HONDA 18531-KZ4-A90 Exhaust Power Valve Spring

( Manufacturer Part Number: 18531-KZ4-A90 ), ( Part Type: Valve Spring Exhaust ), ( Country/region Of Manufacture: Japan )

Review HONDA Exhaust Power Valve Spring fits CR125R CR 125 1999–2002

Honda 18531-KZ4-A90 Exhaust Power Valve Spring for CR125R CR 125 (1999-2002)

The Honda 18531-KZ4-A90 Exhaust Power Valve Spring is a crucial replacement part for your 1999-2002 CR125R CR 125 motorcycle. This high-performance spring plays a vital role in the proper functioning of the exhaust valve system, ensuring optimal engine performance and power delivery.

Crafted with precision and durability in mind, this power valve spring is designed to withstand the rigors of high-speed off-road racing. It features a hard-wearing, corrosion-resistant material that is capable of maintaining its integrity even under extreme conditions.

The Honda 18531-KZ4-A90 Exhaust Power Valve Spring is specifically engineered to fit the CR125R CR 125 models of the specified years. It is a direct replacement for the original equipment manufacturer (OEM) part, ensuring a perfect fit and minimal installation time.

Installing this power valve spring on your CR125R CR 125 can help improve the engine's responsiveness, power, and overall performance. It is an essential component for racers looking to gain a competitive edge or for those simply seeking to maintain the optimal performance of their motorcycle.

In conclusion, the Honda 18531-KZ4-A90 Exhaust Power Valve Spring is a reliable and high-quality replacement part for your CR125R CR 125. By choosing this part, you are investing in the performance and longevity of your motorcycle, ensuring that it continues to deliver the power and excitement you expect from a Honda CR125R CR 125.

Analysis of Honda 18531-KZ4-A90 Exhaust Power Valve Spring for CR125R/CR125

1. OEM Part: This exhaust power valve spring is an original equipment manufacturer (OEM) part, ensuring it fits perfectly with your Honda CR125R/CR125 and maintains the bike's performance and safety standards.

2. Enhanced Performance: The power valve spring is designed to optimize engine performance by precisely controlling exhaust valve opening and closing, thereby improving power delivery and responsiveness.

3. Durability: As an OEM part, the Honda 18531-KZ4-A90 power valve spring is built to last, providing long-term reliability and minimizing the need for frequent replacements.

4. Reduced Engine Noise: A properly functioning power valve spring contributes to a smoother and quieter engine operation, enhancing the riding experience.

1. Cost: OEM parts, in general, tend to be more expensive compared to aftermarket alternatives. This may be a concern for budget-conscious consumers.

2. Availability: Depending on the region and the specific year of your CR125, finding this exact part may be challenging, especially if it is no longer in production.

3. Limited Customization: Since it is an OEM part, the Honda 18531-KZ4-A90 power valve spring may not offer the same level of customization as aftermarket parts, which can cater to specific performance requirements or preferences.

If you prioritize a perfect fit, long-lasting performance, and a smoother riding experience, the Honda 18531-KZ4-A90 exhaust power valve spring is an excellent choice for your CR125R/CR125. However, if you're looking for cost savings or customization options, you may want to explore aftermarket alternatives. It is essential to consider your specific needs, budget, and availability when making a decision.

Details:

I do my best to describe the condition of parts in and pictures. For sale is the exhaust power valve spring that was removed from a 2000 Honda CR125R. The condition of this item is displayed in the pictures above.

part #: 18531kz4a90 prices

• $38.41-$85.00

specifications valvemotorcycleaz:

• for models: Cr125r, Cr, 125
• for makes: Honda
• for years: 1999-2002
• mpn: 18531-kz4-a90
• part type: Valve Spring Exhaust
• country/region of manufacture: Japan

offer valvemotorcycleaz:

• options: Ship-to-home
• availability: In Stock
• quantity: 1
• sold: 0
• started: August 14, 2025

general valvemotorcycleaz:

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

seller valvemotorcycleaz:

• city: Westerville, Ohio
• rating: 100.0%
• # reviews: 2621

payments valvemotorcycleaz:

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

shipping valvemotorcycleaz:

• type: Fixed
• service: USPS Ground Advantage
• cost: $4.95
• class: Standard
• transit: 5-11 Days
• carrier: USPS

returns valvemotorcycleaz:

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

Honda 18531-KZ4-A90 Is Similar To:

• 1 Au-09011imx Bronco Engine Intake Valve Honda Replaces Oem (27.5% similar) After seeing that success forward was born. Many other companies just put up what they think the parts fit. A deal was made and that inventory sold online over the next few months as sideline job. Shipping in continental us is free. We branched out into specific parts people need to keep their ...(April 24th, 2018)
• 1 Au-09189imx Bronco Engine Intake Valve Honda Trail Passport (28.6% similar) Shipping in continental us is free. Many other companies just put up what they think the parts fit. More excess inventories were hunted down and sold. We branched out into specific parts people need to keep their machines going. A deal was made and that inventory sold online over the next few months...(May 11th, 2018)
• 1 Xu-09502imx Psychic Engine Intake Valve Honda (31.9% similar) More excess inventories were hunted down and sold. After seeing that success forward was born. Many other companies just put up what they think the parts fit. A deal was made and that inventory sold online over the next few months as sideline job. This provides reduced friction for quicker higher ...(July 23rd, 2018)
• 00000 Vertex Honda Trx300ex Valve (30.8% similar) Honda TRX300EX valve oil seals kit this is a brand new set of vertex and seal. Please review all pictures to assess the condition of item. Includes what is in the photos. If you are expecting new parts please visit your local dealer. Used parts have been and will show signs of wear...(February 22nd, 2018)
• 021-0633 Nos Honda Exhaust Valve Set (39.3% similar) From a parts house buy out. In the original box packaging. P/N L512125 honda civic full set of 4 nos honda exhaust valves. Made in japan...(December 22nd, 2016)
• 066394 Pro Intake Valve Stem Seal Honda (25.5% similar) Non-radial, pattern and tread compound requirements, inflation recommendations front-to-rear tire matching. Buyer pays return shipping. Always match the front and rear tires for optimal handling, safety performance. Always give tires a gentle run-in period of 100 miles to get the feel new this means...(September 27th, 2018)
• 07hmd-ml00101 Honda New Nos Oem Valve Guide Driver Tool (25.4% similar) Buyer pays return shipping cost. Most of, if not all used parts have scratches, scuffs and other minor flaws. Please understand that all used parts will have wear or cosmetic flaws of some kind from previous use. 5MM valve guide driver tool 07HMD-ML00101 this is new...(June 1st, 2018)
• 0926-0049 Vesrah Exhaust Valve For Honda (41.4% similar) ...(October 31st, 2018)
• 0926-0052 Vesrah Intake Valve For Honda Rubicon (28.8% similar) ...(October 31st, 2018)
• 0926-0053 Vesrah Exhaust Valve For Honda Rubicon (40.3% similar) ...(October 31st, 2018)
• 0926-0068 Vesrah Intake Valve For Honda Rancher (27.1% similar) ...(October 31st, 2018)