PISTON KIT KTM505SX-F HC 100, WOSSNER 8725DB 08-09
4.1 Trustpilot 99.9% positive on eBay
Delivery to United States 5–8 business days
Spread the cost with 
Wossner forged piston kit with a 100.01mm bore (99.96mm) for KTM SX-F 505. High-compression forged piston for increased performance. Optimized heat transfer for enhanced durability. Elliptical design ensures uniform bearing surface under heat expansion. Even thrust load distribution to prevent piston collapse. Manufactured in Germany. Specifications: Bore Size: 100.01mm (99.96mm), Compression Ratio: 13.5:1, Part Number: 8725DB, Lock Part Number: CW20, Pin Part Number: WP038, Ring Set Part Number: 1000ADS-2, Displacement: 449 cm³, Stroke: 60.80mm, Clearance: 0.05mm, OEM Compression Ratio: 12.5:1, Dome Volume: +0.30 cm³, Compression Height: 21.80mm.
- SKU
- 56-W315+00B.WO
- Brand
- Wossner
- Availability
- In Stock (1)
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 100mm
- Variant Id
- 255412
FULL DESCRIPTION
Wossner Forged Piston Kit - High Compression
Upgrade your engine's performance with this high-compression Wossner forged piston kit. Engineered for superior strength and exceptional heat transfer efficiency, this piston is designed to optimize combustion performance and enhance durability. The advanced elliptical design ensures even distribution of thrust loads, effectively reducing localized pressure and preventing potential piston collapse under extreme conditions. Each piston is meticulously manufactured in Germany to the highest standards.
Key Features:
- High-compression forged piston for increased power output.
- Optimized heat transfer for improved longevity and reliability.
- Elliptical piston design provides a uniform bearing surface, adapting to thermal expansion.
- Even thrust load distribution minimizes stress and prevents piston collapse.
- Precision manufactured in Germany.
Specifications:
- Bore Size: 100.01mm (99.96mm)
- Compression Ratio: 13.5:1
- Piston Part Number: 8725DB
- Lock Part Number: CW20
- Pin Part Number: WP038
- Ring Set Part Number: 1000ADS-2
- Displacement: 449 cm³
- Stroke: 60.80mm
- Clearance: 0.05mm
- OEM Compression Ratio: 12.5:1
- Dome Volume: +0.30 cm³
- Compression Height: 21.80mm
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.