SUZUKI 61100-41891 Rear Swingarm 61100-41892

( Manufacturer Part Number: 61100-41891 ), ( Machine Type: Off-road Motorcycle ), ( Color: Silver ), ( Material: Aluminum ), ( Vintage Part: Yes ), ( Placement On Vehicle: Rear ), ( Type: Swingarm ), ( Oe/oem Part Number: 61100-41891, 61100-41892 ), ( Universal Fitment: No ), ( Country Of Origin: Japan )

Review SUZUKI Rare Vintage Rear Swingarm fits RM125 1978

The **Suzuki 61100-41891 (1978 RM125 Rear Swingarm)** and its paired counterpart, the **61100-41892**, represent a critical and often overlooked yet essential component for restoring or maintaining the iconic **Suzuki RM125** a legendary off-road motorcycle from the late 1970s. Crafted from high-quality **mild steel**, these swingarms are designed to endure the rigorous demands of motocross, enduro, and trail riding, where durability and reliability are paramount. The **61100-41891** serves as the **left-side swingarm**, while the **61100-41892** is the **right-side counterpart**, both featuring a **single-piece, welded construction** that ensures structural integrity while minimizing weight. The arms are machined to precise tolerances, with **smooth, polished surfaces** where they interface with the rear axle and shock mounts, reducing friction and preventing premature wear. A defining feature of these swingarms is their **integrated mounting points** for the **rear suspension**, including the **shock eyelets** and **rear axle pivot**, which align seamlessly with the RM125 s stock or aftermarket suspension systems. The **61100-41891 and 61100-41892** are engineered to accommodate the **1978 RM125 s 10-inch rear wheel**, providing the necessary clearance for tires ranging from standard motocross slicks to knobby off-road options. For restorers and enthusiasts seeking authenticity, these swingarms replicate the original factory design, complete with **correctly positioned gussets and reinforcement welds** that enhance rigidity without adding excessive bulk. Whether replacing a worn-out original part or upgrading a modified RM125, these swingarms deliver a perfect blend of **historical accuracy, strength, and performance**, ensuring that riders can confidently tackle rough terrain while preserving the classic aesthetic of the RM125. Proper installation requires alignment with the **rear axle, shock linkage, and swingarm pivot**, often necessitating the use of **O-rings, bushings, and the correct torque specifications** to maintain optimal handling and longevity. For those seeking a complete rebuild or a faithful restoration, these swingarms are an indispensable addition, bridging the gap between vintage authenticity and modern reliability.

### Pros and Cons of buying a Suzuki RM125 Rear Swingarm (Part Numbers 61100-41891 and 61100-41892, 1978 Model)

1. **Compatibility and Fitment** These swingarms are designed specifically for the 1978 Suzuki RM125, ensuring an exact fit without modification. They are common aftermarket parts, making them easier to source than OEM replacements.

2. **Durability and Build Quality** Suzuki s components, even for older models, were generally robust. The swingarm is likely made from chromoly steel, which is strong and resistant to bending or cracking over time. If well-maintained, it can last decades.

3. **Cost-Effective Replacement** Compared to buying a complete bike or restoring an entire RM125, replacing just the swingarm is a budget-friendly fix. Prices for these parts are relatively low, especially if sourced from used or aftermarket suppliers.

4. **Easier Maintenance** Replacing a broken or worn swingarm is a straightforward repair. It requires basic mechanical skills, a jack, and standard tools. No complex disassembly is needed beyond removing the wheel and rear suspension components.

5. **Availability of Alternatives** If the original swingarm is damaged, there are often aftermarket or remanufactured options available. Some suppliers offer upgraded versions with improved welds or reinforced designs.

6. **Long-Term Reliability** If the swingarm is in good condition, it can serve as a reliable component for years, especially if the bike is used for light riding or track days rather than heavy abuse.

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1. **Age and Wear** The swingarm, being part of a 1978 bike, may already show signs of fatigue, rust, or weld cracks, especially if the bike has been stored improperly or ridden aggressively. Older metal can become brittle over time.

2. **Potential for Hidden Damage** If the swingarm has been previously repaired (e.g., with poor welding), it may have weak spots that fail under stress. Inspecting it closely for cracks, uneven welds, or corrosion is crucial before purchasing.

3. **Limited Aftermarket Support** While these parts are available, they may not be as widely stocked as parts for newer bikes. Sourcing them could require searching through specialty motorcycle shops, eBay, or international suppliers.

4. **Compatibility with Modified Bikes** If the RM125 has been heavily modified (e.g., lowered, widened, or fitted with aftermarket suspension), the stock swingarm may not align perfectly with the new geometry. A custom or upgraded swingarm might be needed.

5. **Rust and Corrosion** Older swingarms, especially those exposed to moisture or off-road conditions, can develop rust. This weakens the structure and may require grinding or replacement of corroded sections.

6. **Skill Dependency** Installing the swingarm correctly requires attention to detail, especially when aligning the rear suspension and adjusting the chain tension. Poor installation can lead to handling issues or premature wear.

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Buying the Suzuki RM125 rear swingarm (61100-41891 or 61100-41892) for a 1978 model is a practical and cost-effective solution if the original is damaged or worn. The parts are durable, widely compatible, and relatively inexpensive, making them a smart choice for restoration or repair. However, potential buyers should thoroughly inspect the swingarm for cracks, rust, or poor welds before purchasing. If the swingarm is in poor condition, investing in a remanufactured or aftermarket version may be worth the extra cost for peace of mind.

- **If the swingarm is in good condition** (no visible cracks, minimal rust, and solid welds), proceed with the purchase as a direct replacement. This is the most straightforward and budget-friendly option.

- Source a used or remanufactured swingarm from a trusted supplier to ensure reliability.

- Consider upgrading to a reinforced or aftermarket swingarm if the bike has been modified or will see heavy use.

- **Always inspect the rest of the bike s rear end** (axle, shock mounts, and suspension) to ensure they are compatible and in good condition before installation.

- **Consult a mechanic** if unsure about the swingarm s integrity or if installing it yourself is not feasible.

For most casual riders or restorers, the stock or aftermarket swingarm is a solid choice, provided it meets quality standards. Prioritize condition over price to avoid future failures.

Details:

FITMENT: THIS PART WAS REMOVED FROM A 1978 SUZUKI RM125. Large packages cannot be delivered to P.O. Carburetors and Fuel Injection components may require cleaning for optimal performance.

part #: 6110041891 prices

• $208.99-$219.95

specifications febocy:

• for models: Rm125
• for makes: Suzuki
• for years: 1978
• mpn: 61100-41891
• machine type: Off-road Motorcycle
• color: Silver
• material: Aluminum
• vintage part: Yes
• placement on vehicle: Rear
• type: Swingarm
• oe/oem part number: 61100-41891, 61100-41892
• universal fitment: No
• country of origin: Japan

payments febocy:

• wallet: Google-pay
• credit card: Diners-club
• other

general febocy:

• Motorcycle Scooter Parts Accessories > Body Frame > Fenders
• condition: Used

shipping febocy:

• class: Standard
• carrier: USPS
• type: Calculated
• service: USPS Ground Advantage
• transit: 3-9 Days
• cost: $10.15

returns febocy:

• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer

seller febocy:

• city: Grants Pass, Oregon
• # reviews: 6722
• rating: 99.9%

offer febocy:

• availability: In Stock
• best offers: True
• options: Ship-to-home
• quantity: 1
• started: May 20, 2026
• sold: 0

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