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Engines and Components Pistons and Piston Rings

Carrillo

Piston Subaru EJ25 DOHC 4 Cyl Bore (in) 3.937 Bore (mm) 100 Size 0.5mm Stroke 79 (SET OF 4 )

$1,049.00 $885.15 Save $163.85

SKU: C001 1898SET

In Stock
In Stock
Ships by Jun 17
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

High-performance 98" (3.937" bore) big bore replacement pistons for 1999-2006 Harley Davidson 88" Twin Cam engines with 4.0" stroke. Constructed from 2618 forged and heat-treated alloy. Features forced pin oiling, advanced cam and barrel skirt profiles, and flattest ring grooves. Includes a set of two pistons, two complete high-performance ring packs, and two chromoly wristpins & locks. Available in 10.0:1 (+3cc dome), 10.25:1 (+6cc dome), and 10.75:1 (+10cc dome) compression ratios.

Fitment

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Specifications

BrandCarrillo
Part NumberC001 1898SET

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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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