Engines and Components› Engines, Blocks and Components

Outfront Motorsports

EJ257 V3 Closed Deck Long Rod Short Block

$4,675.00

SKU: OUT-SB-V3-LR

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$100 Minimum Order
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Overview

The Outfront Motorsports Closed Deck EJ257 V3 Long Rod Short Block is a high-performance engine assembly designed to withstand extreme boost levels. It utilizes a reinforced closed deck design to manage high cylinder pressures without risking sleeve movement or coolant leakage.
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The Outfront Motorsports Closed Deck EJ257 V3 Long Rod Short Block is engineered for high-horsepower applications, utilizing a V3 closed deck process that reinforces the combustion area with billet material to eliminate the risks associated with traditional sleeved blocks. By retaining the stock sleeves, the design prevents common failures like dropped sleeves and coolant pushing under extreme cylinder pressures. This short block assembly includes seasoned EJ257 case halves, JE FSR pistons, and Outfront Motorsports +2mm longer Tuff connecting rods paired with ARP 2000 bolts. It is further equipped with King performance bearings and a new OEM Subaru 2017+ STI nitride-treated crankshaft. The assembly includes rear covers, a rear seal, and pin plugs, and requires no core exchange. All units are built in-house in a clean-room environment to maintain strict quality control. The process includes boring and honing using torque plates, with all tolerances verified before final assembly. The unit is rated to handle up to 775 BHP in this configuration, though custom builds are available for varying power goals.

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

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Specifications

BrandOutfront Motorsports
Part NumberOUT-SB-V3-LR
CategoryEngines and Components
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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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.

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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.

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