Piston Kit Harley 3.758 SET/2, Wossner K8594D025-2 Davidson

Description

This Wossner forged piston kit with a 3.758" bore is an oversized (+0.25mm / +0.010") replacement for Harley-Davidson 1453cc Twin Cam engines from 1999 to 2009, including Twin Cam 88 (88 cu. in.) models from 1999 to 2006. Forged in Germany for high durability and performance, the pistons feature a flat top design with an 8.5:1 compression ratio. The kit includes two skirt-coated forged pistons, rings, clips, and pins.

Features

  • Forged construction for exceptional strength and longevity

  • Skirt-coated to reduce friction and wear

  • Engineered for efficient combustion chamber heat dissipation

  • Elliptical profile ensures even bearing surface during thermal expansion

  • Flat top piston with 8.5:1 compression ratio

  • Manufactured in Germany

Specifications

  • Bore: 3.758" (+0.25mm / +0.010" Oversize)

  • Compression ratio: 8.5:1 (flat top)

  • Includes: 2 forged pistons, rings, clips, and pins

  • Ring Set Part Number: 955XSY

Cross-Reference OEM Part Numbers

  • 56-W9865.025.WO

  • K8594D025-2

Vehicle Fitments

  • Harley-Davidson 1453cc Twin Cam (1999–2009)

  • Harley-Davidson Twin Cam 88 (1999–2006)

Piston Kit Harley 3.758 SET/2, Wossner K8594D025-2 Davidson

Product form

This Wossner forged piston kit with a 3.758" bore is an oversized (+0.25mm / +0.010") replacement for Harley-Davidson 1453cc Twin... Read more

Out of stock

£0.00 Incl. VAT

    • Guaranteed secure & safe checkout.

      shop pay

    SKU: 56-W9865.025.WO

    • Free shipping on all orders above £75
    • No hassle returns within 30 days

    Description

    This Wossner forged piston kit with a 3.758" bore is an oversized (+0.25mm / +0.010") replacement for Harley-Davidson 1453cc Twin Cam engines from 1999 to 2009, including Twin Cam 88 (88 cu. in.) models from 1999 to 2006. Forged in Germany for high durability and performance, the pistons feature a flat top design with an 8.5:1 compression ratio. The kit includes two skirt-coated forged pistons, rings, clips, and pins.

    Features

    • Forged construction for exceptional strength and longevity

    • Skirt-coated to reduce friction and wear

    • Engineered for efficient combustion chamber heat dissipation

    • Elliptical profile ensures even bearing surface during thermal expansion

    • Flat top piston with 8.5:1 compression ratio

    • Manufactured in Germany

    Specifications

    • Bore: 3.758" (+0.25mm / +0.010" Oversize)

    • Compression ratio: 8.5:1 (flat top)

    • Includes: 2 forged pistons, rings, clips, and pins

    • Ring Set Part Number: 955XSY

    Cross-Reference OEM Part Numbers

    • 56-W9865.025.WO

    • K8594D025-2

    Vehicle Fitments

    • Harley-Davidson 1453cc Twin Cam (1999–2009)

    • Harley-Davidson Twin Cam 88 (1999–2006)

    Shipping & Delivery

    How long will my item take to arrive?

    Orders are typically dispatched within 1 working day and are shipped on a 24hour (non-guaranteed) service.

    Where do you ship to?

    We currently only ship orders within the UK.

    How can I track my order?

    Once your order has been dispatched, you will receive a tracking code. Tracking information is emailed to the email address that was provided when placing the order.

    Can I collect my order?

    Unfortunately we do not offer order collections from our fulfilment centre.

    WHY NOT CHECK OUT

    Recently viewed products

      Sign up for our newsletter

      Subscribe to our Mailing List

      Never miss any news and be the first to know about sale and offers

      © 2026 Radhouse, Powered by Shopify

        • American Express
        • Apple Pay
        • Diners Club
        • Discover
        • Google Pay
        • Maestro
        • Mastercard
        • PayPal
        • Shop Pay
        • Union Pay
        • Visa