2Bros Parts

PISTON KIT 10-22 RMZ250 77mm B, WOSSNER SUZUKI 8781DB

£197.46Only 1 left

4.1 Trustpilot 99.9% positive on eBay

Free UK delivery 2–4 business days

Spread the cost with Klarna 18+, T&Cs apply

1

Wossner 77.01mm B piston kit. This Wossner forged piston is superior in strength and design, engineered to provide the best possible path for combustion chamber heat transfer to cylinder walls. It is elliptically designed to provide a more uniform bearing surface under piston heat expansion, eliminating localized pressure and distributing thrust loads more evenly, thereby preventing piston collapse. Made in Germany. Part number 8781DB. Includes lock P/N CW16, pin P/N WP070, and ring set P/N 770XAS-S. Display (cm3) 249. Hub stroke (mm) 53.80. Clearance (mm) 0.04. Wossner compression Ratio: 13.60:1. OEM Compression ratio: 13.50:1. Dome volume (cm3) -2.60. Compression height (mm) 19.60. Theoretical weight (G) 224.

Specifications
SKU
56-W951.B.WO
Brand
Wossner
Availability
In Stock (1)

Fitments (16)

MakeModelYear
SUZUKIRM-Z 2502010
SUZUKIRM-Z 2502011
SUZUKIRM-Z 2502012
SUZUKIRM-Z 2502013
SUZUKIRM-Z 2502014
SUZUKIRM-Z 2502015
SUZUKIRM-Z 2502016
SUZUKIRM-Z 2502017
SUZUKIRM-Z 2502018
SUZUKIRM-Z 2502019
SUZUKIRM-Z 2502020
SUZUKIRM-Z 2502021
SUZUKIRM-Z 2502022
SUZUKIRM-Z 2502023
SUZUKIRM-Z 2502024
SUZUKIRM-Z 2502025
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
77.00mm
Variant Id
258347
Delivery2–4 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Wossner Piston Kit for Suzuki RM-Z250

This Wossner piston kit is designed for high-performance engines, offering superior strength and advanced design. Engineered in Germany, these pistons are built to optimize combustion chamber heat transfer to the cylinder walls. The elliptical design ensures a more uniform bearing surface, even under extreme heat expansion, which helps prevent localized pressure and distributes thrust loads evenly, thus avoiding piston collapse.

Key Features:

  • Forged pistons for exceptional strength and durability.
  • Engineered for optimal heat transfer to cylinder walls.
  • Elliptical design to manage heat expansion and distribute thrust loads evenly.
  • Precision manufacturing ensures a uniform bearing surface.
  • Made in Germany to exacting standards.

Specifications:

  • Bore Size: 77.01mm
  • Piston Type: B
  • Part Number: 8781DB (+0.01MM)
  • Lock Pin Part Number: CW16
  • Pin Part Number: WP070
  • Ring Set Part Number: 770XAS-S
  • Engine Displacement (cm³): 249
  • Stroke (mm): 53.80
  • Clearance (mm): 0.04
  • Wossner Compression Ratio: 13.60:1
  • OEM Compression Ratio: 13.50:1
  • Dome Volume (cm³): -2.60
  • Compression Height (mm): 19.60
  • Theoretical Weight (G): 224
Before you buy

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.

Apply for Trade
1