Wiseco leads the performance aftermarket by producing the highest quality forged pistons for Dirt Bikes, ATVs, Snowmobiles, Marine Vehicles, and Motorcycles right here in the USA. Wiseco is unique because we forge all of our pistons in-house, and produce all of our forge toolings right here in the USA. This allows us to control all aspects of our manufacturing process from raw bar to skirt coating finished parts. In addition, in-house dyno testing gives Wiseco the ability to develop state-of-the-art technology such as new shapes, coatings, and components, and lead the industry through rigorous R&D. Linking all segments of Wiseco\'s organization through design, testing, manufacturing, and distribution allows us to fulfill market needs with minimum lead-times.
Whenever possible we use picture of the actual part number. Some items do use stock photos provided by the manufacturer.
Wiseco leads the performance aftermarket by producing the highest quality forged pistons for Dirt Bikes, ATVs, Snowmobiles, Marine Vehicles, and Motorcycles right here in the USA. Wiseco is unique because we forge all of our pistons in-house, and produce all of our forge toolings right here in the USA. This allows us to control all aspects of our manufacturing process from raw bar to skirt coating finished parts. In addition, in-house dyno testing gives Wiseco the ability to develop state-of-the-art technology such as new shapes, coatings, and components, and lead the industry through rigorous R&D. Linking all segments of Wiseco\'s organization through design, testing, manufacturing, and distribution allows us to fulfill market needs with minimum lead-times.
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 High Performance Piston Kit 86.50mm 1.50OB, that will not have you questioning the quality or care that was put in to making them.
Image is a stock image, the product that you will receive is made to fit your vehicle and may appear different than the picture.
- Forged from high-silicon alloy for maximum strength and dependability
- Wiseco offers a complete range of popular piston models and years for both trail and racing applications
- All Wiseco pistons are priced with rings and circlips
- Piston Over Bore Amount: 1.5 mm
- Material: Forged Aluminum
- Oem Piston Bore Size: 86.5 mm
- 1978 Yamaha YZ400 --
- 1977 Yamaha YZ400 --
- 1976 Yamaha YZ400 --
CLICK HERE to check out our other NEW YZ400 parts.
Make sure to check out our other used YZ400 parts.
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 messages.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 the CANCEL TRANSACTION REQUEST must be received before the order is sent to the warehouse and added to a pull sheet.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. We would if we could but they why our automated shipping works it is not possible to change or shop the order from shipping.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 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 PolicyReturns 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 ReturnItems purchased on must be returned using the return process. Send us a message via for help starting a return.
WarrantiesAll 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..
- 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.
