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Engines and Components› Pistons and Piston Rings

Namura

TOP END KIT 99.97/STD 11:1 YAM

$198.95 $146.29 Save $52.66

SKU: NA-40010K

Out of Stock
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
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Advanced — 4+ hours

Overview

The Namura Top End Repair Kit NA-40010K is a comprehensive package designed for a complete top-end engine rebuild. This kit includes pistons, a full gasket set, and wrist-pin bearings where applicable, ensuring all necessary components are provided for restoration. It is built to precise standards to help bring your engine back to strong and smooth performance. The kit features a standard bore of 99.97mm and a compression ratio of 9.20 to 1.

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 NumberNA-40010K
CategoryPiston kits & Components
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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.

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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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