Wossner Pro Series Piston Kit for 4-Stroke 77.01mm Bore

Elevate your motorcycle's performance with the Wossner Pro Series 4-stroke piston kit, engineered for superior power and reliability. This premium kit delivers enhanced durability and a significant boost to your engine's efficiency, making it an ideal upgrade for demanding riders and engine builders.

Description

Designed by Wossner, a leader in high-performance engine components, this Pro Series 4-stroke piston kit is crafted from a robust forged aluminum alloy, ensuring exceptional strength and longevity under extreme conditions. With a precise 77.01 mm bore size and a 13.7:1 compression ratio, it’s built to maximize power output and optimize combustion efficiency. The piston features advanced lubrication enhancements, including expanded piston pin oiling slots, radial boss machining, and annular grooves, all working in concert to significantly improve wrist pin lubrication and extend component life. Its lightweight design coupled with a tight piston wall clearance contributes to a noticeably quieter running engine, while the specialized skirt coating reduces friction, promoting a smoother break-in and sustained performance. Furthermore, the ring land treatment ensures an improved ring seal and superior oil control, critical for maintaining peak engine health and reducing oil consumption. This kit provides a comprehensive solution for engine rebuilds or performance enhancements, embodying Wossner's commitment to quality and innovation.

Features & Highlights

• Optimized Wrist Pin Lubrication: Enhanced piston pin oiling slots, radial boss machining, and annular grooves dramatically improve lubrication, reducing wear and extending the lifespan of your wrist pin.
• Quiet & Efficient Operation: A lightweight piston design combined with a tight piston wall clearance minimizes mechanical noise, resulting in a smoother and quieter running engine.
• Reduced Friction & Improved Break-in: The advanced skirt coating significantly lowers friction, leading to a more efficient engine operation and a quicker, more effective break-in period.
• Superior Ring Seal & Oil Control: Specialized ring land treatment ensures an excellent seal for piston rings, optimizing combustion efficiency and maintaining precise oil control within the cylinder.
• Exceptional Durability: Featuring a double bridged forging design (where applicable), this piston offers superior structural integrity and resilience against the stresses of high-performance riding.
• Complete Rebuild Solution: Each kit comes complete with the high-performance piston, precision-matched rings, a durable wrist pin, and secure pin locks, providing everything needed for a seamless installation.

Technical Specifications

• Brand: Wossner
• Model: Pro Series
• Engine Type: 4-Stroke
• Piston Material: Forged Aluminum Alloy
• Compression Ratio: 13.7:1
• Bore Size: 77.01 mm
• Piston Size: 76.96 mm
• Stroke Length: 53.60 mm
• Bore - Oversize: +0.01 mm
• Style: Standard Size B
• Units: Kit
• Vendor Part Number: 8942DB

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