2Bros Parts

PISTON KIT 04-06 RMZ250 77 HC, FORGED WOSSNER 8661DA K1300-10052

£195.02

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 forged high-compression piston kit with a 77mm bore (76.96mm). Designed for superior strength and heat transfer efficiency, this piston ensures optimal combustion performance. The elliptical design distributes thrust loads evenly, reducing localized pressure and preventing piston collapse. Manufactured in Germany. Features: High-compression forged piston for increased performance, optimized heat transfer for improved efficiency, elliptical design ensures uniform bearing surface under heat expansion, even thrust load distribution to prevent piston collapse, manufactured in Germany. Specifications: Bore Size: 77mm (76.96mm), Compression Ratio: 13.5:1, Part Number: 8661DA, Lock Part Number: CW16, Pin Part Number: WP059, Ring Set Part Number: 770XAS-2, Rod Part Number: P4002, Displacement: 249 cm³, Stroke: 53.60mm, Clearance: 0.04mm, Wossner Compression Ratio: 13.2:1, OEM Compression Ratio: 12.6:1, Dome Volume: -4.00 cm³, Compression Height: 19.60mm. Cross-Reference OEM Part Numbers: K1300-10052, 4843M07700.

Specifications
SKU
56-W306.A.WO
Brand
Wossner
Availability
In Stock (2)

Fitments (3)

MakeModelYear
SUZUKIRM-Z 2502004
SUZUKIRM-Z 2502005
SUZUKIRM-Z 2502006
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
77mm
Variant Id
255353
Delivery2–4 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Wossner Forged High Compression Piston Kit - 77mm Bore

Enhance your motorcycle's performance with this Wossner forged high-compression piston kit. Engineered for superior strength and optimal combustion, this piston is designed to deliver increased power and efficiency.

Key Features:

  • High-compression forged design for a significant performance boost.
  • Advanced heat transfer technology for improved operational efficiency.
  • Innovative elliptical piston design ensures even thrust load distribution, preventing localized pressure and piston collapse under heat.
  • Precision manufactured in Germany for exceptional quality and durability.

Specifications:

  • Bore Size: 77mm (76.96mm actual)
  • Compression Ratio: 13.5:1 (Wossner) / 12.6:1 (OEM)
  • Dome Volume: -4.00 cm³
  • Compression Height: 19.60mm
  • Piston Pin Part Number: WP059
  • Ring Set Part Number: 770XAS-2
  • Lock Part Number: CW16
  • Stroke: 53.60mm
  • Clearance: 0.04mm
  • Displacement: 249 cm³
  • Part Number: 8661DA
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