PISTON KIT XT TT SR 500 88.00, FORGED WOSSNER 8505D100
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 88.00 mm bore size for European Yamaha XT500, TT500, and SR500 models. Manufactured in Germany, this piston offers superior strength and heat transfer efficiency due to its forged construction and elliptical design, ensuring even load distribution and preventing piston collapse. Specifications include 87.93 mm actual bore, 84.00 mm stroke, 0.07 mm clearance, 29.00 mm compression height, +13.70 cm³ dome volume, 9.80:1 compression ratio, 449 cm³ displacement, and it is designed for 4-stroke engines. Wossner Part No. 8505D100.
- SKU
- 56-W4045+100
- Brand
- Wossner
- Availability
- In Stock (2)
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 88mm
- Variant Id
- 255512
FULL DESCRIPTION
Wossner Forged Piston Kit for Yamaha XT TT SR 500
Upgrade your Yamaha XT500, TT500, or SR500 with this high-performance Wossner forged piston kit. Expertly manufactured in Germany, this piston is engineered for superior strength, durability, and optimal heat transfer, providing a significant performance advantage for your 4-stroke engine.
The advanced forged construction ensures exceptional resilience under demanding conditions, while the innovative elliptical design promotes even load distribution across the bearing surface. This reduces localized pressure and wear, preventing premature component failure and extending the life of your engine.
Key Features:
- Robust forged construction for enhanced strength and longevity.
- Designed for efficient heat transfer to optimize engine performance.
- Elliptical piston design for uniform load distribution and reduced wear.
- Specifically for 4-stroke engine applications.
Specifications:
- Bore Size: 88.00 mm
- Actual Bore: 87.93 mm
- Stroke: 84.00 mm
- Clearance: 0.07 mm
- Compression Height: 29.00 mm
- Dome Volume: +13.70 cm³
- Compression Ratio: 9.80:1 (compared to OEM 9.00:1)
- Displacement: 449 cm³
- Origin: Made in Germany
Includes:
- Wossner Piston Part Number: 8505D100
- Lock Piston Rings Part Number: CW20
- Pin Part Number: WP052
- Ring Set Part Number: 880XSY
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
Call or email us with your make, model and year 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.


