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Engines and Components› Pistons and Piston Rings

Namura

TOP END KIT 53.94/STD 11:1 HON

$99.95 $73.50 Save $26.45

SKU: NX-10000K1

Out of Stock
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Namura Top End Repair Kit is a comprehensive engine rebuild component for Honda CR125R motorcycles.

The kit features a piston with MOS2 (Teflon/Molybdenum) coated skirts, which provides a durable bond that enhances heat transfer, reduces friction, and helps prevent cold seizures. The piston heads are machined smooth to reflect combustion heat and minimize carbon buildup, a feature that may also contribute to increased horsepower and fuel economy. Additionally, the anodized domes increase heat resistance and durability, making the pistons 75% stronger than non-anodized versions. The kit also utilizes a hypereutectic casting process for higher silicon content, ensuring reduced expansion rates and improved wear resistance under high cylinder temperatures.

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

Don’t gamble
on fit.

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 NumberNX-10000K1
CategoryPiston kits & Components

About MOTORMIA

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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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