Sale

Engines and Components› Pistons and Piston Rings

Namura

TOP END KIT FLAT TOP 39/STD 11:1 HON

$59.95 $44.09 Save $15.86

SKU: NX-10051K

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

Advanced — 4+ hours

Overview

The Namura NX-10051K is a top-end repair kit designed to restore engine performance. This kit includes a piston, rings, wrist pin, clips, top end bearing, and a gasket set. It features MOS2 (Teflon/Molybdenum) coated skirts for increased heat transfer and reduced friction, helping to prevent cold seizures.

The piston heads are machined smooth to reflect combustion heat and minimize carbon buildup, potentially increasing horsepower and fuel economy. The anodized domes enhance heat resistance and durability, making the pistons 75% stronger. Constructed with a hypereutectic casting process, these pistons offer higher silicon content for reduced expansion rates and improved wear resistance, along with the ability to withstand higher 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-10051K
CategoryPiston kits & Components

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy