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Engines and Components› Pistons and Piston Rings

Namura

TOP END KIT 87.89/STD 11:1 POL

Name: TOP END KIT 87.89/STD 11:1 POL
Brand: Namura
SKU: NA-50026K

$164.95 $121.29 Save $43.66

SKU: NA-50026K

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Overview

The Namura NA-50026K Top End Kit is a standard-bore replacement kit for select Polaris ATV and utility vehicles. This 87.89 mm piston kit features an 11:1 compression ratio and includes the piston, piston rings, wrist pin, retaining clips, top-end bearing, and gasket kit for a complete upper-engine refresh. The piston is constructed from hypereutectic aluminum for durability, with a MOS2 coated skirt to reduce friction and a machined smooth head to resist carbon buildup.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

Brand	Namura
Part Number	NA-50026K
Category	Piston kits & Components

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

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