1. Pistons, Rings & Piston Kits Products
  2. sku: 8038534910003632
  3. WISECO 4785MO9500

WISECO 4785MO9500 Forged Piston Rings Pin Comp 4785M09500 95MM 12.5

fits model: Wr450f, Yz450f. make: Yamaha.

4785m09500 Wiseco 4785mo9500 95mm Forged Piston Rings Pin Yamaha Wr450f Yz450f 12.5 1 Comp

( Brand: Wiseco ), ( Manufacturer Part Number: 4785MO9500 ), ( Machine Type: Dual Sport Motorcycle, Off-road Motorcycle ), ( Items Included: Piston Rings, Wrist Pin, Forged Piston, Circlips ), ( Piston Diameter: 95.00mm ), ( Material: Aluminum Alloy, Steel, Forged Aluminum ), ( Engine Type: 4-stroke ), ( Type: Piston ), ( Manufacturer Warranty: Yes ), ( Cylinder Bore Diameter: 3.741 ), ( Pin Diameter: 18.00mm ), ( Surface Finish: Forged Aluminum ), ( Country/region Of Manufacture: United States ), ( Unit Quantity: Each )

Review WISECO 95mm Forged Piston Rings Pin Yamaha 12.5 Comp fits WR450F YZ450F

Introducing the WiseCO 4785MO9500/M09500 95mm Forged Piston Rings Pin Set, specifically designed for Yamaha WR450F and YZ450F motorcycles with a 12.5:1 compression ratio. This set of piston rings is an essential upgrade for riders seeking maximum engine performance and durability.

The WiseCO 4785MO9500/M09500 piston rings are manufactured using state-of-the-art forging technology, ensuring superior strength and precision. Forged piston rings offer enhanced resistance to engine heat and pressure, making them an ideal choice for high-performance applications. The rings are engineered to provide a perfect seal, preventing combustion gases from escaping the cylinder, and maintaining optimal compression.

This piston ring set includes the following components:

1. Compressor Ring: The inner-most piston ring, responsible for sealing the combustion chamber. It features a low-tension design that ensures efficient compression and minimizes friction.

2. Second Compressor Ring: This ring is designed to work in conjunction with the compressor ring, providing an additional seal and reducing blow-by gases. Its unique design allows for a tighter ring gap, enhancing combustion efficiency.

3. Oil Control Ring: The third piston ring, located just above the compressor rings, is responsible for controlling the oil flow in the engine. It features a specially designed groove that maintains a consistent oil film on the piston, reducing friction and improving engine life.

4. Top Oil Ring: The outermost piston ring, designed to ensure the proper lubrication of the piston skirt. It features a wide, flat, and thick design, ensuring a large oil film for optimal piston lubrication.

The WiseCO 4785MO9500/M09500 95mm Forged Piston Rings Pin Set is the perfect upgrade for riders who demand the best from their motorcycle. It offers improved engine performance, increased durability, and enhanced combustion efficiency. Each ring is meticulously manufactured and tested to ensure the highest quality and reliability. Upgrade your Yamaha WR450F or YZ450F today with the WiseCO 4785MO9500/M09500 Forged Piston Rings Pin Set.

Wiseco 4785MO9500/4785M09500 95mm Forged Piston Rings for Yamaha WR450F and YZ450F: A Detailed Analysis

Introduction:

The Wiseco 4785MO9500 and 4785M09500 forged piston rings are aftermarket options designed for the Yamaha WR450F and YZ450F motorcycles with a 12.5:1 compression ratio. These piston rings offer several advantages over stock rings, including improved performance and durability. In this analysis, we will examine the pros and cons of purchasing these Wiseco piston rings.

Pros:

1. Enhanced Performance: Forged piston rings provide better sealing, ensuring optimal combustion efficiency. This results in improved power output and increased horsepower.

2. Durability: Forged piston rings are stronger and more resilient than stock rings, reducing the risk of ring failure and engine damage.

3. Customization: Aftermarket piston rings allow riders to fine-tune their engine's compression ratio to suit their riding style and specific riding conditions.

4. Improved Engine Longevity: By providing better sealing and reducing friction, these rings can help extend the life of the engine.

Cons:

1. Cost: Aftermarket piston rings can be more expensive than stock rings. However, the potential performance and durability benefits may justify the investment for some riders.

2. Installation Complexity: Installing aftermarket piston rings requires more extensive engine disassembly compared to stock rings. This can be time-consuming and may require specialized tools.

3. Potential Power Increase: While some riders may appreciate the increased power output, others may prefer a more stock power level. It's essential to consider the riding conditions and personal preferences before installing these piston rings.

Conclusion:

The Wiseco 4785MO9500 and 4785M09500 forged piston rings offer several advantages for Yamaha WR450F and YZ450F owners, including improved performance, durability, and customization. However, these benefits come at a cost, both financially and in terms of installation complexity. Ultimately, the decision to purchase these piston rings depends on the rider's personal preferences, riding style, and budget.

Recommendation:

If you're an aggressive rider looking for improved performance and durability, the Wiseco 4785MO9500 and 4785M09500 forged piston rings are an excellent investment. However, if you're a casual rider or prefer a more stock power level, these rings may be an unnecessary expense. Before making a purchase, consider the potential benefits and drawbacks, and weigh them against your riding style and preferences.

Details:

BRAND NEW !!, WISECO HIGH PERFORMANCE FORGED STANDARD BORE PISTON FOR YAMAHA WR450F YZ450F AS WELL GAS EC450F APPLICATIONS, PART NUMBER: 4785M095 TO FIT: 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 YAHAMA YZ450F, EC450F, INCLUDES: 1x 4785M09500 95mm 12.5:1 COMPRESSION 3741XS 95.00mm RING SET S600 18.00mm WRIST PIN CW18 18mm ROUND WIRE LOCKS / CIRCLIPS PAIR , I HAD ONE OF THESE PISTONS AND PROMPTLY SOLD IT.

part #: 4785mo9500 prices

  • $203.97-$219.99

specifications pistondon:

  • for models: Wr450f, Yz450f
  • for makes: Yamaha
  • brand: Wiseco
  • mpn: 4785mo9500
  • machine type: Dual Sport Motorcycle, Off-road Motorcycle
  • items included: Piston Rings, Wrist Pin, Forged Piston, Circlips
  • piston diameter: 95.00mm
  • material: Aluminum Alloy, Steel, Forged Aluminum
  • engine type: 4-stroke
  • type: Piston
  • manufacturer warranty: Yes
  • cylinder bore diameter: 3.741
  • pin diameter: 18.00mm
  • surface finish: Forged Aluminum
  • country/region of manufacture: United States
  • unit quantity: Each

payments pistondon:

  • wallet: Paypal
  • other
  • credit card: Discover

shipping pistondon:

  • transit: 5-10 Days
  • service: USPS First Class, USPS Priority Mail, USPS Priority Mail Express
  • carrier: USPS
  • class: Standard, Expedited
  • type: Calculated
  • cost: $0.00

general pistondon:

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

returns pistondon:

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

seller pistondon:

  • rating: 100.0%
  • # reviews: 22363
  • city: Clearwater, Florida

offer pistondon:

  • options: Ship-to-home
  • quantity: 1
  • availability: In Stock
  • started: August 31, 2025
  • sold: 0
for models: wr450f, yz450f, for makes: yamaha, machine type: dual sport motorcycle, off-road motorcycle, items included: piston rings, wrist pin, forged piston, circlips, piston diameter: 95.00mm, engine type: 4-stroke, type: piston, manufacturer warranty: yes, cylinder bore diameter: 3.741, pin diameter: 18.00mm, surface finish: forged aluminum, country/region of manufacture: united states, unit quantity: each,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, material: aluminum alloy, steel, forged aluminum, sku: 8038534910003632,

Wiseco 4785MO9500 Is Similar To:

pistondon logo
5 offers $203.97–$219.99 USD
  • Offer #1: $219.99 price + $0.00 shipping estimate = $219.99* total. -Extended life and sustain power. Wiseco Forged Piston Kit.FREE SHIPPING
  • Offer #2: $203.97 price + $0.00 shipping estimate = $203.97* total. Racer's Choice: Pistons are single-ring 2-Stroke or two ring 4-Stroke; Reduced weight and friction with increased power and throttle response; Service intervals may be increased over conventional Wiseco Pistons. Computer engineered piston skirt profiles provide minimal cylinder wall friction.FREE SHIPPING
  • Offer #3: $219.99 price + $0.00 shipping estimate = $219.99* total. Wiseco pistons can be installed in Wiseco Piston Kit Standard Bore 95.00mm, 12.5:1 Compression.FREE SHIPPING
  • Offer #4: $163.18 price + $0.00 shipping estimate = $163.18* total. WISECO HIGH PERFORMANCE FORGED STANDARD BORE PISTON FOR YAMAHA WR450F + YZ450F AS WELL AS GAS GAS EC450F APPLICATIONS. WISECO PART NUMBER:.FREE SHIPPING
  • Offer #5: $203.97 price + $0.00 shipping estimate = $203.97* total. Moly-coated piston skirts. Model Number:.FREE SHIPPING

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