Wossner Pro Piston Kit for Yamaha YZ250F/FX 76.95mm

Upgrade your Yamaha YZ250F (2014-2015) or YZ250FX (2015-2016) with the high-performance Wossner Pro Piston Kit. This 76.95mm bore piston kit is engineered to deliver superior durability and power, making it an essential component for competitive riders and enthusiasts seeking maximum engine reliability and output.

Description

Experience unmatched engine performance and longevity with the Wossner Pro Piston Kit, specifically designed for your Yamaha YZ250F and YZ250FX models. Crafted from high-strength forged aluminum alloy, this piston is built to withstand the rigors of aggressive riding and racing, offering significantly improved durability over standard cast pistons. Its precision-machined 76.95mm bore and optimized dome design ensure an ideal 13.5:1 compression ratio, translating to enhanced combustion efficiency, increased horsepower, and snappier throttle response. The advanced molybdenum-disulfide (MoS2) skirt coating actively reduces friction and wear, extending the piston's lifespan and contributing to smoother engine operation. With its lightweight and balanced construction, this Wossner piston kit minimizes reciprocating mass, allowing your 250cc engine to rev quicker and deliver improved acceleration. Each kit comes complete with all necessary components for a seamless rebuild, including the forged piston, high-quality piston rings, a durable wrist pin, and secure circlips.

Features & Highlights

• Superior Forged Construction: Engineered from high-strength forged aluminum alloy, providing exceptional durability and resistance to extreme temperatures and pressures for a significantly longer lifespan.
• Optimized Performance Design: Features a precision-machined piston dome and a 13.5:1 compression ratio, specifically tuned to maximize power output, throttle response, and combustion efficiency for your YZ250F/FX.
• Advanced Friction Reduction: Equipped with a specialized molybdenum-disulfide (MoS2) skirt coating that minimizes friction and wear, enhancing piston longevity and contributing to smoother, more efficient engine operation.
• Lightweight & Responsive: Designed with minimal reciprocating mass to reduce engine vibration, promote quicker revving, and deliver a noticeable improvement in acceleration and overall engine dynamics.
• Complete & Convenient Kit: Includes everything required for a full piston replacement: the high-performance forged piston, premium piston rings, a robust wrist pin, and reliable circlips for a straightforward installation.
• Precision Fitment: Manufactured to exact specifications for the Yamaha YZ250F (2014-2015) and YZ250FX (2015-2016) with a 76.95mm bore, ensuring a perfect, reliable fit and optimal engine function.

Technical Specifications

• Brand: Wossner
• Vendor Part Number: 8893DA
• Bore Size: 76.95mm
• Engine Displacement: 250cc
• Compression Ratio: 13.5:1
• Piston Type: Pro Series, Forged
• Material: High-strength Forged Aluminum Alloy
• Skirt Coating: Molybdenum-Disulfide (MoS2)
• Compatibility: Yamaha YZ250F (2014-2015), Yamaha YZ250FX (2015-2016)
• Kit Contents: Piston, Piston Rings, Wrist Pin, Circlips

Important to Know

• Professional installation is highly recommended for optimal performance and longevity.
• Gaskets, bearings, and other engine rebuild components are sold separately and are not included with this piston kit.