KAWASAKI 33040-1084 Swingarm Chain Adjuster Plate

( Manufacturer Part Number: 33040-1084 ), ( Part Type: Adjuster Swingarm Chain Plate ), ( Country Of Origin: Japan ), ( Placement On Vehicle: Left, Right, Rear )

Review KAWASAKI Swingarm Chain Adjuster Plate Oem fits KX125 KX250 KX500 1988

The **Kawasaki 33040-11084 (1988 KX125, KX250, KX500 Swingarm Chain Adjuster Plate)** is a precision-engineered component designed to maintain optimal chain tension and alignment on Kawasaki s iconic off-road motorcycles from the late 1980s. This durable, stamped steel plate serves as the critical interface between the swingarm and the rear sprocket assembly, ensuring smooth power transfer while accommodating the natural flex and movement inherent in off-road riding. Crafted from high-grade steel, the adjuster plate is heat-treated for strength and resistance to wear, making it a long-lasting solution for riders who demand reliability in rugged conditions. Its unique design incorporates a series of precisely drilled holes and slots, allowing for fine-tuned adjustments to the chain s slack, which is essential for preventing premature wear on both the chain and sprocket. The plate s robust construction also helps mitigate the stress placed on the swingarm pivot and rear axle during aggressive riding, reducing the risk of misalignment or premature failure in the drivetrain. Whether used for maintenance, restoration, or replacement, this part is a direct fit for the 1988 KX125, KX250, and KX500 models, ensuring compatibility with the original swingarm mounting points and chain tensioning system. For enthusiasts and mechanics alike, this component is a straightforward yet vital upgrade, helping to preserve the performance and longevity of one of Kawasaki s most legendary off-road bikes.

Buying a **Kawasaki 33040-1084 (1988 KX125, KX250, KX500) swingarm chain adjuster plate** can be a practical solution for restoring or maintaining your bike s drivetrain. Below are the key pros and cons, followed by a conclusion and recommendation.

---

### **Pros of buying a Swingarm Chain Adjuster Plate**

1. **Authentic Fit and Functionality**

The original Kawasaki part is designed specifically for the 1988 KX125, KX250, and KX500 models, ensuring proper alignment and tensioning of the chain. Aftermarket or generic replacements may not match the exact dimensions, leading to improper chain engagement or premature wear.

2. **Reliability and Durability**

Kawasaki parts are built to meet the manufacturer s standards, meaning they are typically made from high-quality materials resistant to bending or cracking over time. This reduces the risk of sudden failure during riding.

3. **Ease of Installation**

Since it is an OEM (Original Equipment Manufacturer) part, it is designed to fit seamlessly with the existing hardware on your bike. No extensive modifications are usually required, and installation can often be done with basic tools.

4. **Compatibility with Other OEM Components**

The adjuster plate works harmoniously with Kawasaki s original chain, sprocket, and rear axle setup. Using non-OEM parts may create compatibility issues, such as improper chain line or excessive slack.

5. **Warranty and Support**

If purchased directly from Kawasaki or an authorized dealer, the part may come with a warranty or return policy. This provides peace of mind in case of defects or issues post-purchase.

6. **Preservation of Bike Value**

For collectors or those planning to sell the bike later, using genuine Kawasaki parts helps maintain the vehicle s originality and resale value. Aftermarket parts can sometimes deter buyers who prioritize authenticity.

7. **Reduced Risk of Drivetrain Damage**

A properly functioning chain adjuster plate ensures even chain wear and prevents excessive stress on the sprocket, bearings, and rear axle. This can extend the lifespan of the entire drivetrain system.

---

### **Cons of buying a Swingarm Chain Adjuster Plate**

1. **Cost**

Genuine Kawasaki parts can be significantly more expensive than aftermarket alternatives. For example, the 33040-1084 plate may cost more than a third-party equivalent, which could be a deterrent for budget-conscious buyers.

2. **Limited Availability**

Older Kawasaki parts, especially those for discontinued models like the 1988 KX series, may be harder to find. Prices could be inflated due to low supply, or the part might require sourcing from specialty dealers or online marketplaces with longer shipping times.

3. **Potential for Counterfeit Parts**

When buying from third-party sellers (e.g., eBay, Facebook Marketplace, or random online stores), there is a risk of receiving counterfeit or reused parts. These may not function correctly or could fail prematurely, voiding any warranty.

4. **Overkill for Minor Repairs**

If the adjuster plate itself is not the root cause of your drivetrain issues (e.g., a stretched chain, worn sprocket, or misaligned rear axle), replacing just the plate may not solve the problem. A more comprehensive inspection might be needed.

5. **Installation Complexity for Beginners**

While the part is relatively straightforward to install, some riders may lack the mechanical experience to ensure it is aligned correctly. Improper installation could lead to chain misalignment or premature wear.

6. **Environmental and Ethical Concerns**

Purchasing new parts for a bike that could otherwise be restored with salvaged components may not align with sustainability goals. However, this is more of a personal consideration than a practical drawback.

7. **Alternative Solutions May Exist**

In some cases, adjusting the existing adjuster plate (if it is still functional) or using a universal chain adjuster could be a cheaper alternative. However, these solutions may not be as precise or long-lasting as an OEM replacement.

---

### **Conclusion**

The Kawasaki 33040-1084 swingarm chain adjuster plate is a **high-quality, reliable, and authentic** solution for restoring or maintaining your 1988 KX125, KX250, or KX500 s drivetrain. Its primary advantages lie in **fitment, durability, and compatibility**, making it ideal for riders who prioritize performance, longevity, and originality. However, the **higher cost, potential availability issues, and risk of counterfeit parts** when buying from untrusted sources must be carefully considered.

If your bike s drivetrain is experiencing **chain slippage, improper tension, or misalignment**, and the adjuster plate is the source of the issue, replacing it with the OEM part is a **strong recommendation**. For riders on a tight budget or those who prefer DIY solutions, a thorough inspection of the existing plate (or a high-quality aftermarket alternative) may be worth exploring first.

---

### **Recommendation**

1. **Verify the Need for Replacement**

- Visible cracks or bends in the plate.

- Uneven chain wear or excessive slack.

- Proper alignment of the chain on the sprocket.

2. **Buy from a Trusted Source**

To avoid counterfeit parts, purchase the **33040-1084 plate from Kawasaki s official website, an authorized dealer, or a reputable motorcycle parts retailer** (e.g., Cycle World, Iron Horse, or local Kawasaki specialists). Avoid deals that seem too good to be true.

3. **Consider a Comprehensive Drivetrain Inspection**

If you re restoring the bike, replace the **chain, sprocket, and rear axle bearings** alongside the adjuster plate to ensure optimal performance and longevity.

4. **Alternative Options**

- If the plate is only slightly damaged, a **universal chain adjuster** (e.g., from DID or Power Grips) may suffice as a temporary fix.

- For budget repairs, check **eBay, Craigslist, or motorcycle swap meets** for used OEM plates, though inspect them carefully for wear.

5. **Installation Tips**

- Use a **chain breaker tool** to remove the old plate.

- Ensure the **new plate is securely bolted** and aligned with the swingarm.

- Adjust the **chain tension** according to Kawasaki s specifications (typically 1/8" to 1/4" of lateral movement at the center of the chain).

**Final Verdict:** If you need a **long-term, reliable fix** and can afford the cost, the Kawasaki 33040-1084 adjuster plate is the **best choice** for your bike. For those looking for a cheaper or more flexible solution, weigh the pros and cons of aftermarket alternatives carefully. Always prioritize **quality and authenticity** to avoid recurring issues.

Details:

Please see pictures for more detailed. The threads are in great shape. It came off a good running 88 KX250, but also fits KX125 and KX500. The part number is 33040-1084.

Good used condition.

part #: 330401084 prices

• $15.00-$20.00

specifications cyclevintagee:

• for models: Kx125, Kx250, Kx500
• for makes: Kawasaki
• for years: 1988
• mpn: 33040-1084
• part type: Adjuster Swingarm Chain Plate
• country of origin: Japan
• placement on vehicle: Left, Right, Rear

general cyclevintagee:

• condition: Used
• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories

payments cyclevintagee:

• other
• wallet: Paypal
• credit card: Visa

seller cyclevintagee:

• city: New Carlisle, Indiana
• rating: 100.0%
• # reviews: 1677

returns cyclevintagee:

• policy: No Returns

offer cyclevintagee:

• started: April 15, 2026
• quantity: 1
• options: Ship-to-home
• sold: 0
• availability: In Stock

shipping cyclevintagee:

• transit: 3-8 Days
• service: USPS Ground Advantage
• class: Standard
• cost: $7.50
• carrier: USPS
• type: Fixed

Kawasaki 33040-1084 Is Similar To:

• 11004-1039 Kawasaki Nos Oem 1981-1982-1983 (28.1% similar) ...(October 24th, 2017)
• 11004-1130 11004-1159 11004-1130 Kawasaki New Oem (21.9% similar) One 1 new oem kawasaki gasket. Part number, satisfaction guaranteed or your money back...(November 30th, 2017)
• 11004-1327 Kawasaki Ninja Head Gasket New Oem 725984001057 (29.2% similar) The picture could be generic. New oem kawasaki gasket head oem part number: 11004-1327ITEM only fits specific model's listed. New oem kawasaki gasket head oem part number: 11004-1327ITEM only fits specific model's listed. Fits: 1998 ninja ZX-9R 1999...(July 18th, 2018)
• 11009-005 Kawasaki Nos Oem Cylinder Base Gasket (23.8% similar) Nos oem kawasaki j1 cylinder base gasket. Please reference the part number for best understanding of model fitment. This part does not include the original packaging. Please with any questions...(July 10th, 2018)
• 11009-1051 Kawasaki Oem Fuel Tank (23.2% similar) Please look at the pictures and ask any questions. This is new old stock not in factory package, kawasaki oem fuel tank cap gasket, research shows it fits: EX305 b1 1983 , KZ1000 A1-4,E1-2,J1-3,K1-2,M1-2,P1-9,R1 ,KZ1300 A1-4,B2 1979 -'82,KZ250 D1-2,L1,W1, 1980 -'83 ,KZ400 h1 1997 , KZ440 A1-4,D1...(May 28th, 2017)
• 11009-1101 Kawasaki Oem Kz1300 Zn1300 (22.4% similar) Satisfaction guaranteed or your money back. One 1 new oem kawasaki gasket...(February 11th, 2018)
• 11009-1208 Kawasaki Nos Cylinder Gasket Oem New (38.1% similar) Office kawasaki box 398. The actual item is shown. Free USA shipping. Authenticity:every item I sell is 100 authentic. Up for sale is this genuine kawasaki gasket as shown only - seen in the above photos. This is in nos unused condition. Shipping: I only ship within the USA unless otherwise noted. ...(March 2nd, 2018)
• 11009-1386 Kawasaki New Oem 1984-85 (29.8% similar) One new 1 oem kawasaki gasket. Satisfaction guaranteed or your money back...(September 26th, 2017)
• 11009-1431 Kawasaki Oem Cylinder Base (22.4% similar) This is new old stock not in factory package, kawasaki oem cylinder base gasket, research shows it fits: kl 110 A1-2,B1 -'88, kilt a1 -'86. Please look at the picture and ask any questions...(May 17th, 2017)
• 11009-1955 Kawasaki Oem Gasket Clutch (22.4% similar) It comes with free shipping. The part is brand new. I'm selling this oem gasket...(September 30th, 2017)
• 11009-2461 Kawasaki Oem Gasket Exhaust (22.2% similar) The part is brand new. It comes with free shipping. I'm selling this oem gasket...(September 30th, 2017)