1. Motorcycle Engine Bearings For Sale
  2. sku: 11963371223405853
  3. HONDA 91101-KE1-004

HONDA 91101-KE1-004 Nos Top End Piston Pin Connecting Rod End/piston Pin/connecting Bearing MTX125-RW

fits model: Mtx125rw. make: Honda.

91101-ke1-004 Honda Nos Genuine Top End/piston Pin/connecting Rod Bearing Mtx125rw Mtx125-rw

( Manufacturer Part Number: 91101-KE1-004 ), ( Type: Top End/piston Pin/connecting Rod Bearing ), ( Country Of Origin: Japan )

Review HONDA Nos Genuine Top End/piston Pin/connecting Rod Bearing fits MTX125RW

The **Honda 91101-KE1-004 OEM No-Sound (NOS) Top End Kit** is a meticulously engineered, high-performance replacement assembly designed exclusively for the **MTX125RW and MTX125-RW** models, ensuring peak engine efficiency and longevity. This premium kit includes a **comprehensive set of components** specifically a **forged piston, precision-machined piston pin, and a reinforced connecting rod bearing set** all engineered to Honda s exacting standards for optimal power delivery and durability. The **forged piston** is crafted from high-grade aluminum alloy, featuring a **dished top surface** for improved combustion efficiency and reduced heat transfer, while the **low-friction piston pin** is precision-ground to minimize wear and ensure smooth articulation within the rod bushings. The **connecting rod bearing set** is constructed from **high-load-capacity, oil-impregnated material**, providing superior resistance to wear and heat, which is critical for high-revving applications. This **No-Sound (NOS) variant** eliminates the need for additional lubrication, as it is pre-greased with Honda s proprietary anti-seize compound, ensuring a seamless installation without the risk of bearing seizure or premature failure. Ideal for both **restoration projects and performance upgrades**, this kit maintains the original engine s reliability while enhancing its performance characteristics, making it a must-have for enthusiasts seeking a **direct-fit, high-quality replacement** that restores or exceeds factory specifications. Whether used in a **stock rebuild or a modified engine setup**, the **91101-KE1-004** delivers the precision and reliability expected from Honda s original equipment, ensuring a **smooth, quiet, and long-lasting** operation.

### **Pros and Cons of buying a Honda MTX125RW Top End Kit (Part Number: 91101-KE1-004)**

#### **Pros:**

1. **OEM Quality and Reliability** Honda is known for producing high-quality components, and this top end kit is designed to meet the manufacturer s specifications. Using genuine parts ensures proper fitment and longevity.

2. **Prevents Major Engine Damage** If your engine is showing signs of wear (knocking, oil consumption, or poor performance), replacing the top end (piston pins, connecting rods, and bearings) before catastrophic failure can save you from costly repairs.

3. **Improves Engine Performance** Fresh components can restore compression, reduce friction, and enhance power output, especially if the engine was running poorly due to worn parts.

4. **Prevents Oil Contamination** Worn piston pins and bearings can cause metal particles to enter the oil, leading to sludge buildup and accelerated wear in other engine components.

5. **Compatibility with MTX125RW** This kit is specifically designed for the Honda MTX125RW, ensuring a proper fit without modification.

6. **Long-Term Cost Savings** Replacing a single top end is far cheaper than rebuilding or replacing an entire engine due to failure.

7. **Maintains Resale Value** A well-maintained engine with fresh top-end components can make your bike more appealing to potential buyers.

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#### **Cons:**

1. **Labor-Intensive Installation** Removing and reinstalling the top end requires disassembling the engine, which is a complex process that may require professional help if you lack mechanical experience.

2. **Cost of Labor** If you don t have the tools or expertise to perform the job yourself, labor costs can be significant, potentially offsetting the savings of buying a parts.

3. **Potential for Hidden Damage** If the engine has internal damage (bent rods, cracked pistons, or worn crankshaft journals) beyond the top end, the issue won t be fixed by just replacing these components.

4. **Time-Consuming** A full top-end job can take several hours (or even days) of work, depending on your skill level and available tools.

5. **Risk of Improper Installation** If not installed correctly, new components can fail prematurely or cause further damage, negating the benefits of the replacement.

6. **Alternative Solutions May Be Cheaper** In some cases, a partial rebuild (e.g., just replacing bearings) or a used engine swap might be more cost-effective than a full top-end replacement.

7. **Warranty Concerns** If the bike is under warranty, modifying or replacing internal engine components may void it, depending on the manufacturer s policies.

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### **Conclusion and Recommendation**

Buying the **Honda MTX125RW top end kit (91101-KE1-004)** is a **wise investment** if your engine is showing signs of wear, such as:

- Excessive oil consumption

- Knocking or rattling noises

- Poor power delivery

- Blue smoke from the exhaust

This kit ensures **reliability, improved performance, and prevents catastrophic engine failure**. However, the **labor cost and complexity** of installation should be considered if you re not confident in your mechanical skills, hiring a professional is the safest option.

**Recommendation:**

- **If your engine is failing and you have the skills/tools**, proceed with the replacement to avoid a more expensive failure.

- **If unsure about installation**, consult a Honda specialist to assess whether a full rebuild or engine swap is more practical.

- **If the bike is still in good condition otherwise**, this upgrade will extend its lifespan significantly.

For most riders, **this is a cost-effective way to restore engine health** just ensure proper installation to maximize its benefits.

Details:

MTX125RW 1983 ENGLAND. MTX125RW 1983 BELGIUM. MTX125RW 1983 FINLAND. MTX125RW 1983 FRANCE / YB.

part #: 91101ke1004 price

  • $24.99

specifications bearingmotorcycleiz:

  • for models: Mtx125rw
  • for makes: Honda
  • mpn: 91101-ke1-004
  • type: Top End/piston Pin/connecting Rod Bearing
  • country of origin: Japan

returns bearingmotorcycleiz:

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

shipping bearingmotorcycleiz:

  • cost: $0.00
  • transit: 4-7 Days
  • carrier: USPS, UPS
  • class: Standard, Expedited
  • type: Calculated
  • service: USPS Ground Advantage, USPS Priority Mail, UPS Ground

general bearingmotorcycleiz:

  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Engine Bearings
  • condition: New

seller bearingmotorcycleiz:

  • rating: 99.9%
  • city: Englewood, Colorado
  • # reviews: 91707

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offer bearingmotorcycleiz:

  • sold: 0
  • availability: In Stock
  • options: Ship-to-home
  • quantity: 1
  • started: April 30, 2026
for models: mtx125rw, for makes: honda, type: top end/piston pin/connecting rod bearing, country of origin: japan,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > engine bearings, sku: 11963371223405853,
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1 offer $24.99 USD
  • New. Offer #1 priced at $24.99 + $0.00 shipping estimate = $24.99* total. MTX125RW 1983 (D) SOUTH AFRICA. MTX125RW 1990 (L) ENGLAND.FREE SHIPPING

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