PISTON KIT 06-12 SX-F 250 KTM, FORGED WOSSNER 8645DA 77130007100
4.1 Trustpilot 99.9% positive on eBay
Delivery to United States 5–8 business days
Spread the cost with
Wossner forged piston kit designed for high-performance applications, providing superior strength and optimized heat transfer. The elliptical design ensures uniform bearing surface under heat expansion, reducing localized pressure and preventing piston collapse. Manufactured in Germany for durability and precision. Features include a forged piston for enhanced strength and durability, optimized heat transfer to cylinder walls for improved performance, and an elliptical design for uniform bearing surface and even thrust load distribution. Manufactured in Germany. Specifications: Bore Size 76mm, Actual Bore 75.96mm, Display (cm³) 527, Stroke (mm) 54.80, Clearance (mm) 0.04, Wossner Compression Ratio 12.90:1, OEM Compression Ratio 12.80:1, Dome Volume (cm³) 1.20, Compression Height (mm) 19.50, Theoretical Weight N/A, Lock Part Number CW16, Pin Part Number WP070, Ring Set Part Number 760XAS. Part Number 56-W4730+00A.WO. Cross-Reference OEM Part Numbers: 77130007100, 4981M07600.
- SKU
- 56-W4730+00A.WO
- Brand
- Wossner
- Availability
- In Stock (1)
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- Variant Id
- 255958
FULL DESCRIPTION
Wossner Forged Piston Kit for High Performance
Upgrade your motorcycle's engine with the Wossner forged piston kit, engineered for superior strength and optimal performance. This high-quality piston is designed to withstand demanding conditions, providing enhanced durability and efficiency for your ride.
Key Features:
- Forged Piston Construction: Offers superior strength and longevity compared to cast pistons.
- Optimized Heat Transfer: Designed for efficient heat transfer to cylinder walls, contributing to better engine performance and cooling.
- Elliptical Design: Ensures a uniform bearing surface even under heat expansion. This reduces localized pressure and prevents piston collapse, maintaining consistent performance.
- Precision Manufacturing: Made in Germany to exacting standards, guaranteeing high quality and reliability.
Specifications:
- Bore Size: 76mm
- Actual Bore: 75.96mm
- Stroke: 54.80mm
- Clearance: 0.04mm
- Wossner Compression Ratio: 12.90:1
- Dome Volume: 1.20cm³
- Compression Height: 19.50mm
- Lock Part Number: CW16
- Pin Part Number: WP070
- Ring Set Part Number: 760XAS
Cross-Reference OEM Part Numbers:
- 77130007100
- 4981M07600
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.


