Engines and Components› Pistons and Piston Rings

YCP

JDM P30 Piston Kit for Honda B-Series

$237.49

SKU: YCP-P30-81.50MM-SET

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

The YCP JDM P30 is a set of pistons designed for Honda B-Series engines. These pistons are made from AC8A Grade casting, which is stronger than OEM. They feature 21mm floating wristpins and come with premium ring sets. Available bore sizes include 81.0mm, 81.5mm, and 82.0mm.
Show original supplier description
Upgrade your all-motor engine build with the YCP JDM P30 Pistons, engineered for superior performance and reliability. These pistons are crafted from strong AC8A Grade material and have undergone T-6 Heat treatment for enhanced durability and heat resistance. The YCP JDM P30 Piston Kit comes complete with four pistons, wrist pins, premium 1.0*1.2*2.8 Gas Nitrided ring sets, and wrist pin clips. They are designed with dual oil holes for superior wristpin lubrication and feature hard-anodized piston tops for added strength. The Teflon skirt coating contributes to increased piston life, better cylinder sealing to reduce blow-by, and reduced friction for potential power gains. These pistons are compatible with both OEM (without wrist pin clips) and aftermarket forged connecting rods (with wrist pin clips). The available bore sizes are 81.0mm, 81.5mm, and 82.0mm, offering flexibility for various build specifications. Approximate compression ratios vary depending on the engine block and head configuration, ranging from 10.5:1 to 12.5:1. Manufactured by Yong Chiang Piston Co., Ltd, a company with over three decades of experience since 1989, these pistons represent a blend of performance, durability, and value.

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

BrandYCP
Part NumberYCP-P30-81.50MM-SET
CategoryEngines and 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