KIMPEX 7637-K325115-77 Piston Kit Big 369CC BORE-.020 2.461

( Brand: Kimpex ), ( Manufacturer Part Number: 7637-K325115-77 ), ( Part Type: Piston )

Review KIMPEX Piston Kit 369cc Big Inch Oversize To 2.461 fits 2005–2006

Introducing the Kimpex 7637-K325115-77 piston kit, specifically designed for 2005 and 2006 369cc big bore snowmobiles with a bore size of 2.461 inches and an overbore of 0.020 inches. This piston kit contains all the necessary components to ensure optimal engine performance for your snowmobile.

The piston kit includes two new pistons, made from high-quality forged aluminum, ensuring superior strength and durability. These pistons feature a precision-machined crown and skirt for an exact fit and minimal clearance with the cylinder wall. The piston rings are also included in the kit, made from a high-temperature, low-friction material to minimize wear and improve sealing.

The piston kit also includes two new piston pins, made from chrome-molybdenum steel for maximum strength and durability. These pins are precisely machined to ensure a perfect fit in the piston and connecting rod. The kit also includes new piston pin bushings, which are made from a high-performance, self-lubricating material to provide long-lasting performance and reduce friction.

The piston kit is designed to provide improved power and performance for your 2005 and 2006 369cc big bore snowmobile engine. The pistons are machined to provide a larger bore size, which increases the volume of the combustion chamber and allows for more fuel to be burned, resulting in more power.

The piston kit is easy to install, with clear instructions included in the packaging. It is important to note that installing this kit requires a certain level of mechanical expertise and experience with snowmobile engines. If you are not confident in your abilities, it is recommended to have the kit installed by a professional technician.

In conclusion, the Kimpex 7637-K325115-77 piston kit is a high-quality, performance-enhancing upgrade for 2005 and 2006 369cc big bore snowmobiles. With its precision-machined components, high-quality materials, and easy installation, this piston kit is an excellent investment for any snowmobile enthusiast looking to get the most out of their machine.

Piston Kit Upgrade for 2005-2006 Honda TRX450R: A Deep Dive into the Kimpex 7637-K325115-77 Big Bore Kit

The Kimpex 7637-K325115-77 piston kit is a popular aftermarket upgrade for the Honda TRX450R ATVs from 2005 to 2006. Big bore kits, like this one, offer increased engine displacement and power, making them a desirable modification for off-road enthusiasts. In this analysis, we will discuss the key features, potential benefits, and potential drawbacks of this piston kit upgrade.

1. Increased displacement: The Kimpex piston kit upgrades the engine from its stock 358cc to 369cc, providing a slight power boost.

2. High-quality materials: The piston kit includes forged pistons and rings, ensuring durability and reliability.

3. Designed for 2005-2006 Honda TRX450R: This kit is specifically designed for these model years, ensuring a proper fit.

1. Increased power: The additional displacement can lead to a noticeable increase in power, making the ATV more responsive and agile.

2. Improved performance: The upgraded pistons and rings can result in smoother engine operation, reduced engine wear, and better fuel efficiency.

3. Enhanced customization: The piston kit upgrade is one of several modifications that can be made to the TRX450R, allowing riders to personalize their ATVs.

1. Cost: The Kimpex piston kit is more expensive than the stock pistons and rings, making it a significant investment.

2. Installation complexity: Installing the piston kit requires specialized tools and knowledge, potentially increasing the overall cost and time investment.

3. Potential engine modifications: Installing the piston kit may require additional engine modifications, such as a new camshaft or carburetor tuning, to maximize the benefits.

The Kimpex 7637-K325115-77 piston kit upgrade offers several potential benefits, including increased power, improved performance, and enhanced customization for 2005-2006 Honda TRX450R ATVs. However, it also comes with significant costs and installation complexity. Before making the decision to purchase this kit, riders should carefully consider their budget, installation capabilities, and desired performance improvements.

If you are an avid off-road rider looking to extract the maximum performance from your 2005-2006 Honda TRX450R, the Kimpex piston kit upgrade is a worthwhile investment. However, be prepared for the additional costs and installation complexity. If you are new to ATV modifications or have limited budget, it may be worth exploring other, less expensive upgrades first.

Details:

For 2005 2006 Ski-Door GSX 380 Fan Snowmobile: Bore: 2.461in. I need to exchange an item. Oversize to 2.461in. Kimpex Piston Kit 369cc Big Bore-.020in.

Brand: Kimpex, model Number: 7637-K325115-77. This is helpful if you are buying multiple items. Parts without fitment are to be assumed universal and may require vehicle modification. Engineered for the best possible heat transfer from combustion chamber to cylinder walls.

part #: 7637k32511577 prices

• $60.09-$68.83

specifications enginesnowmobile:

• for years: 2005-2006
• brand: Kimpex
• mpn: 7637-k325115-77
• part type: Piston

payments enginesnowmobile:

• wallet: Paypal
• other
• credit card: Mastercard

offer enginesnowmobile:

• availability: In Stock
• sold: 0
• quantity: 4
• started: February 2, 2026
• options: Ship-to-home

shipping enginesnowmobile:

• type: Fixed
• cost: $0.00
• service: Standard
• transit: 2-5 Days
• class: Standard

seller enginesnowmobile:

• # reviews: 76746
• rating: 99.8%
• city: Sparks, NV

general enginesnowmobile:

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

returns enginesnowmobile:

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

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