PISTON KIT 10-14 RMZ250 77 HC, COMP 14:1 WOSSNER 8795DB
4.1 Trustpilot 99.9% positive on eBay
Free UK delivery 2–4 business days
Spread the cost with 
18+, T&Cs apply
Wossner forged piston kit with a 77.01mm bore and 76.97mm diameter. This high-compression piston is engineered for superior strength and optimized heat transfer. Its elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Features include high-compression for increased performance, forged construction for superior strength, optimized heat transfer for efficient combustion, elliptical design for uniform load distribution, and it is manufactured in Germany. Specifications include bore 77.01mm, diameter 76.97mm, display (cm³) 249, stroke (mm) 53.60, clearance (mm) 0.06, Wossner compression ratio 14.00:1, OEM compression ratio 13.50:1, dome volume (cm³) -2.10, and compression height (mm) 19.60. Cross-reference OEM part numbers include Wossner Piston Kit (PN# 8795DB), Lock P/N: CW16, Pin P/N: WP070, and Ring Set P/N: 770XAS-2.
- SKU
- 56-W260.B.WO
- Brand
- Wossner
- Availability
- In Stock (1)
Fitments (11)
| Make | Model | Year |
|---|---|---|
| SUZUKI | RM-Z 250 | 2010 |
| SUZUKI | RM-Z 250 | 2011 |
| SUZUKI | RM-Z 250 | 2012 |
| SUZUKI | RM-Z 250 | 2013 |
| SUZUKI | RM-Z 250 | 2014 |
| SUZUKI | RM-Z 250 | 2015 |
| SUZUKI | RM-Z 250 | 2016 |
| SUZUKI | RM-Z 250 | 2017 |
| SUZUKI | RM-Z 250 | 2018 |
| SUZUKI | RM-Z 250 | 2019 |
| SUZUKI | RM-Z 250 | 2020 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 77mm
- Variant Id
- 255283
FULL DESCRIPTION
Wossner Forged High-Compression Piston Kit
Enhance your motorcycle's performance with this Wossner forged piston kit. Engineered for strength and optimal heat transfer, this high-compression piston is designed to deliver superior power output. The advanced elliptical design ensures uniform load distribution and reduces localized pressure, preventing piston collapse even under extreme heat expansion. Manufactured in Germany to exacting standards.
Key Features:
- High-compression design for increased engine power
- Robust forged construction for exceptional durability
- Optimized heat transfer for efficient combustion and performance
- Elliptical piston profile for uniform bearing surface and even load distribution
- Precision manufacturing in Germany
Specifications:
- Bore: 77.01mm
- Diameter: 76.97mm
- Display (cm³): 249
- Stroke (mm): 53.60
- Clearance (mm): 0.06
- Wossner Compression Ratio: 14.00:1
- OEM Compression Ratio: 13.50:1
- Dome Volume (cm³): -2.10
- Compression Height (mm): 19.60
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. 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.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.