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Engines and Components› Pistons and Piston Rings

Namura

PISTON KIT 84.97/STD HON

$96.95 $89.99 Save $6.96

SKU: NA-10040

In Stock
In Stock
Ships by Nov 15
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Namura Technologies Piston Kit is a direct replacement for OEM pistons, designed for the Honda TRX400FA Fourtrax Rancher AT and TRX400FGA Fourtrax Rancher AT Gpscape from 2004-2007. This kit includes the piston, OEM-quality rings, wrist pins, and clips. It features a hypereutectic aluminum construction with a machined smooth head for reflecting combustion heat and hard anodizing for increased durability. The piston's bore size is 85.470mm, and it utilizes a floating wrist pin style.

Namura piston kits are engineered for improved performance and increased power without a significantly higher price. They offer enhanced wear resistance and can withstand higher cylinder temperatures due to their high silicon content.
Show original supplier description
Will not accept OEM rings and rings will not work on OEM piston

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.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandNamura
Part NumberNA-10040
CategoryPiston kits & Components

Videos

Namura piston kit review

Namura piston kit review
NAMURA TECHNOLOGIES PISTONS AND GASKETS

NAMURA TECHNOLOGIES PISTONS AND GASKETS
XR200 gets a Namura piston

XR200 gets a Namura piston

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Returns & Fitment

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

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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