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Wiseco 90-93 Polaris 350 Trail Boss 3189TD Piston

SKU: WIS639M08100

Powersports Piston and Ring Kits

WIS Powersports Single Pistons...

Wiseco 90-93 Polaris 350 Trail Boss 3189TD Piston

SKU: WIS639M08100

Powersports Piston and Ring Kits

WIS Powersports Single Pistons...

A$183.65
IN STOCK! Est Ship 3-5 Days days. In stock at 1 location (only 1 available)

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Description

Exclusive Wiseco flash sale discount at StreetFX!

Talk about timing! This is a limited offer while stocks last on various Wiseco part numbers. There's never been a better time to buy your Wiseco upgrades, so what are you waiting for?!

This item is currently on sale!

Same-day payment required to secure promotional price. Promotions may end early or be extended based on stock levels or other factors.

Wiseco 90-93 Polaris 350 Trail Boss 3189TD Piston

Wiseco's legacy is rooted in 2-stroke piston manufacturing and performance, dating over 80 years ago back to 1941. Today, Wiseco 2-stroke pistons are the result of decades of experience, incorporating the latest in 2-stroke piston manufacturing and design to deliver the performance Wiseco built its name on.

Additional Information

81.00 mm Bore

Part Type

Engine Piston

Product Overview

Wiseco 90-93 Polaris 350 Trailboss 3189TD Piston


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 09:44:53

Data: v4.2 - Upd: 2026-11-09 15:11:46

Features

  • Dedicated forgings and additional lightening operations allow for optimized strength-to-weight ratio
  • Designed and built for each specific 2-stroke powersports engine
  • Engineered, forged, and machined in the USA in Mentor, OH
  • Improved tensile strength of forged material optimizes strength and service life
  • Includes high-quality piston ring(s), wrist pin(s), and circlips

Note for Pistons, Rings, Rotors, Rods and engine internals

Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.

(keyword: piston)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Description:Wiseco 90-93 Polaris 350 Trailboss 3189TD Piston
Part Number:wis639M08100

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Wiseco, WISECO-PRO TRU
StreetFX SKU wis639M08100
SFX Item ID 4064704
Accounting SKU wis-639M08100
Manufacturer SKU 639M08100
Manufacturer UPC 193564123800
Alternative References 639M08100, WIS-639M08100

Piston and Ring Kit, Forged Aluminum, 81.000mm Bore, Polaris, Kit

Wiseco powersports piston kits include your rings, piston pin, and circlips. Wiseco has a decade of experience producing quality pistons for dirt bikes, ATVs, snowmobiles, outboard marine engines, and motorcycles. Their piston kits provide strong, lightweight pistons with optimized designs that improve engine efficiency and maximize your torque and throttle response. Plus, Wiseco powersports piston kits are produced right here in the USA. It's time to blaze your own trail with Wiseco powersports piston kits.

Product Attributes
BrandWiseco
Manufacturer's Part Number639M08100
Part TypePowersports Piston and Ring Kits
Product LineWiseco Powersports Piston Kits
UPC00193564123800
Piston MaterialForged aluminum
Bore (mm)81.000mm
Stroke70.00mm
Wrist Pin StyleFloating
Wrist Pin Retainers IncludedYes
Top Ring MaterialSteel
Top Ring Facing MaterialGas nitrided
Second Ring MaterialCast iron
Second Ring Facing MaterialCast iron
File FitNo
GaplessNo
Gaskets IncludedNo
QuantitySold as a kit.

Manufacturer Attributes
Piston Oversize 1.00
Product Series 2 Stroke Forged Series
Piston Material 4032
Piston Diameter 80.92
Bore Diameter 81.00
Product Market ATV/UTV
Engine Type ICE
Skirt Coating No
Product Type Piston Kits
Title - Web Polaris Trail Boss 350L 2x4 Wiseco Piston Kit - 81.00 mm Bore
Industry Powersports
Included Components Ring Set #3189TD, Wrist Pin #S278, CirClip #CW18
Title Wiseco 2 Stroke Forged Series Piston Kit, 81.00 MM Bore
Out of Stock Message Estimated Shipped Date 3-4 Weeks
Category Hierarchy Powersports>Pistons>Piston Kits>ATV/UTV Piston Kits
Manufacturer Designation Polaris 350 '90-93 Trailboss 3189TD
Product Class Engine Piston
Construction/Type Wiseco 2 Stroke Forged Series Piston Kit, 81.00 mm Bore
Product Outline <ul><li>Engineered, forged, and machined in the USA in Mentor, OH</li><li>Designed and built for each specific 2-stroke powersports engine</li><li>Improved tensile strength of forged material optimizes strength and service life</li><li>Dedicated forgings and additional lightening operations allow for optimized strength-to-weight ratio</li><li>Includes high-quality piston ring(s), wrist pin(s), and circlips</li></ul>
Vehicle Brief Polaris 350 '90-93 Trailboss 3189TD
Market Description Wiseco's legacy is rooted in 2-stroke piston manufacturing and performance, dating over 80 years ago back to 1941. Today, Wiseco 2-stroke pistons are the result of decades of experience, incorporating the latest in 2-stroke piston manufacturing and design to deliver the performance Wiseco built its name on.

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