Product Details & Notes

Use the part facts above for quick reference. These notes may include fitment, condition, or other seller details from the original listing.

PK1850
4731M09500
OEM 59030007000
Wiseco 4 Stroke Forged Series Piston Kit – 95.00 mm Bore
The Wiseco team has remained at the forefront of powersports performance through every era and evolution, including the development of high-performance 4-strokes. Today, Wiseco’s forged 4-stroke pistons are designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength. Proven at every level of riding, Wiseco 4-stroke pistons are ready to deliver the power and reliability you’re looking for.Engineered, forged, and machined in the USA in Mentor, OH, Designed and built for each specific 4-stroke powersports engine, Improved tensile strength of forged material optimizes strength and service life, Dedicated forgings allow for optimized strength-to-weight ratio, Includes high-quality piston rings, wrist pin(s), and circlips.
520 EXC 2000-2002
520 SX 2000-2002
525 EXC Racing 2003-2007
525 SX 2003-2006

Product Series 4 Stroke Forged Series
Included Components Piston #4731M09500, Ring Set #7700XU, Wrist Pin #S641, CirClip #CW16, Gasket #W5885
Bore Diameter 95.00 MM
Piston Diameter 94.92 MM
Compression Ratio Actual 11:1
Piston Material 2618
Skirt Coating No
Piston Oversize STD
((( 10166 FAS )))
⚠️ IMPORTANT BUYER NOTICE – PLEASE READ BEFORE ORDERINGBuyer Responsibility:It is the buyer’s responsibility to contact us before submitting payment if you would like signature confirmation and/or shipping insurance added to your order. These are inexpensive options that help protect against porch pirates, theft, and fraud.Shipping Costs:We do not set shipping prices. Shipping fees are automatically calculated by the eBay shipping calculator based on package weight, size, and your destination.If you believe you can ship the item cheaper or faster, we are happy to use your own shipping label. In that case, there will be no additional shipping or handling charges from us.Shipping Carrier Notice:Due to performance issues with some carriers, we may change shipping companies for your order (at no extra cost to you) to ensure timely delivery. We reserve the right to add signature required to any order.If you cannot receive packages from certain carriers (such as USPS, FedEx, or UPS), you must contact us before or immediately after placing your order.