2Bros Parts

PISTON KIT 98-01 YFM600 102.00, FORGED WOSSNER 8501D700

$243.38

4.1 Trustpilot 99.9% positive on eBay

Delivery to United States 5–8 business days

Spread the cost with Klarna

1

Wossner 8501D700 forged piston kit for YFM600 Grizzly 1998-2001. This piston kit features a 102mm bore with a 101.93mm actual bore size and a +7.00mm oversize. Wossner forged pistons are superior in strength and design, engineered to provide the best possible path for combustion chamber heat transfer to cylinder walls. The elliptical design provides a more uniform bearing surface under piston heat expansion, eliminating localized pressure and distributing thrust loads more evenly to prevent piston collapse. Made in Germany. Display (cm3) 595, Hub stroke (mm) 84.00, Clearance (mm) 0.07, Wossner compression Ratio: 10.70:1, OEM Compression ratio: 8.50:1, Dome volume (cm3) -0.50, Compression height (mm) 28.00. Lock P/N CW22, Pin P/N WP017, Ring Set P/N 1020XSY. Weight 540g.

Specifications
SKU
56-W4797+700.WO
Brand
Wossner
Availability
In Stock (3)
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
102mm
Variant Id
256113
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Wossner Forged Piston Kit

This Wossner forged piston kit is designed to enhance the performance and durability of your engine. Engineered with precision in Germany, these pistons are a significant upgrade over standard components.

Key Features:

  • Superior Strength and Design: Wossner forged pistons are built to withstand higher stresses and temperatures, offering exceptional longevity.
  • Optimized Heat Transfer: Engineered to efficiently transfer combustion chamber heat to the cylinder walls, promoting stable engine operation.
  • Elliptical Design: The elliptical piston shape ensures a more uniform bearing surface under heat expansion, preventing localized pressure, distributing thrust loads evenly, and avoiding piston collapse.
  • Increased Compression Ratio: Features a compression ratio of 10.70:1, compared to the OEM 8.50:1, for improved power output.
  • Specific Bore Size: This kit includes a 102.00mm piston with a bore of 101.93mm, representing a +7.00mm increase over standard.
  • Performance Components: Includes Lock P/N CW22, Pin P/N WP017, and Ring Set P/N 1020XSY.
  • Engine Displacement: Suitable for engines with a theoretical displacement of 595 cm³.
  • Precision Measurements: Includes crucial specifications like stroke (84.00mm), clearance (0.07mm), dome volume (-0.50 cm³), and compression height (28.00mm).

Manufacturer: Wossner

Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).

Call or email us with your make, model and year and we will check it for you before you order.

Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details

Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy

By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.

Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.

More answers in our FAQ.

Trade pricing available

Buying parts for your business? Apply for a 2BrosParts trade account.

Apply for Trade
1