fits model: Touring, Indy, Trail. make: Polaris. year: 1998–1999.

( Brand: Spi ), ( Manufacturer Part Number: 9899PIDTRT488TERK72P ), ( Part Type: Bearing Gasket Piston ), ( Piston Type: Cast, Dual Ring ), ( Piston Size: Standard Bore 72mm ), ( Vehicle Type: Snowmobile ), ( Piston Surface Finish: Has Teflon Skirt Coating ), ( Modified Item: No ), ( Country/region Of Manufacture: Taiwan ), ( Custom Bundle: Yes ), ( Bundle Description: Includes, 1 Top End Gasket Kit, 2 Wrist Pin Bearings ), ( Compatible Model: Indy Trail Touring )
Introducing a top-tier performance upgrade for your 1998 and 1999 Polaris Indy Trail Touring 488 Outside Snowmobile, the SPI (Ski-Doobcalc Indy) Pistons, Bearings, Top Gasket, and End Set. Designed for ultimate durability and efficiency, this performance package is the perfect choice for avid snowmobilers who crave increased power and longevity from their cross-country sled.
The heart of the upgraded system lies in the new SPI pistons. Engineered with state-of-the-art materials and CNC machining techniques, these pistons offer superior strength and lighter weight, resulting in better engine response and improved thrust. The reciprocating weight of the upgraded pistons has also been engineered to reduce inertia, enhancing responsiveness and reducing stress on the engine.
The set includes a high-tech top gasket, engineered to seal the combustion chamber more effectively, ensuring optimal transfer of combustion gases while eliminating harmful leakage. This results in improved engine performance, increased efficiency, and reduced exhaust emissions.
A set of robust bearings rounds out the performance upgrades. Comprised of premium bearing materials and tailored dimensions, these bearings minimize friction and wear. The upgraded bearings provide better support for the connecting rods, allowing for a smoother, quieter, and more efficient engine operation.
The 1998-1999 Polaris Indy Trail Touring 488 SPI Pistons, Bearings, Top Gasket, and End Set represent the pinnacle in snowmobile performance and engine durability. Suitable for motorsport applications, this upgrade provides substantial benefits including increased power, improved fuel efficiency, quieter operation, and extended engine life.
For seasoned trail riders and competitive racers alike, this upgrade ensures that your sled remains competitive on the slopes while pleasing even the most demanding enthusiasts. It's time to elevate your snowmobile experience and take your cross-country sled to the next level; upgrade to the 1998-1999 Polaris Indy Trail Touring 488 SPI Pistons, Bearings, Top Gasket, and End Set today.
a. Improved Engine Performance: Replacing the old pistons, bearings, and top gasket can significantly enhance the engine's power output, providing a smoother and more efficient operation.
b. Better Compatibility: New parts ensure a perfect fit and an excellent seal, reducing the chances of oil leaks and preventing potential engine damages.
c. Durability: Original equipment manufacturer (OEM) parts are designed to be durable and engineered to meet strict quality standards. They offer better reliability compared to aftermarket alternatives.
d. Better Resale Value: Installing new, maintained parts in your vehicle can lead to better resale value when you decide to sell the snowmobile.
2. Cons:a. Cost: OEM parts for older Polaris models can be expensive due to their rarity and the specialized nature of the components. Be prepared for a significant investment.
b. Availability: Finding the exact part number and locating the parts in your area or through the manufacturer can be time-consuming.
c. Installation: Piston and bearing replacement can be a complex and lengthy process, requiring specialized tools and a significant amount of time.
Recommendation:Considering the pros and cons, it's an investment worth making for those seeking an improved engine performance,lower risk for engine damages, and better resale value. Those concerned about cost and installation complexities might opt for custom rebuild kits or aftermarket alternatives. However, for those who prioritize genuine parts and factory performance, the OEM solution would be recommended. Ultimately, the decision comes down to your budget, personal preferences, and priorities.
Mos2 teflon molybdenum coated skirts perform at the highest standards, reducing friction and heat for added power longevity. Made from hyper eutectic alloy for extra strength and reduced expansion. Anodized piston dome for increased protection against excessive heat. High-quality cast piston made with excellent materials to precise specifications includes 2 Spi pistons, rings, wrist pins, cir clips, pin needle bearings, and a top end gasket kit.
Pistons are for the standard bore 72mm.
Brand new top end engine rebuild kit.