IAG Stage 4 TUFF Closed Deck Short Block - 2015-2021 Subaru STI / 2004-2013 Forester / 2004-2014 Impreza

IAG Stage 4 Tuff EJ25 Subaru Closed Deck Short Block 2015-2021 Subaru STI

IAG Stage 4 Tuff EJ25 Subaru Closed Deck Short Block 2015-2021 Subaru STI

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SPECS:

• Brand new Subaru OEM case halves converted to Closed Deck
• IAG Fire-Lock receiver groove machining
• Bored and honed to 99.75mm
• IAG-Spec JE FSR 99.75mm 2618 Forged Pistons
• .250" / .927" H13 Performance wrist pins, clips
• IAG Spec Tri-Beam +2mm connecting rods
• ARP625+ Rod bolts
• ACL Rod and Main Bearings
• Standard new Subaru Nitride Treated 2017+ STI crankshaft
• Standard FHI Subaru case bolts/main bolts
• Machined to accept 14mm head studs (head studs sold separately)
• Requires IAG Fire-Lock Head Gaskets
• Rated to 1000 HP with supporting modifications

 

NOTES:

• 8.2:1 on B, V, and W cylinder heads (EJ257)
• 8.5:1 on D cylinder heads (EJ255)

 

RATED TO SUSTAIN HIGH LEVELS OF POWER

The IAG Performance Stage 4 Tuff EJ25 Subaru Closed Deck Short Block is a pre-assembled short block assembly performed by one of the leading power innovators in the Subaru motorsports community. This block begins with brand new Subaru 2.5L case halves that are assembled at IAG's facility using their state-of-the-art milling machines. These are machined to accept IAG's closed-deck inserts that transform the deck into a solid deck. The case halves then get machined for IAG's Fire-Lock head gaskets that are loosely derived from diesel technology where a counterbore step is machined around each cylinder bore to allow specialty-sized fire rings to drop into the machined area and head gasket bores.

The Stage 4 Tuff case is then drilled to accept 14mm head studs that are combined with the IAG Fire-Lock head gasket set which greatly reduces the chances of head gasket failure during high-cylinder pressure scenarios. The clock is then deck plate bored and honed to 99.75mm using IAG's in-house Sy=unnen SV-30 which is the most advanced automotive cylinder hone available. The engine is then assembled using the strongest ingredients that can sustain up to 1000 HP with the right supporting modifications, which is ideal for those of you looking to make a large number on the dyno, drag strip, or to endure high-stress conditions with road racing or rally.

 

IMPORTANT DELIVERY NOTE:

Your order is shipping Via Truck Freight which requires you to be available at the time of receipt. There is a possibility the trucking company will try to schedule a delivery time with you.

At the time of delivery, the driver will hand you the delivery receipt also referred to as the bill of lading, you will use this to notate any damages to the shipment. It is important that you fully inspect the shipment from all sides and notate any dents, punctures or rips in the outside packaging on the delivery receipt. Once you've inspected your shipment from the outside, you will need to open it and check the product in its entirety for damages and notate them if any.

If there is no damage sign for the package and enjoy!

In the rare case, you do find that your order arrived with damages, it is important you follow these steps.

- Do not refuse the product
- Document the damages in as much detail as possible on the Bill of Lading
- Take numerous photos from all angles (including packaging)
- Keep the product and contact the shipping company to start the damage claim
- Contact us either by phone or email for the next steps

In the situation where the delivery driver is unable to wait for you to open and inspect your product, simply document "driver was unable to wait for inspection." All damage must be noted on the Bill of Lading before signing and initiating a damage claim. If the damage is not notated before signing for the item it is assumed to be in good condition. This will forfeit the ability for a shipping claim and you will not be eligible for refund or replacement.