Sale

Wiseco

Forged Piston Kit, 81.25mm Bore, +2.4cc Volume

$831.99 $185.79 Save $646.20

SKU: K542M8125AP_2

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

This specific kit features an 81.25mm bore and a +2.4cc piston head volume, designed for high-performance applications. Wiseco pistons are crafted to provide superior strength and tighter tolerances, ensuring reliable operation within your engine. These pistons are part of Wiseco's Sport Compact line, which emphasizes robust construction and precision engineering. The kit includes the necessary rings to complement the pistons, offering a complete solution for engine builders seeking to upgrade or rebuild their powerplant. Wiseco generally designs its pistons for demanding use, aiming to maximize an engine's potential. While the product is listed for specific B-Series Honda engines, some applications may require professional modifications to ensure a perfect fit and optimal function.

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

BrandWiseco
Part NumberK542M8125AP_2
CategoryEngines and Components

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

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.

View Full Shipping Policy