PISTON KIT 73-78 CR125 57.50, FORGED WOSSNER 8151D150
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 57.50mm bore and an oversized forged piston (+1.50mm) for increased durability. This piston enhances combustion chamber heat transfer and features an elliptical design to ensure even load distribution, reducing localized pressure and preventing collapse. Manufactured in Germany for high performance and reliability. Specifications include a standard bore of 57.44mm, displacement of 123 cm³, stroke of 64.40mm, clearance of 0.06mm, compression ratio of 2-Stroke, and compression height of 32.00mm. Piston part number is 8151D150.
- SKU
- 56-W339+1.50.WO
- Brand
- Wossner
- Availability
- In Stock (2)
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 57.5mm
- Variant Id
- 255452
FULL DESCRIPTION
Wossner Forged Piston Kit 57.50mm Bore
Upgrade your engine's performance and durability with this Wossner forged piston kit. Engineered for strength and reliability, this piston kit features an oversized forged design with a 57.50mm bore, providing enhanced combustion chamber heat transfer and optimized load distribution. The elliptical design ensures even thrust load, reducing localized pressure and preventing piston collapse for extended engine life. Manufactured in Germany, Wossner pistons are synonymous with high performance and superior quality.
Key Features:
- Oversized forged piston (+1.50mm) for increased durability and performance.
- Elliptical piston design for even thrust load distribution, reducing wear.
- Optimized heat transfer to cylinder walls for improved efficiency.
- Precision manufactured in Germany for exceptional quality and reliability.
Specifications:
- Bore Size: 57.50mm
- Standard Bore: 57.44mm
- Displacement: 123 cm³
- Stroke: 64.40mm
- Clearance: 0.06mm
- Compression Ratio: 2-Stroke
- Compression Height: 32.00mm
- Piston Part Number: 8151D150
- Ring Set Part Number: RSB5750 x 2
- Clip Part Number: CW14 / Set
- Pin Part Number: WP025
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.