NICHE MK1001146 Top Big End Repair Kit 803467059716 36R-11181-00-00 44MM 18U-11631-00-A0

( Brand: Niche ), ( Manufacturer Part Number: MK1001146 ), ( Type: Cylinder Kit ), ( Items Included: Piston, Piston Rings, Wristpin ), ( Circlips: 2, Needle Bearing, Head Gasket, Base Gasket, Ngk Spark Plug ), ( Placement On Vehicle: Front ), ( Oe/oem Part Number: 517-11181-01-00, 3pt-11351-00-00, 36r-11636-00-00 ), ( Color: Gray ), ( Country Of Origin: China ), ( Universal Fitment: No ), ( Manufacturer Warranty: 2 Years ), ( California Prop 65 Warning: Warning, Which Is Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. For More Information, Visit Www.p65warnings.ca.gov ), ( Ipn: 36r-11181-00-00 ), ( Compatible Type: Motorcycle ), ( Compatible Year Range: 1979-2017 ), ( Compatible Model: Y-zinger Pw50 ), ( Piston Style: Big Bore ), ( UPC: 803467059716 )

Review NICHE Big Bore 44mm Top End Repair Kit For Yamaha Y zinger fits ZINGER PW50

Introducing the MK1001146 Big 44mm Top End Repair Kit specifically designed for the Yamaha Y-Zinger PW50 18U-11631-00-A0. This comprehensive kit includes all the necessary components to restore your PW50's top end to optimal performance.

The heart of the kit is the oversized 44mm cylinder and piston kit. The cylinder is precision-machined from high-quality aluminum alloy, ensuring a perfect fit and exceptional durability. The piston, on the other hand, is engineered for superior compression and power output. It features a new ring set, including a compression ring, oil control ring, and transfer ring, designed to reduce friction and increase engine efficiency.

Additionally, the kit includes a new crankshaft, which is essential for proper engine function. The crankshaft is meticulously crafted from heat-treated steel, ensuring a long service life and improved power transfer.

The kit also comes with a set of new piston rings, which are crucial for maintaining proper sealing between the piston and cylinder. These rings are made from high-quality materials that provide excellent sealing and durability.

Moreover, the MK1001146 Big 44mm Top End Repair Kit includes a new set of gaskets. These gaskets ensure a perfect seal between various engine components, preventing leaks and ensuring optimal engine performance.

Lastly, the kit includes all the necessary hardware and installation instructions, making the installation process as straightforward as possible. With this complete kit, you'll have all the parts you need to restore your Yamaha Y-Zinger PW50's top end to like-new condition.

In summary, the MK1001146 Big 44mm Top End Repair Kit is a must-have for any Yamaha PW50 18U-11631-00-A0 owner looking to restore their engine to peak performance. With its high-quality components, this kit is designed to provide exceptional durability, improved power output, and reliable performance.

MK1001146 Big 44mm Top End Repair Kit for Yamaha YZF-PW50: A Detailed Analysis

The MK1001146 Big 44mm Top End Repair Kit for Yamaha YZF-PW50 is a popular aftermarket solution for those seeking to revitalize their engine's performance. In this analysis, we will discuss the key features, advantages, and potential drawbacks of this product to help you make an informed purchasing decision.

1. Designed specifically for the Yamaha YZF-PW50 (18U-11631-00-A0) model

2. Includes all necessary parts for a top end rebuild

3. Enlarges the cylinder bore to 44mm for improved power and torque

4. CNC machined piston and ring set

5. High-quality, forged aluminum crankshaft and connecting rod

1. Increased power and torque: The 44mm bore size results in improved engine performance, making the ATV more responsive and faster.

2. Durability: The high-quality materials used in the manufacture of this kit ensure long-lasting performance and reliability.

3. Easy installation: The kit is designed to be a direct replacement for the stock components, making installation straightforward and hassle-free.

1. Cost: The MK1001146 kit is a more expensive option compared to a standard top end rebuild or stock OEM parts.

2. Power increase may require adjustments: With the increased power output, some riders may find that the stock carburetor or ignition system is no longer sufficient, necessitating separate upgrades.

The MK1001146 Big 44mm Top End Repair Kit for Yamaha YZF-PW50 offers significant power and performance improvements for those seeking to enhance their ATV's capabilities. While the cost may be a deterrent for some, the increased durability and reliability of the high-quality components make this an attractive option for those willing to invest in their machine. Ultimately, the decision to purchase this kit depends on your budget, desired performance level, and the willingness to potentially undertake additional upgrades to ensure optimal power delivery.

If you are looking to significantly boost the power and performance of your Yamaha YZF-PW50, the MK1001146 Big 44mm Top End Repair Kit is an excellent choice. Keep in mind that this upgrade may necessitate additional investments to ensure proper power delivery, such as carburetor or ignition system adjustments. Ultimately, this kit represents a worthwhile investment for those seeking a more powerful and responsive ATV experience.

Details:

All of the parts included are direct replacement for easy, hassle-free installation with no modifications or adjustments needed. This NICHE product includes a Limited Warranty. NICHE Big Bore 44mm Top End Repair Kit for Yamaha Y-Zinger PW50 18U-11631-00-A0:: Cylinder Part Number: MK1001146, Includes: Piston, Piston Rings, Wristpin, Circlips 2, Needle Bearing, Head Gasket, Base NGK Spark Plug, Fits Vehicles: Y-Zinger: 1981 -1999, PW50: 1981 -2017. The Molly-coated performance Big Bore Piston Kit increases the stock compression.

Included in this kit is: Piston, Piston Rings, Wristpin, Needle Bearing, Circlips 2, Spark Plug, Head Gasket and Base. Providing you with the same reliability that you've come to expect from factory parts at an incredible price. The high-performance gasket kit gives your engine more reliability and longevity. Everything has been engineered and tested to exceed original equipment standards performance.

The custom designed Piston also helps increase power in the low to mid PMS.

part #: mk1001146 prices

• $36.95-$96.95

specifications pistondon:

• for models: Pw50, Zinger
• for makes: Yamaha
• brand: Niche
• mpn: Mk1001146
• type: Cylinder Kit
• items included: Piston, Piston Rings, Wristpin
• circlips: 2, Needle Bearing, Head Gasket, Base Gasket, Ngk Spark Plug
• placement on vehicle: Front
• oe/oem part number: 517-11181-01-00, 3pt-11351-00-00, 36r-11636-00-00
• color: Gray
• country of origin: China
• universal fitment: No
• manufacturer warranty: 2 Years
• california prop 65 warning: Warning, Which Is Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. For More Information, Visit Www.p65warnings.ca.gov
• ipn: 36r-11181-00-00
• compatible type: Motorcycle
• compatible year range: 1979-2017
• compatible model: Y-zinger Pw50
• piston style: Big Bore
• upc: 803467059716

general pistondon:

• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Gaskets, Seals Kits
• condition: New

seller pistondon:

• city: New Baltimore, Michigan
• # reviews: 193283
• rating: 99.4%

returns pistondon:

• policy: Returns Accepted
• paid by: Seller
• time: 60 Days

offer pistondon:

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

payments pistondon:

• wallet: Apple-pay
• other
• credit card: Visa

shipping pistondon:

• cost: $0.00
• class: Standard, Expedited, One-day
• transit: 4-8 Days
• type: Fixed
• carrier: USPS, UPS
• service: USPS Ground Advantage, UPS 2nd Day Air, UPS Next Day Air Saver

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