Whenever possible we use picture of the actual part number. Some items do use stock photos provided by the manufacturer.

 

Wiseco™ started in 1940 on the East Side of Cleveland, Ohio when Clyde Wiseman began making pistons for himself and some of his friends. After almost a century in the business, Wiseco™ has been identified as a piston manufacturer, but they didn't stop there. Wiseco™ went on to making a plethora of innovative motorsports equipment from clutch covers to valve kits, including Wiseco Piston 41mm +1, that will not have you questioning the quality or care that was put in to making them.

Each kit contains everything you need to complete your rebuild the right way, the first time- crankshaft and connecting rod, all applicable bearings, and complete bottom end gasket kit made to meet or exceed OEM.Wiseco connecting rods are double forged from a dedicated forging and feature shot peening, oil slots, and coated bronze thrust washers.Bottom end gasket kits are made from premium materials, exceeding OEM standards, to provide exceptional seal between critical mating surfaces.Main bearings are manufactured to the highest quality standards. Each is case hardened for maximum life and smooth operation at high RPMs.Corrosion resistant surface treatment to prevent corrosion and pitting over long term use or storage. This will add to the life as well the strength of the assembly.Top end of rod is bushed for oil retention and eliminates pin galling. The bottom end rod bores are case hardened to 58-62 RC to optimize bearing running surface.The crank pin bearings are manufactured from the highest quality, hot rolled steel case hardened to 58-62 RC to extend the lifetime of the assembly.Caged needle roller bearings to provide the highest possible RPM.

Images may not be the actual product you will receive to fit your vehicle

• 1988 Yamaha YSR50 --
• 1990 Yamaha YSR50 --
• 1987 Yamaha YSR50 --
• 1992 Yamaha YSR50 --
• 1989 Yamaha YSR50 --
• 1991 Yamaha YSR50 --

CLICK HERE to check out our other NEW YSR50 parts.

Make sure to check out our other used YSR50 parts.

 

Domestic Shipping

• Orders containing multiple items may ship separately in multiple shipments. They may not arrive at the same time and may take another couple of days for the complete order to arrive.
• Free and Flat Rate Shipping is limited to lower 48 States only.
• We ship Mon-Fri excluding Holidays.
• We use FedEx, UPS, and USPS. Which shipping method is used for your order is at our discretion. If you have a physical address and a PO box please provide both.
• Please make sure the shipping address is correct at checkout. Our shipping process is highly automated and shipping does not have access to ebay messages.
• Once the order is sent to a pull sheet at one of our warehouses we are NOT ABLE to change the address or cancel the order. It will ship to the address provided at checkout.
• If you make an error in the address or wish to cancel an order send an official CANCEL TRANSACTION REQUEST IMMEDIATELY. We do hold order a few minutes to allow for then. Our fulfillment process is automated and we will not see a direct message until it is to late to cancel it.
• Hawaii, Alaska, Puerto Rico and APO addresses must contact us prior to purchasing item for a shipping quote first. Shipping fees to APO, AK, PR and HI will be calculated individually and added to customer invoice prior to paying for the item.
• Make sure you have packages delivered to a secure location. We can not cover packages stolen after delivery.

International Shipping

• International shipments will ship through the ebay Global Shipping Program.
• PirateMX Powersports is not responsible for taxes and duties which may be due on your shipment.
• Please note that all prices are in U.S. Dollars. Any fitment provided is for US Spec models.

Returns Policy

Returns are accepted up to 30 days from purchase date

• Items must be in new condition, no returns are accepted on used or installed items. If the products show any signs of installation, we cannot accept the return.
• Item must be in original undamaged unopened packaging.
• Any and all returned electrical items that are not sealed will be considered USED and not resell-able and not eligible for a full refund.
• Use our shipping packaging to ship back the item, DO NOT tape the label directly to the original manufacturer’s box.

 

Contacting Us for a Return

Items purchased on ebay must be returned using the return process. Send us a message via ebay for help starting a return.

Warranties

All items are new in box unless listed otherwise. Any warranties are from the products manufacturer.

In the unlikely event you need to make a warranty claim, we will assist with the process. Products are limited to the manufacturer's warranty..

To contact us about a warranty related issue..

• Send us a message via ebay..

• WARNING: This product contains chemicals known to the State of California to cause cancer and/or reproductive harm, and birth defects or other reproductive harm.