PISTON KIT XR400 TRX400 87.00, FORGED WOSSNER 8604D200
4.1 Trustpilot 99.9% positive on eBay
Delivery to United States 5–8 business days
Wossner forged piston kit with an 87mm bore. Manufactured in Germany, this high-performance piston enhances strength, heat transfer, and durability. The elliptical design ensures uniform bearing surface distribution, reducing localized pressure and preventing piston collapse. Features forged construction for superior strength and durability, optimized heat transfer to cylinder walls, elliptical design for uniform bearing surface under heat expansion, and increased compression ratio for improved engine performance. Specifications: Bore 87mm (86.94mm actual), Displacement 397 cm³, Stroke 70.00mm, Clearance 0.06mm, Wossner Compression Ratio 11.00:1, OEM Compression Ratio 10.00:1, Dome Volume +3.20 cm³, Compression Height 26.20mm. Wossner Piston: 8604D200, Lock: CW20, Pin: WP052, Ring Set: 870XSY, Rod: P4021.
- SKU
- 56-W4606+200.WO
- Brand
- Wossner
- Availability
- Out of Stock
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 87mm
- Variant Id
- 255774
FULL DESCRIPTION
Wossner Forged Piston Kit 87.00mm for XR400 and TRX400
This Wossner forged piston kit features an 87mm bore, designed to enhance the performance and durability of your motorcycle or ATV engine. Manufactured in Germany, Wossner pistons are engineered for superior strength and optimal heat transfer. The unique elliptical design ensures consistent bearing surface distribution, even under extreme operating temperatures, effectively reducing localized pressure and preventing premature wear or piston collapse. This kit is built to deliver increased power and reliability.
Key Features:
- Forged Construction: Provides exceptional strength and longevity for demanding applications.
- Optimized Heat Transfer: Ensures efficient cooling and consistent cylinder wall temperatures.
- Elliptical Design: Promotes uniform bearing surface distribution for reduced stress and improved durability under thermal expansion.
- Increased Compression Ratio: Boosts engine performance for greater power output.
- High-Quality Manufacturing: Proudly made in Germany for precision and reliability.
Specifications:
- Bore Size: 87.00mm (Actual: 86.94mm)
- Displacement: 397 cm³
- Stroke: 70.00mm
- Piston Clearance: 0.06mm
- Wossner Compression Ratio: 11.00:1
- OEM Compression Ratio: 10.00:1
- Dome Volume: +3.20 cm³
- Compression Height: 26.20mm
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.