PISTON KIT SET/4 R1, FZR, RX1, WOSSNER K8840D200-4 YAMAHA
Wossner piston kit set of 4 for R1, FZR, RX1. Features forged Wossner pistons with a +2.00mm oversized bore (76.00mm bore, 75.95mm actual piston diameter). Elliptical design for uniform pressure under thermal expansion, improving durability and reducing mechanical failure risk. Engineered for efficient combustion heat transfer. Made in Germany. Increases engine displacement to 1051cc. Part Number: K8840D200-4. Stroke: 58.00mm. Clearance: 0.05mm. Wossner Compression Ratio: 10.20:1. OEM Compression Ratio: 11.80:1. Dome Volume: -2.60cm³. Compression Height: 22.80mm. Cross-reference OEM part numbers: Clip CW17, Piston Pin WP083, Replacement Ring Set 760XDS.
- SKU
- 56-W9900.200.WO
- Brand
- Wossner
- Availability
- In Stock (1)
FULL DESCRIPTION
Wossner Piston Kit Set for Yamaha R1, FZR, RX1
Upgrade your Yamaha R1, FZR, or RX1 engine with this high-performance Wossner Piston Kit. Engineered for durability and increased displacement, this kit features four forged pistons designed to enhance your motorcycle's power output.
Key Features:
- Set of 4 premium forged Wossner pistons
- Oversized bore: +2.00mm, resulting in a 76.00mm bore diameter (actual piston diameter 75.95mm)
- Elliptical piston design optimizes thrust load distribution and manages thermal expansion for greater reliability
- Promotes efficient heat transfer from combustion to cylinder walls
- Manufactured in Germany to exacting standards
- Increases engine displacement to 1051cc
Specifications:
- Part Number: K8840D200-4
- Bore Size: 76.00mm (actual piston size 75.95mm)
- Total Displacement: 1051cc
- Displacement Range Displayed: 998 / 1024 / 1051 cm³
- Stroke: 58.00mm
- Clearance: 0.05mm
- Wossner Compression Ratio: 10.20:1
- OEM Compression Ratio: 11.80:1
- Dome Volume: -2.60cm³
- Compression Height: 22.80mm
Included Components & Replacements:
- Clip: CW17
- Piston Pin: WP083
- Replacement Ring Set: 760XDS


