Skip to content
Free Shipping on orders over $69.99 to the continental 48 (Alaska & Hawaii orders, call 402-214-0706 to order).
All products have accurate in stock quantities listed, if it shows in stock it’s actually in stock!
Free Shipping on orders over $69.99 to the continental 48 (Alaska & Hawaii orders, call 402-214-0706 to order).
All products have accurate in stock quantities listed, if it shows in stock it’s actually in stock!
Wiseco

Wiseco Forged Series Piston Kit - 394M08650 Yamaha Dirt Bikes 1977-1978

MPN: 394M08650
Wiseco

Wiseco Forged Series Piston Kit - 394M08650 Yamaha Dirt Bikes 1977-1978

MPN: 394M08650
Availability:
Only 5 left!
Forged from high-silicon alloy for maximum strength and dependability Wiseco offers a complete range of popular piston models and years for both trail and racing applications Kit includes piston, rings, circlips and wrist pin Specs Displacement 397 cc Bore Size 86.50 mm Bore - Oversize +1,50 mm Bore - Oversize +1.50 mm Riding Style Off-Road Units Kit Piston Material 4032 Aluminum Alloy Engine Type 2-Stroke Piston Diameter 86.42 mm Stroke Length 70.00 mm Model Forged Series Product Name Piston Kit Skirt Coating Non-Coated Part Notes Kit Includes: • 1x Piston • 1x Ring Set #3405TD • 1x Wrist Pin #S277 • 1x Circlip Set #CW18
Original price $224.95 - Original price $224.95
Original price
$224.95
$224.95 - $224.95
Current price $224.95

Product Details

Features

  • Forged from high-silicon alloy for maximum strength and dependability
  • Wiseco offers a complete range of popular piston models and years for both trail and racing applications
  • Kit includes piston, rings, circlips and wrist pin

Specs

Displacement 397 cc
Bore Size 86.50 mm
Bore - Oversize +1,50 mm
Bore - Oversize +1.50 mm
Riding Style Off-Road
Units Kit
Piston Material 4032 Aluminum Alloy
Engine Type 2-Stroke
Piston Diameter 86.42 mm
Stroke Length 70.00 mm
Model Forged Series
Product Name Piston Kit
Skirt Coating Non-Coated

Part Notes

  • Kit Includes:
  • • 1x Piston
  • • 1x Ring Set #3405TD
  • • 1x Wrist Pin #S277
  • • 1x Circlip Set #CW18

Product Description

Features

  • Forged from high-silicon alloy for maximum strength and dependability
  • Wiseco offers a complete range of popular piston models and years for both trail and racing applications
  • Kit includes piston, rings, circlips and wrist pin

Specs

Displacement 397 cc
Bore Size 86.50 mm
Bore - Oversize +1,50 mm
Bore - Oversize +1.50 mm
Riding Style Off-Road
Units Kit
Piston Material 4032 Aluminum Alloy
Engine Type 2-Stroke
Piston Diameter 86.42 mm
Stroke Length 70.00 mm
Model Forged Series
Product Name Piston Kit
Skirt Coating Non-Coated

Part Notes

  • Kit Includes:
  • • 1x Piston
  • • 1x Ring Set #3405TD
  • • 1x Wrist Pin #S277
  • • 1x Circlip Set #CW18

Part Numbers
Store SKU MFR. Product # Availability
394M08650 394M08650 In Stock
Fitment
This product is vehicle specific. Select your vehicle to confirm fitment.

This Product Fits

Fitment Disclosure

This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.

Features

  • Forged from high-silicon alloy for maximum strength and dependability
  • Wiseco offers a complete range of popular piston models and years for both trail and racing applications
  • Kit includes piston, rings, circlips and wrist pin

Specs

Displacement 397 cc
Bore Size 86.50 mm
Bore - Oversize +1,50 mm
Bore - Oversize +1.50 mm
Riding Style Off-Road
Units Kit
Piston Material 4032 Aluminum Alloy
Engine Type 2-Stroke
Piston Diameter 86.42 mm
Stroke Length 70.00 mm
Model Forged Series
Product Name Piston Kit
Skirt Coating Non-Coated

Part Notes

  • Kit Includes:
  • • 1x Piston
  • • 1x Ring Set #3405TD
  • • 1x Wrist Pin #S277
  • • 1x Circlip Set #CW18