Wiseco Acura K20 K24 FLAT TOP 1.181X86.5MM Piston Shelf Stock Kit

SKU: WISK631M865

Pistons

WIS Piston Sets - 4 Cyl

Wiseco

Wiseco Acura K20 K24 FLAT TOP 1.181X86.5MM Piston Shelf Stock Kit

SKU: WISK631M865

Pistons

WIS Piston Sets - 4 Cyl

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

Professional Series forged racing pistons from Wiseco are no-expense-spared pistons designed for the serious racers and builders. Packed full of custom-level performance and durability features and provided with premium rings, Professional Series pistons are designed and built for use in heavy to severe duty race builds. Remove your limits with Wiseco's Professional Series.

Application Summary

Honda K20A/Z

Part Type

Engine Piston Set

Data: v4.2 - Upd: 2026-09-30 17:34:35

Features

ArmorGlide Skirt Coating: seizure resistant, friction reduction, and quieter operation
Designed and built to withstand heavy to severe duty performance applications
Engineered, forged, and machined in the USA from 2618 aluminum for improved tensile strength
Forced pin oiling
Fully machined crown features
Precision ring grooves, anti-detonation groove, and additional ring seal improving features

Specifications

Product Attributes - UPC: 00193564077424
Product Attributes - Brand: Wiseco
Product Attributes - Notes: 9:8 Comp. Ratio
Product Attributes - Gapless: No
Product Attributes - File Fit: No
Product Attributes - Quantity: Sold as a set of 4.
Product Attributes - Bore (mm): 86.500mm
Product Attributes - Part Type: Pistons
Product Attributes - Bore (in.): 3.405 in.
Product Attributes - Piston Style: Dish, with four valve reliefs
Product Attributes - Product Line: Wiseco Sport Compact Pistons
Product Attributes - Piston Material: Forged aluminum
Product Attributes - Wrist Pin Style: Press-fit or floating
Product Attributes - Pin Diameter (in.): 0.866 in.
Product Attributes - Wrist Pin Included: Yes
Product Attributes - Piston Ring Thickness: 1.00mm x 1.20mm x 2.80mm
Product Attributes - Piston Rings Included: No
Product Attributes - Piston Head Volume (cc): +3.50cc
Product Attributes - Compression Height (in.): 1.181 in.
Product Attributes - Manufacturer's Part Number: K631M865
Product Attributes - Wrist Pin Retainers Included: Yes

Reference Information

Brand Name/s	Wiseco
StreetFX SKU	wisK631M865
SFX Item ID	4063093
Supplier Item Code	4063093
Manufacturer SKU	K631M865
Manufacturer UPC	193564077424
Alternative References	K20, K24, 1.181X86.5MM