PRO-X PX-4042 Piston Kit Step 84-01 OV2 89.50MM

( Brand: Pro-x ), ( Manufacturer Part Number: PX-4042 ), ( Type: Piston Kit ), ( Piston Diameter: 89.50 Mm )

Review PRO X Honda Prox Piston Kit .50mm Step Ov2 fits CR500 1984–2001

Introducing the Pro-X PX-4042 piston kit, specifically designed for Honda CR500 motorcycles manufactured between 1984 and 2001. This high-performance piston kit is an excellent upgrade for riders seeking enhanced power and reliability.

The Pro-X PX-4042 piston kit comprises a complete set of four pistons, each one engineered to deliver superior performance. These pistons boast a 50mm step, which is an ideal size for the CR500 engine, ensuring a perfect fit and optimal engine function.

The piston crown's unique shape in this kit is designed to provide better combustion efficiency and increased power output. Additionally, these pistons feature an oversize diameter of 89.50mm, which helps increase the engine's displacement and, consequently, its power output.

Constructed using a high-strength material, these pistons provide unmatched durability and resistance to engine stress. Their robust design enables them to withstand the rigors of off-road riding, making them an ideal choice for CR500 riders who push their machines to the limit.

Installing the Pro-X PX-4042 piston kit is a straightforward process. The pistons come with rings and pins, ensuring a complete and hassle-free installation. Additionally, the kit includes detailed instructions to guide you through the process.

In summary, the Pro-X PX-4042 piston kit is a must-have upgrade for Honda CR500 motorcycles produced between 1984 and 2001. This kit offers significant improvements in power output, reliability, and durability, making it an essential addition for riders who demand the best from their off-road machines.

The Honda CR500 is a legendary enduro motorcycle known for its power and agility. Replacing the piston on this bike can be a worthwhile investment for those seeking improved performance or addressing wear and tear. The Pro-X PX-4042 kit is a popular option for CR500 owners, offering a 50mm step-up piston with an oversize 89.50mm bore. Here are some potential advantages and disadvantages of purchasing this piston kit:

1. Increased power: The oversize piston and bore result in increased engine displacement and, consequently, more power output. This can be beneficial for riders seeking improved performance on the trail or race track.

2. Enhanced combustion: The piston design in the Pro-X kit may offer better combustion efficiency, leading to a smoother running engine and potentially better fuel economy.

3. Durability: The piston kit is made from high-quality materials, and the oversize design may help reduce engine stress and heat, potentially extending the overall lifespan of the engine.

1. Cost: The piston kit can be a significant investment, especially when compared to the cost of a stock piston. Riders should consider their budget and the potential benefits before deciding to purchase.

2. Installation complexity: Installing a new piston kit can be a challenging task, requiring specialized tools and a good understanding of engine mechanics. Riders should be prepared for the time and effort involved in the installation process.

3. Potential compatibility issues: The Pro-X piston kit may not be compatible with all CR500 models or aftermarket modifications. Riders should verify compatibility before making a purchase.

In conclusion, the Pro-X PX-4042 piston kit for the Honda CR500 can offer increased power, enhanced combustion, and potential durability benefits. However, the investment required, installation complexity, and potential compatibility issues should be carefully considered before making a purchase. Ultimately, this piston kit may be a worthwhile investment for dedicated CR500 enthusiasts seeking improved performance and a more robust engine.

For those considering the Pro-X PX-4042 piston kit for their Honda CR500, it is strongly recommended that they thoroughly research the benefits, compatibility, and installation requirements before making a purchase. Additionally, seeking the advice of a knowledgeable mechanic or Honda CR500 expert can help ensure a successful installation and optimal performance.

Details:

Verify the Provided part code with a reliable source for Proper fitment. The piston is .5mm over bore, for an 89.5mm total measurement. This is a new ProX piston kit for 1984 2001 Honda CR500. The kit is new and complete, but the box has shelf wear.

part #: px4042 price

• $179.99

specifications pistondon:

• for models: Cr500
• for makes: Honda
• for years: 1984-2001
• brand: Pro-x
• mpn: Px-4042
• type: Piston Kit
• piston diameter: 89.50 Mm

shipping pistondon:

• type: Fixed
• cost: $0.00
• class: Economy
• service: Economy
• transit: 4-10 Days

offer pistondon:

• options: Ship-to-home
• sold: 0
• quantity: 1
• started: April 17, 2026
• availability: In Stock

payments pistondon:

• other
• wallet: Google-pay
• credit card: Diners-club

seller pistondon:

• # reviews: 706
• city: Allentown, Pennsylvania
• rating: 100.0%

general pistondon:

• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
• condition: New other see details

returns pistondon:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

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