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  3. SUZUKI EV-13

SUZUKI EV-13 Exhaust Set Power Valve

fits model: Rm, 125. make: Suzuki. year: 1986–1988.

Ev-13 Suzuki Rm 125 Exhaust Valves Set 1986-1988 Power Valve Assy

( Manufacturer Part Number: EV-13 ), ( Type: Exhaust Valve ), ( Machine Type: Off-road Motorcycle ), ( Oe/oem Part Number: 11254-01b40 11255-01b40 11261-01b41 11262-01b41 ), ( Material: Aluminum ), ( Features: Everything In Pictures ), ( Vintage Part: Yes ), ( Finish: Anodized ), ( Country Of Origin: Japan ), ( Performance Part: No )

Review SUZUKI Exhaust Valves Set Power Valve Assy fits RM 125 1986–1988

The **Suzuki EV-13 RM 125 Exhaust Valve Set (1986 1988 Power Valve)** represents a meticulously crafted replacement component designed to restore peak performance and reliability to one of the most iconic off-road motorcycles of the late 1980s. Engineered specifically for the legendary **Suzuki RM 125 Power Valve** model renowned for its lightweight frame, aggressive styling, and trail-conquering capabilities this valve set ensures a seamless fit while maintaining the engine s original precision. Crafted from high-grade **forged steel**, these valves are precision-machined to exacting tolerances, guaranteeing durability under the demanding conditions of dirt tracks, rocky trails, and high-revving throttle applications. The **exhaust valves** in this set are designed to withstand extreme heat and mechanical stress, preventing premature wear, pitting, or warping that can compromise engine efficiency and power output. Whether you re restoring a classic RM 125 to its former glory or upgrading an existing bike for improved performance, this valve set delivers the reliability and responsiveness expected from Suzuki s legendary off-road engineering. Perfect for both DIY enthusiasts and professional mechanics, these valves are a direct-fit solution that preserves the engine s original performance characteristics while extending its lifespan through superior materials and construction. With a focus on authenticity and performance, this exhaust valve set is an essential upgrade for any RM 125 owner seeking to maintain the spirit of the Power Valve era.

### **Pros and Cons of Buying a Suzuki EV-13 RM 125 Exhaust Valve Set (1986 1988 Power Valve)**

#### **Pros:**

1. **Improved Performance** A new or high-quality exhaust valve set can enhance engine efficiency by allowing better gas exchange, which may lead to slightly improved throttle response and power output, especially if the original valves were worn or leaking.

2. **Prevents Engine Damage** Worn or cracked exhaust valves can cause misfires, excessive carbon buildup, or even catastrophic failure if they break inside the cylinder. Replacing them proactively can extend engine life.

3. **Better Fuel Efficiency** If the original valves were restricting airflow, a fresh set could help optimize combustion, potentially improving fuel economy.

4. **Prevents Coolant Leaks** The Power Valve (a unique feature on these early Suzuki models) regulates exhaust gas temperature to prevent overheating. A faulty valve can lead to coolant loss and engine damage. Replacing it ensures proper temperature control.

5. **Cost-Effective Maintenance** Compared to a full engine rebuild or replacement, valve replacement is a relatively inexpensive fix that can save money in the long run.

6. **Compatibility** Since these parts are designed specifically for the 1986 1988 Suzuki EV-13 RM 125, they fit perfectly without modification, reducing installation risks.

7. **Easy Installation** The process is straightforward for a mechanic with basic engine knowledge, and many parts come with clear instructions.

#### **Cons:**

1. **Limited Performance Gain** While a valve replacement may improve reliability, the gains in power or speed will be modest unless combined with other modifications (e.g., carburetor tuning, exhaust upgrades).

2. **Potential for Counterfeit Parts** If purchasing from an untrusted seller, there s a risk of receiving low-quality or fake parts that fail prematurely.

3. **Labor Dependency** If the buyer lacks mechanical experience, professional installation may be required, adding to the cost.

4. **Power Valve Complexity** The Power Valve system is unique to these early Suzuki models. If the issue stems from a failing valve spring or guide rather than the valve itself, replacing just the valve may not fully resolve the problem.

5. **Wear on Other Components** If the engine has significant wear (e.g., worn piston rings, cylinder damage), replacing just the valves won t fully restore performance.

6. **Availability of Parts** While not uncommon, finding a reputable supplier for OEM or high-quality aftermarket valves may require some effort, especially for older models.

7. **Time-Consuming for DIYers** Removing and reinstalling the cylinder head, valves, and Power Valve requires disassembly of the engine, which can be time-intensive for those unfamiliar with motorcycle maintenance.

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### **Conclusion**

Replacing the exhaust valve set (including the Power Valve) on a 1986 1988 Suzuki EV-13 RM 125 is a **practical and cost-effective preventive maintenance measure** that can prevent engine failure, improve reliability, and maintain optimal performance. While the performance gains may be incremental, the long-term benefits such as avoiding costly repairs from valve-related issues make it a worthwhile investment for owners who prioritize engine longevity.

However, if the bike exhibits other symptoms (e.g., rough idling, loss of power, or excessive oil consumption), a **comprehensive engine inspection** should be conducted to address underlying issues. Additionally, sourcing **genuine or high-quality aftermarket parts** from a trusted supplier is crucial to ensure durability.

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### **Recommendation**

1. **If the primary concern is reliability and preventing engine damage**, proceed with the valve replacement. This is especially important if the bike shows signs of valve wear (e.g., misfires, blue smoke from the exhaust, or overheating due to a failing Power Valve).

2. **If the goal is performance tuning**, consider pairing the valve replacement with other modifications (e.g., a high-flow carburetor, performance exhaust, or camshaft upgrade) for more noticeable gains.

3. **For DIYers**, ensure you have the necessary tools (socket set, torque wrench, valve spring compressor) and follow a **step-by-step guide** (such as a Suzuki service manual or reputable online tutorial) to avoid mistakes.

4. **For non-mechanics**, consult a **trusted motorcycle mechanic** familiar with Suzuki engines to perform the replacement and inspect the rest of the engine for wear.

5. **Verify part quality** opt for **OEM Suzuki parts** or well-reviewed aftermarket brands (e.g., Akebono, NGK, or reputable valve manufacturers) to avoid counterfeit or low-quality components.

**Final Verdict:** **Worth the investment** for reliability, but prioritize quality parts and professional installation if unsure. If the bike is used for daily riding, this maintenance step is highly recommended.

Details:

part #: ev13 prices

  • $175.00-$239.00

specifications valvemotorcycleaz:

  • for models: Rm, 125
  • for makes: Suzuki
  • for years: 1986-1988
  • mpn: Ev-13
  • type: Exhaust Valve
  • machine type: Off-road Motorcycle
  • oe/oem part number: 11254-01b40 11255-01b40 11261-01b41 11262-01b41
  • material: Aluminum
  • features: Everything In Pictures
  • vintage part: Yes
  • finish: Anodized
  • country of origin: Japan
  • performance part: No

payments valvemotorcycleaz:

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shipping valvemotorcycleaz:

  • class: Standard
  • carrier: USPS
  • service: USPS Ground Advantage
  • transit: 5-12 Days
  • cost: $8.06
  • type: Calculated

general valvemotorcycleaz:

  • condition: Used
  • Engines Engine Parts > Valvetrain Components > Engine Valves

seller valvemotorcycleaz:

  • rating: 99.4%
  • # reviews: 820
  • city: Saginaw, Michigan

offer valvemotorcycleaz:

  • availability: In Stock
  • started: May 14, 2026
  • quantity: 1
  • best offers: True
  • options: Ship-to-home
  • sold: 0

returns valvemotorcycleaz:

  • policy: Returns Accepted
  • paid by: Seller
  • time: 30 Days
for models: rm, 125, for makes: suzuki, for years: 1986-1988, type: exhaust valve, machine type: off-road motorcycle, oe/oem part number: 11254-01b40 11255-01b40 11261-01b41 11262-01b41, features: everything in pictures, vintage part: yes, finish: anodized, country of origin: japan, performance part: no,
category: motorcycle parts > engines engine parts > valvetrain components > engine valves, material: aluminum, sku: 8710396982553891,
Suzuki EV-13 Is Similar To:
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2 offers $175.00–$239.00 USD
  • For parts or not working. Offer #1 priced at $175.00 + $8.06 shipping estimate = $183.06* total. +$8.06 shipping
  • New. Offer #2 priced at $239.00 + $31.00 shipping estimate = $270.00* total. Guide length 52,4 mm. Suzuki RM 125 Exhaust Valve Power Valve Set (4pcs).+$31.00 shipping

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