WISECO 4PKYFJAGBK Top End Rebuild Kit 73MM 1.00OB 136IN

( Brand: Wiseco ), ( Manufacturer Part Number: 4PKYFJAGBK ), ( California Prop 65 Warning: Warning, And Birth Defects Or Other Reproductive Harm. ), ( Material: Forged Aluminum ), ( Length: 9.000 ), ( Compatible Model: Indy 550 136in ), ( Displacement: 559cc ), ( Oem Piston Bore Size: 73 Mm ), ( Piston Over Bore Amount: 1 Mm ), ( Package Quantity: Each )

Review WISECO Top End Rebuild Kit 73mm Polaris 136in fits INDY 550 2000–2003

The WiseCo 4pkyFJAGBK Top End Rebuild Kit is specifically designed for the Polaris Indy 550 snowmobile model with a 136-inch track length and a 73mm, 1.000-inch bore size engine. This top end rebuild kit is an essential tool for snowmobile enthusiasts who want to ensure optimal engine performance and longevity.

The kit includes a comprehensive collection of high-quality components that are needed to rebuild the engine's cylinder head and piston assembly. Each part is meticulously engineered to fit perfectly and provide superior durability and reliability.

The cylinder head gasket is made from a high-performance material that ensures a tight seal between the cylinder head and the engine block. The piston rings are made from a heat-resistant material that reduces friction and ensures a snug fit in the cylinder bore. The piston pin and connecting rod bushings are engineered to provide a precise fit and minimize wear.

The WiseCo 4pkyFJAGBK Top End Rebuild Kit also includes new valves, valve springs, and retainers. These components are crucial for proper engine function and are often the first to wear out in high-use applications. The new valves are made from a durable material that ensures a tight seal and optimal airflow, while the valve springs provide the necessary force to keep the valves in place.

The kit also includes new piston pins, wrist pins, and clips. These components are essential for connecting the piston to the connecting rod and transferring power from the crankshaft to the piston. The new piston pins and wrist pins are made from a high-strength material that provides superior durability and resistance to wear.

The WiseCo 4pkyFJAGBK Top End Rebuild Kit is a must-have for anyone who wants to keep their Polaris Indy 550 snowmobile running at its best. With high-quality components designed to fit perfectly and provide superior durability and reliability, this kit is an investment in the long-term performance and enjoyment of your snowmobile. Whether you're a weekend warrior or a competitive racer, this top end rebuild kit is an essential tool to keep your engine running strong.

Wiseco 4PKYFJAGBK Top End Rebuild Kit for Polaris Indy 550 (00-03): Pros, Cons, and Conclusion

The Wiseco 4PKYFJAGBK Top End Rebuild Kit is a popular choice among Polaris Indy 550 (00-03) snowmobile owners for upgrading their engines. In this analysis, we will discuss the merits and demerits of this rebuild kit.

1. Enhanced Performance: The Wiseco kit is renowned for delivering improved engine performance. The high-quality pistons and rings contribute to better combustion, increased power, and smoother operation.

2. Durability: The pistons and rings are designed to withstand the rigors of snowmobile use, ensuring long-lasting performance and reducing the need for frequent rebuilds.

3. Easy Installation: The kit comes with comprehensive instructions and all necessary components, simplifying the rebuild process for the average DIY enthusiast.

4. Improved Compatibility: This kit is specifically designed for the Polaris Indy 550 (00-03), ensuring a perfect fit and minimizing the chances of compatibility issues.

5. Quality: Wiseco is a well-known and trusted brand in the powersports industry, ensuring that the rebuild kit is made of high-quality materials and workmanship.

1. Cost: The Wiseco 4PKYFJAGBK Top End Rebuild Kit is pricier than some aftermarket alternatives. However, the enhanced performance and durability may justify the investment for some snowmobile enthusiasts.

2. Limited Lifetime Warranty: Although Wiseco offers a limited lifetime warranty on their pistons, the warranty does not cover other components in the kit. This could be a concern for some buyers looking for comprehensive coverage.

3. Availability: The Wiseco kit may not be readily available at local snowmobile shops or dealerships, requiring buyers to order online.

The Wiseco 4PKYFJAGBK Top End Rebuild Kit is an excellent choice for Polaris Indy 550 (00-03) owners seeking improved performance, durability, and ease of installation. While the upfront cost may be higher than some alternatives, the long-term benefits and the reputation of Wiseco make it a worthwhile investment. Ultimately, the decision to purchase this rebuild kit depends on the individual's priorities, budget, and level of comfort with DIY projects.

If you are a Polaris Indy 550 (00-03) owner looking to upgrade your engine, the Wiseco 4PKYFJAGBK Top End Rebuild Kit is a strong contender. Weigh the pros and cons carefully and consider the long-term benefits before making your purchase. If you value performance, durability, and a simplified rebuild process, this kit is likely a wise investment. However, if budget is a major concern, you may want to explore alternative options.

Details:

Includes wrist pin. Greater strength and lower expansion at high temperatures. WARNING: Wiseco pistons can be fitted only with rings. Wiseco wide range of oversize pistons increase the life cast iron lined cylinders.

Any fitment provided is for US Spec model's. Piston Over Bore Amount: 1mm. All Wiseco High-Performance pistons are priced with rings, wrist pins and cir clips. Material: Forged Aluminum.

With the availability of replacement cylinder sleeves, chrome, nasal and boron composite cylinders can be re sleeved to accept Wiseco oversized. Most Wiseco 2-cycle pistons are forged from high-silicone bar stock. Piston Type: Forged. Wiseco went on to making a plethora of innovative motor sports equipment from clutch covers valve kits, including Top End Rebuild Kit 73mm 1.00OB, that will not have you questioning the quality or care was put in them.

After almost a century in the business, Wiseco has been identified as piston manufacturer, but they didn't stop there. Note: Fits Cast Iron bore. Oem Piston Bore Size: 73mm. Complete piston kits include High-Performance forged pistons, rings, wrist pins, cir clips and top-end gasket kit for one complete engine.

Use our shipping packaging to ship back the item, DO NOT tape label directly original manufacturers box. Item must be in original undamaged unopened packaging.

part #: 4pkyfjagbk prices

• $208.06-$305.04

specifications enginesnowmobile:

• for models: 550, Indy
• for makes: Polaris
• for years: 2000-2003
• brand: Wiseco
• mpn: 4pkyfjagbk
• california prop 65 warning: Warning, And Birth Defects Or Other Reproductive Harm.
• material: Forged Aluminum
• length: 9.000
• compatible model: Indy 550 136in
• displacement: 559cc
• oem piston bore size: 73 Mm
• piston over bore amount: 1 Mm
• package quantity: Each

seller enginesnowmobile:

• rating: 98.9%
• # reviews: 21957
• city: Parkersburg, West Virginia

payments enginesnowmobile:

• credit card: Discover
• other
• wallet: Google-pay

offer enginesnowmobile:

• sold: 0
• quantity: 4
• availability: In Stock
• started: September 29, 2025
• options: Ship-to-home

general enginesnowmobile:

• Snowmobile Parts > Engines Components > Snowmobile Engine Components
• condition: New

returns enginesnowmobile:

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

shipping enginesnowmobile:

• transit: 3-7 Days
• type: Fixed
• class: Standard
• service: Standard
• cost: $0.00

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