Wiseco Piston Kit 95mm STD 13:1 – Yamaha YFZ450 / YFZ450R (2004–2018)

🛠️ Description

Upgrade your Yamaha YFZ450 or YFZ450R with the Wiseco 95.00mm Standard Bore Forged Piston Kit (13:1 compression)—part number 4835M09500. Designed for racers who demand maximum horsepower and throttle response, this piston combines lightweight forged construction with Wiseco’s advanced engineering for unbeatable performance and reliability.

The 13:1 high compression ratio delivers explosive acceleration and top-end gains, ideal for competitive racing and aggressive riding. Forged from high-silicon, low-expansion aluminum, the piston ensures superior strength, reduced weight, and improved heat transfer—outperforming OEM cast pistons every time.

✅ What’s Included

• 95.00mm forged piston (13:1 compression)

• Piston rings

• Wrist pin

• Circlips

📦 Fitment

• Yamaha YFZ450R: 2009–2018 (including SE models)

• Yamaha YFZ450: 2004–2013 (including Bill Balance Edition & SE models)

• Yamaha YFZ450X: 2010–2011 (including SE)

🛡️ Features

• Forged from high-silicon, low-expansion aluminum for superior strength & durability

• 13:1 compression ratio for race-ready power gains

• Diamond-turned CNC finish ensures perfect sizing and fit

• Compatible with all cylinder bore compositions (OEM or aftermarket)

• Lightweight design reduces rotating mass, improving throttle response

• Built in Wiseco’s state-of-the-art manufacturing facility for consistency and precision

📏 Specifications

• Part Number / Brand Number: 4835M09500 (4835PS)

• Bore Size: 95.00mm (STD)

• Compression Ratio: 13:1

• Weight: 1.00 lbs

• Package Dimensions: 5.10 × 5.10 × 4.30 in