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Engines and Components› Engines, Blocks and Components

Outfront Motorsports

Stage 1 RA Shortblock

Name: Stage 1 RA Shortblock
Brand: Outfront Motorsports
SKU: OUT-SB-S1

$3,449.00

SKU: OUT-SB-S1

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Professional / shop required

Overview

The Outfront Motorsports Stage 1 RA shortblock is designed to offer increased protection against ring land failure, particularly for lightly modified vehicles. This engine block assembly includes a custom Outfront Motorsports spec EJ257 CP piston set with a 21cc dish, a new OEM STI black nitrite 2017+ crankshaft, and new OEM STI connecting rods. It also comes with new OEM rod and main bearings and new OEM case bolts, all housed within a new OEM case. The package is completed with rear covers, a rear seal, and pin plugs.

Show original supplier description

The Outfront Motorsports Stage 1 RA shortblock is engineered to provide enhanced durability and protection against ring land failure, making it an ideal choice for lightly modified vehicles. This assembly is built using a combination of new OEM STI components and custom-spec parts from Outfront Motorsports. Key components of this shortblock include a custom Outfront Motorsports spec EJ257 CP piston set, each with a 21cc dish. It features a new OEM STI black nitrite 2017+ crankshaft for robust performance and reliability, paired with new OEM STI connecting rods. The assembly is completed with new OEM rod and main bearings and new OEM case bolts, all enclosed within a brand new OEM case. Included with the shortblock are essential components such as rear covers, a rear seal, and pin plugs, ensuring a more complete build process. This shortblock is rated to handle up to 475 BHP, offering a significant upgrade for performance-oriented applications. It is part of Outfront Motorsports' EJ Shortblocks and EJ25 Shortblocks collections.

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

Brand	Outfront Motorsports
Part Number	OUT-SB-S1
Category	Engines and Components

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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.

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