Brand new high performance HPR dual ring piston kits, HPR top end gasket set and newly re-plated 82mm STD bore Ski-Doo 800 SDI cylinder for 2003-2004 models.

A $100.00 core included in the price! Upon receipt of your old Ski-Doo 800 SDI cylinder of the same casting number you'll be refunded based on our ability to repair and re-plate your used cylinder core.

Cylinder Casting #: 923813.

OEM #: 420923813.

About HPR Pistons
Precision engineered HPR high-performance pistons are the highest quality cast pistons currently available on the market.

Featuring a specially formulated wear-proof WST piston coating (the same coating used by Yamaha on current year models) HPR pistons carry more oil more efficiently, ensuring that your motor runs smoother and stays cool longer under pressure. Included are custom designed piston rings by RIK, the manufacturer of nearly all OEM piston rings the world over.

Don't trust your machine to just any aftermarket piston--you deserve the ground-breaking quality and affordable price point that only HPR performance pistons can deliver.

Effects of our HPR Piston Coating:
  • -Prevention of low-temperature brittleness
  • -Prevention of various form of corrosion
  • -Improved Sliding Performance
  • -Increased Surface Hardness
  • -Increased Fatigue Strength
  • -Increased Impact Resistance
  • -Increased Adhesion of Films
Fits the Following Machines

Core Refund:
  • A core charge has been included in price. That core charge will be refunded automatically back onto your original method of payment upon receipt of your core cylinder.
  • Please keep in mind that your core refund can vary depending on the condition of your core cylinders.
  • Broken skirts, cracks into the water jacket, ports, or cylinder wall, & O-ring groove damage are some of the reasons that you would not receive a full refund.
  • Refunds can be significantly  less than the total core refund.
  • Cores that are returned without the core return paper are subject to much longer processing times, & are sometimes unable to be processed at all.
  • If you have concerns about the condition of your cylinders, please message us with pictures. Feel free to call with any questions!
Restocking Fee:
In the event that you order the wrong part for your machine and it ships, or if you are making a return, there is a %15 restocking fee to account for inconvenience and labor. The item must be un-used and in original packaging/condition. You will be responsible for paying your own return shipping cost as well as the cost of shipping out another part (if you are making an exchange). If your return or exchange is due to an error on our part, we cover those costs.

Expedited shipping options are available at check out

Message us if you have any questions!

***Please double check fitment!! We are not responsible for incorrectly placed orders***