Street. Track. Everything between.
07 3276 7829
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

Wiseco 90-93 Polaris 350 Trail Boss (639M08150) Piston

SKU: WISPK1650

Powersports Piston and Ring Kits

WIS Powersports Single Pistons...

Wiseco 90-93 Polaris 350 Trail Boss (639M08150) Piston

SKU: WISPK1650

Powersports Piston and Ring Kits

WIS Powersports Single Pistons...

A$241.16
IN STOCK! Est Ship 3-5 Days days. In stock at 1 location (only 1 available)

Added to cart

We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

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 (639M08150) 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

Wiseco 2 Stroke Forged Series Piston Kit, 81.50 mm Bore

Part Type

Engine Piston Set

Product Overview

Wiseco PISTON KT W/GASKET STD +1.5


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 09:44:48

Data: v4.2 - Upd: 2026-11-09 11:27:38

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 PISTON KT W/GASKET STD +1.5
Part Number:wisPK1650

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Wiseco, WISECO-PRO TRU
StreetFX SKU wisPK1650
SFX Item ID 4064629
Accounting SKU wis-PK1650
Manufacturer SKU PK1650
Manufacturer UPC 193564147783
Alternative References PK1650, WIS-PK1650

Piston and Ring Kit, Forged Aluminum, 81.500mm 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 NumberPK1650
Part TypePowersports Piston and Ring Kits
Product LineWiseco Powersports Piston Kits
UPC00193564147783
Piston MaterialForged aluminum
Bore (mm)81.500mm
Wrist Pin StyleFloating
Wrist Pin Retainers IncludedYes
Top Ring MaterialSteel
Top Ring Facing MaterialChrome
Second Ring MaterialSteel
Second Ring Facing MaterialChrome
File FitNo
GaplessNo
Gaskets IncludedYes
QuantitySold as a kit.

Manufacturer Attributes
Piston Oversize 1.50
Product Series 2 Stroke Forged Series
Piston Diameter 81.42
Bore Diameter 81.50
Product Market ATV/UTV
Engine Type ICE
Skirt Coating No
Included Components Piston #639M08150, Ring Set #3209TD, Wrist Pin #S278, CirClip #CW18, Bearing #B1002, Gasket #W5423
Industry Powersports
Category Hierarchy Powersports>Pistons>2-Stroke Pistons
Product Type Top End Kits
Title Wiseco 2 Stroke Forged Series Piston Kit, 81.50 MM Bore
Title - Web Polaris Trail Boss 350L 2x4/4x4 Wiseco Top End Kit - 81.50 mm Bore
Out of Stock Message Estimated Shipped Date 3-4 Weeks
Manufacturer Designation Polaris 350 '90-93 Trailboss (639M08150)
Product Class Engine Piston Set
Construction/Type Wiseco 2 Stroke Forged Series Piston Kit, 81.50 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 (639M08150)
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.

Compatibility

Loading compatibility information...

Keep shopping

More from Wiseco