Wiseco 86-91 Kawasaki JS300 ProLite (549M07650) Piston Kit

SKU: WISWK1027

Powersports Piston and Ring Kits

WIS Piston Sets - Powersports...

Wiseco

Wiseco 86-91 Kawasaki JS300 ProLite (549M07650) Piston Kit

SKU: WISWK1027

Powersports Piston and Ring Kits

WIS Piston Sets - Powersports...

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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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.

Part Type

Engine Piston Set

Data: v4.2 - Upd: 2026-09-30 17:36:47

Features

76.50 mm Bore
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

Specifications

Product Attributes - Brand: Wiseco
Product Attributes - Manufacturer's Part Number: WK1027
Product Attributes - Part Type: Powersports Piston and Ring Kits
Product Attributes - Product Line: Wiseco Powersports Pro-Lite Piston Kits
Product Attributes - UPC: 00193564156822
Product Attributes - Piston Material: Forged aluminum
Product Attributes - Bore (mm): 76.500mm
Product Attributes - Stroke: 64.90mm
Product Attributes - Wrist Pin Style: Floating
Product Attributes - Wrist Pin Retainers Included: Yes
Product Attributes - Top Ring Material: Steel
Product Attributes - Top Ring Facing Material: Chrome
Product Attributes - Second Ring Material: Steel
Product Attributes - Second Ring Facing Material: Chrome
Product Attributes - File Fit: No
Product Attributes - Gapless: No
Product Attributes - Gaskets Included: Yes
Product Attributes - Quantity: Sold as a kit.

Reference Information

Brand Name/s	Wiseco
StreetFX SKU	wisWK1027
SFX Item ID	4066063
Supplier Item Code	4066063
Manufacturer SKU	WK1027
Manufacturer UPC	193564156822
Alternative References	JS300, (549M07650)