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Wiseco PK1777 ATV Top End Piston Kit 83mm 8.6:1 Yamaha Kodiak Big Bear 400

(1993-1999 Yamaha YFM400F Kodiak 4x4; 2000-2004 Yamaha YFM400 Big Bear 2x4; 2000-2006 Yamaha YFM400 Big Bear 4x4; 2007-2012 Yamaha YFM400 Big Bear IRS 4x4)

Part of: Wiseco Pistons Top End Piston Kit Honda

Other options in this family: Wiseco Pistons PK1659 Wiseco Pistons PK1092 Wiseco Pistons PK1099 Wiseco Pistons PK1401 Wiseco Pistons K1076

Manufacturer

Picture for manufacturer Wiseco Pistons

Part Number

PK1777
11 reviews
Sale Price

$252.99

Estimated ship date Saturday, November 21

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Product Details

The Wiseco PK1777 is a complete top end piston kit engineered for the Yamaha YFM400 Kodiak and Big Bear 400 ATV. Designed as a stock-bore replacement at 83.00mm, this kit delivers everything needed for a reliable and high-performance top end rebuild in a single package.

Wiseco's forged pistons are manufactured from aerospace-grade aluminum using an exclusive in-house forging process that compresses the material's grain structure for superior strength, impact resistance, and fatigue durability compared to cast alternatives. The 4-stroke race-ready dome design features smooth edges for optimized combustion flow, while the Armor Glide skirt coating reduces friction and noise for improved power output and longer engine life.

Kit Specifications:

  • Bore Size: 83.00mm (Standard / Stock)
  • Compression Ratio: 8.6:1
  • Stroke: 71.50mm
  • Displacement: 387cc
  • Piston Material: Forged Aluminum
  • Piston Ring Part Number: 3268XC
  • Wrist Pin Part Number: S376
  • Circlip Part Number: CW19

Kit Includes:

  • High-performance forged piston
  • Piston rings
  • Wrist pin
  • Circlips
  • Complete top end gasket set

Important: Wiseco pistons must be used exclusively with Wiseco rings. Ring types are not interchangeable between different Wiseco ring series. Cylinder preparation requires deglaze only for standard bore installations.

Products specifications

Fits

1993-1999 Yamaha YFM400F Kodiak 4x4; 2000-2004 Yamaha YFM400 Big Bear 2x4; 2000-2006 Yamaha YFM400 Big Bear 4x4; 2007-2012 Yamaha YFM400 Big Bear IRS 4x4

easy,great price, sofarsogood

I had never heard of Autoplicity until I started shopping for an exhaust. I didn't think I was going to find the one I wanted at a decent price. Not only did they have my exhaust at a screaming deal, they had it to my door in perfect shape in 6 days including the evening of purchase and a weekend. I'll definitely look at buying from them again.

fast easy and best price!

The best deals and customer service on the net

Quick and easy.. Thanks

Great price and they were in stock

I put my order at 7/29 and received nothing after the order. I emailed to ask my order status at 7/31 and at 8/1 I received my order. Pretty fast shipping. I am satisfied with the shipping and hope later tonight the product will work fine for my car!

Ordered on a Friday and they had it shipped by Monday and will be at my door step by Wednesday. Prices are amazing I will have to buy from them again.

Great price, wicked fast shipping. Will order from these guys again!

Quick

Item was very good quality and arrived in 4 days great service.

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