make: Suzuki. year: 1976-80.

( Manufacturer Part Number: 24331-41302 ), ( Part Type: Gear ), ( Country Of Origin: Japan )
The **Suzuki 24331-41302 (and corresponding part numbers 41101 for the RM100 and RM125 models, spanning production years 1976 to 1980)** is a meticulously engineered transmission component designed specifically for Suzuki s iconic RM-series motorcycles, including the legendary RM100 and RM125. This third gear assembly represents a critical element of the bike s drivetrain, embodying the precision and reliability that defined Suzuki s early off-road and racing machines. Crafted from high-grade steel and engineered to withstand the demands of aggressive riding, this gearset is built to deliver seamless power transfer, ensuring optimal performance whether navigating rough terrain, tight trails, or high-speed track sessions. The RM100 and RM125 models, known for their lightweight frames and nimble handling, relied on this transmission to efficiently channel engine power to the rear wheel, making it a cornerstone of their legendary agility. The 24331-41302 gearset is a direct-fit replacement, designed to restore the original functionality of these classic bikes, offering the same durability and smooth engagement as the factory unit. Whether restoring a vintage RM for historical accuracy or upgrading an existing bike for enhanced performance, this transmission component bridges the gap between nostalgia and modern reliability, ensuring that the spirit of Suzuki s pioneering off-road engineering endures.
### **Analysis of Buying a Suzuki RM100/RM125 (1976 1980) with the Specified Parts (24331-41302, 41101, 3rd Gear)**
#### **Overview of the Bike**
The Suzuki RM100 and RM125 (1976 1980) are classic off-road motorcycles known for their simplicity, durability, and historical significance in motocross. These bikes were designed for racing and trail riding, featuring a single-cylinder air-cooled engine, a chain final drive, and a basic suspension setup. The **24331-41302** and **41101** parts refer to:
- **24331-41302**: Likely the **crankshaft assembly** (common failure point in older Suzukis).
- **41101**: Possibly the **piston or connecting rod** (critical for engine health).
- **3rd gear**: Indicates the bike is in a drivable but possibly worn condition.
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### **Pros of Buying This Bike**
1. **Historical and Nostalgic Value**
- The RM100/125 is a legendary bike in motocross history, especially in the 1970s. Owning one connects you to a classic era of off-road racing.
- Well-preserved examples can appreciate in value, particularly if they are rare or restored.
2. **Simplicity and Reliability (When Well-Maintained)**
- The design is straightforward, making repairs and modifications easier for experienced mechanics.
- The engine is robust if the crankshaft, piston, and bearings are in good condition. A fresh set of parts (like the 24331-41302 crank) can extend its life significantly.
- No complex electronics or fuel injection just a carbureted air-cooled single.
3. **Lightweight and Maneuverable**
- The RM100 weighs around **180 200 lbs (82 90 kg)**, making it highly agile for trail riding or light motocross.
- The small displacement (100cc or 125cc) allows for easy handling, even in tight spaces.
4. **Modification Potential**
- The bike is highly tunable you can upgrade the carburetor, exhaust, suspension, or even swap in a more powerful engine (e.g., a 250cc conversion).
- Aftermarket parts (clutches, forks, sprockets) are widely available for these models.
5. **Fuel Efficiency and Low Operating Costs**
- The small engine consumes very little fuel (typically 1 1.5 gallons per hour at full throttle).
- Minimal maintenance costs if you perform basic upkeep (oil changes, chain lubrication, valve adjustments).
6. **Great for Learning or Light Off-Road Use**
- Ideal for beginners in motocross or trail riding due to its manageable power and lightweight frame.
- Can be used for casual riding, track days, or even as a project bike for restoration.
7. **Community and Racing Opportunities**
- There is a strong community of RM100/125 enthusiasts, with clubs, rallies, and vintage racing events (e.g., AMA Vintage Motocross).
- Many tracks still allow older bikes, making it easy to participate in classic racing.
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### **Cons of Buying This Bike**
1. **Potential Mechanical Issues**
- **Crankshaft Wear (24331-41302)**: The original crankshafts in these bikes are prone to wear, especially if the bike has high mileage or was ridden aggressively. A replacement crank is a significant investment ( $150 $300), and if the bearings or journals are damaged, the engine may need a rebuild.
- **Piston and Connecting Rod (41101)**: If these are worn or scored, they can cause catastrophic engine failure. Inspect for scoring, cracks, or excessive play.
- **Clutch and Transmission**: The clutch (especially on the RM100) is known to wear out quickly. The 3rd gear being mentioned suggests the bike is drivable but may have transmission issues (e.g., worn synchronizers, bent shift forks).
- **Suspension**: The original fork and shock are basic and may be stiff or leaky. Upgrading them is recommended for comfort and performance.
2. **High Maintenance Requirements**
- Unlike modern bikes, these require frequent adjustments (valve clearances, chain tension, carburetion).
- The air-cooled engine runs hot and can overheat if not maintained properly.
- Rust is a common issue in older bikes, especially in the frame, swingarm, and exhaust.
3. **Limited Power and Speed**
- The RM100 produces about **10 12 hp**, and the RM125 around **15 18 hp** barely enough for serious motocross today. It s not a bike for high-speed trail riding or highway use.
- Top speed is around **50 60 mph (80 95 km/h)**, making it unsuitable for highway commuting.
4. **Ergonomics and Comfort**
- The riding position is aggressive and uncomfortable for long rides due to the lack of wind protection and minimal suspension travel.
- The seat is thin and hard, and the handlebars are narrow, which can cause fatigue.
5. **Parts Availability and Cost**
- While parts are available, some components (e.g., original carburetors, specific fasteners) can be hard to find and expensive.
- Replacement parts (e.g., forks, shocks, clutch) may require sourcing from specialty vendors or eBay.
- Labor costs for repairs can add up if you don t have mechanical skills.
6. **Safety Concerns**
- No modern safety features (ABS, traction control, disc brakes though the RM100/125 has drum brakes).
- The lack of wind protection and visibility makes it less safe in high-speed or technical terrain.
- Tires are small and prone to punctures or wear, requiring frequent checks.
7. **Insurance and Legal Restrictions**
- Insurance for vintage bikes can be costly, especially if you plan to ride it on public trails or tracks.
- Some trails or parks may restrict or ban older bikes due to safety concerns or noise regulations.
8. **Time-Consuming to Restore**
- If the bike is in poor condition, restoring it to full functionality can take months (or years) of work, especially if you lack mechanical experience.
- Rust, frame damage, or seized components can derail a project.
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### **Key Considerations Before Buying**
1. **Inspect the Engine Thoroughly**
- Check for **crankshaft play** (use a straightedge and feeler gauge to measure endplay).
- Listen for **knocking or grinding** (signs of worn bearings or pistons).
- Test the **compression** (should be consistent across all cylinders; low compression indicates worn rings or valves).
- Look for **oil leaks** around the crankcase or cylinder.
2. **Transmission and Drivetrain**
- Shift smoothly through all gears (especially 3rd gear, as mentioned). Grinding or hesitation indicates worn synchronizers or bent shift forks.
- Check the **chain** for stretch (should have minimal slack; replace if stretched > 1/4 inch).
- Inspect the **sprockets** for wear or damage.
3. **Frame and Suspension**
- Look for **rust or cracks** in the frame, swingarm, or fork legs.
- Test the **forks** for leaks or excessive rebound/dampening.
- Check the **shock** for oil leaks or proper adjustment.
4. **Brakes and Wheels**
- Drum brakes are basic ensure they stop the bike effectively (replace shoes if worn).
- Check **tire tread** and rim condition (bent rims are a common issue).
5. **Electrical System**
- Test the **ignition** (should fire consistently; weak spark indicates a bad coil or points).
- Check the **carburetor** for clogging or fuel leaks.
6. **Documentation and History**
- Ask for **service records** if the bike has been well-maintained, it s a better investment.
- Verify if the bike has been **modified** (e.g., larger carb, different camshaft) some mods void insurance or affect value.
7. **Budget for Repairs**
- Even if the bike runs, budget for:- **Crankshaft replacement** ( $200 $400 including labor).
- **Clutch upgrade** ( $100 $200).
- **Suspension refresh** ( $200 $400 for forks/shocks).
- **Exhaust and muffler** (often rusted; replacement $100 $200).
- **Paint and rust treatment** ( $100 $300).
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### **Conclusion and Recommendation**
#### **Buy If:**- You are **passionate about vintage motorcycles** and value the history, nostalgia, and
Kurt 2 0222brand new nos genuine Suzuki gear SOLD AS. Model lists are for reference only and may not be complete.