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Wiseco 4591M07500 Big Bore Forged Piston Kit Compression - 75mm 13 1

(1994-1997 Kawasaki ZX900 Ninja ZX-9R)

Part of: Wiseco Pistons Forged Piston Kit Compression

Other options in this family: Wiseco Pistons 40071M05400 Wiseco Pistons 40109M08300 Wiseco Pistons 40078M07400 Wiseco Pistons 40086M09600 Wiseco Pistons 4629M07500

Manufacturer

Picture for manufacturer Wiseco Pistons

Part Number

4591M07500
7 reviews
Sale Price

$211.99

Estimated ship date Monday, November 23

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Product Details

The Wiseco 4591M07500 is a high-performance forged 4-stroke piston kit engineered for the Kawasaki ZX-9R (1994–1997). Expanding displacement to 950cc with a 75.00mm bore and 13:1 compression ratio, this big bore kit is purpose-built to maximize horsepower and torque for serious street and performance applications.

Key Features:

  • Forged high-silicon aluminum alloy construction for superior strength and long-term dependability
  • 75.00mm actual bore (2.00mm oversize from the standard 73.00mm bore) — cylinder boring required
  • 13:1 compression ratio for increased power output
  • Optimized piston skirt design for maximum horsepower and torque delivery
  • Dedicated forging engineered specifically for this engine application, optimizing the strength-to-weight ratio
  • Engineered, forged, and machined in the USA in Mentor, OH
  • Built to tight tolerances for reliable, consistent performance
  • Wiseco 4591M07500 forged piston (75mm, 13:1)
  • Wiseco 2953XG 75.00mm piston ring set
  • Wiseco S343 18.00mm wrist pin
  • Wiseco CW18 18mm round wire wrist pin circlips (pair)

Specifications:

  • Displacement: 950cc
  • Standard Bore: 73.00mm
  • Actual Bore: 75.00mm (2.00mm oversize)
  • Stroke: 53.74mm
  • Compression Ratio: 13:1
  • Wrist Pin Diameter: 18.00mm
  • Ring Set: 2953XG

Note: Cylinder boring is required for installation. This is an oversize piston kit. A head gasket (Wiseco W5440) is included. A base gasket (Wiseco W6051) is available separately.

Products specifications

Fits

1994-1997 Kawasaki ZX900 Ninja ZX-9R

Quick and easy transaction, would prefer the packing department used a recyclable material instead of plastic based materials.

I received the tires faster than I was told which was greatly appreciated. Tires were dropped off in front of garage and it great condition. Will definitely buy from here again!

Good

Easy and fast

Smooth online chechout, easy to confirm product availability, fast delivery.

it'll be a 5 star when i have the product

Finding the item was great. There were not many places that had it due to stock shortages from Onan/Cummins. The price was a lot lower than the closest company that stocked it. Ordering was easy. However, I contacted CS due to the fact that the "Tracking" link in the email did not lead me to any type of tracking. The only thing it did was go to the invoice for the order. I was kind of bugged as I was getting ready to head out of town and needed the part. I do web app design and implementation for a living. Someone needs to check the click on links to ensure they go to the proper place.

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