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Wiseco HD Twin Cam 88 Big Bore 3875VMF (AP) Piston Kit

SKU: WIS4994PS

Powersports Piston and Ring Kits

WIS Piston Sets - Powersports...

Wiseco HD Twin Cam 88 Big Bore 3875VMF (AP) Piston Kit

SKU: WIS4994PS

Powersports Piston and Ring Kits

WIS Piston Sets - Powersports...

A$445.91
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

V-Twin performance has been around since some of the earliest days of motorcycle racing and engine modification, and Wiseco has been there since the beginning. Applying over 80 years of experience, Wiseco has fine-tuned its V-Twin pistons for each specific engine platform to optimize performance and durability. From reliable rebuilds to all-out race, Wiseco has the pistons for your V-Twin build.

Part Type

Engine Piston

Data: v4.2 - Upd: 2026-10-13 16:55:43

Features

  • 3.875 in. Bore, 9:1 CR
  • Complete Package: Each piston includes a wrist pin, rings, and circlips, providing everything needed for installation
  • Designed and built specifically for each V-Twin engine platform
  • Engineered, forged, and machined in the USA in Mentor, OH
  • Forged Material: Optimizes strength and service life, ensuring durability under high-stress conditions
  • Improved tensile strength of forged material optimizes strength and service life
  • Optimized compression ratio to fit your build and performance goals
  • Performance-Enhancing Features: Varied across applications to maximize both durability and power
  • Wrist pin, rings and circlips included

Specifications

Product Attributes - Brand
Wiseco
Product Attributes - Manufacturer's Part Number
4994PS
Product Attributes - Part Type
Powersports Piston and Ring Kits
Product Attributes - Product Line
Wiseco Powersports Piston Kits
Product Attributes - UPC
00193564128089
Product Attributes - Piston Material
Forged aluminum
Product Attributes - Bore (in.)
3.875 in.
Product Attributes - Stroke
4.000 in.
Product Attributes - Rod Length
7.667 in.
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
Gas nitrided
Product Attributes - Second Ring Material
Cast iron
Product Attributes - Second Ring Facing Material
Phosphate coated
Product Attributes - Oil Ring Material
Stainless steel
Product Attributes - Oil Ring Facing Material
Chrome
Product Attributes - File Fit
No
Product Attributes - Gapless
No
Product Attributes - Gaskets Included
No
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
Features a flat-top piston.

Reference Information

Brand Name/s Wiseco
StreetFX SKU wis4994PS
SFX Item ID 4068416
Supplier Item Code 4068416
Manufacturer SKU 4994PS
Manufacturer UPC 193564128089
Alternative References 3875VMF

Compatibility

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