Forged 2618 aluminum construction for high strength and durability
High compression dome (≈10.5 cc) for performance applications
ArmorGlide® skirt coating reduces friction and improves wear resistance
Precision ring grooves and anti‑detonation design
Includes premium piston rings for optimal sealing
Designed for heavy‑duty or high‑horsepower engines
Strutted forging for improved component integrity
Forged pistons set of 4 included
Specifications
Bore diameter: 86.00 mm standard
Compression height: 30.00 mm
Dome volume: ≈10.5 cc
Piston quantity: 4
Piston pin diameter: 22 mm
Piston material: 2618 forged aluminum
Skirt coating: ArmorGlide®
Suitable for Honda K‑Series K20A and K20Z engines
Included Components
4x forged pistons
4x piston rings
4x piston pins
4x circlips/locks
Product Description
The Wiseco K650M86AP forged piston kit is engineered for high‑performance Honda K‑Series engines, specifically the K20A and K20Z 2.0L inline‑4 engines found in the 2002–2006 RSX‑S and 2006–2011 Civic Si models. These pistons are forged from premium 2618 aluminum for superior tensile strength and fatigue resistance under severe duty or high‑horsepower conditions. The ArmorGlide® skirt coating reduces friction and enhances durability, making this set ideal for racing, high compression builds, or performance‑oriented rebuilds.
Each piston features a high‑compression dome design (~10.5 cc) optimized for increased combustion efficiency, precision ring grooves, and anti‑detonation features that contribute to improved power output and engine responsiveness. The complete set includes premium piston rings, wrist pins, and locks, ensuring a direct and reliable upgrade when rebuilding K‑Series engines. These pistons are typically used in sport compact and performance applications where OEM components are exceeded in strength and durability.
*Parts are for USA spec vehicles, please contact us to verify fitment on JDM & international models.
· · · SHIPPING · · ·
Free shipping across the contiguous 48 United States (excludes Hawaii and Alaska). Item(s) ships on the same day or within 1 business day. Delivery time is within 2 to 4 business days excluding next day deliveries. Orders over $750 require signature for delivery.
Canada customers - If eBay does not collect import & duty fees during checkout, the shipping carrier will collect them prior to delivery.
· · · RETURNS · · ·
Your complete shopping satisfaction is our #1 priority. If an item you ordered from us does not meet your expectations, please contact us within 30 days of receiving the item(s). If your order arrives damaged from shipping please contact us and we will provide a prepaid return label to send back for a replacement or refund.
Returned items must be in the original packaging (including plastic wrapped items) and in brand new condition.
Any returns received installed, mounted, used or missing components will be subject to return fee's.
· · · PAYMENTS · · ·
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PayPal, and all major credit cards/debit cards are accepted.
· · · FEEDBACK · · ·
Customer satisfaction is a top priority for us. If you have any issues with your order, please let us know. We will make every effort to resolve any problems and ensure you are satisfied.
· · · CONTACT US · · ·
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