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Performance Auto Parts & Car Accessories | Unbeatable Prices Your One Stop Shop For Performance Auto Parts

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MAPerformance EJ25 Stage 2 Shortblock Assembly (Subaru WRX/STI) New OEM Block Halves + Crankshaft - Modern Automotive Performance
 - 1


MAPerformance

MAPerformance EJ25 Stage 2 Shortblock Assembly

PART# MAP SUB-EJ25MSS-S2
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( We'll refund the difference! )

Give us a call to get the best prices and parts for your build. Or, just call us with a cool racing story...either way we're here.

Email - sales@maperformance.com

Phone 1-888-627-3736



$ 4,836.99   $ 5,374.43
Instant Savings of 10% ($ 537.44)

this item typically ships in 4-6 weeks! Ships by , when ordered within hrs and mins

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MAP Loyalty: Earn $ 96.74 Toward Next Purchase!

Modern Automotive Performance won't settle for anything less than the best when it comes to our engine building program and our reputation. Only the best quality components along with specialized machining and assembly techniques for each individual platform are used to ensure the best possible performance and longevity. When it comes to Subaru engines, MAP makes no exceptions.

 

Included Services

  • Crankshafts are never cut / turned and receive a micro-polish treatment and balancing specifically for high performance applications.
  • The First step in the machining process is resurfacing. We pride ourselves on the surface finish (RA) we achieve as it is of the utmost importance in regards to head gasket sealing.
  • Next, we bore the sleeves square to the deck surface. EJ25 specific torque plate is used to ensure roundness. The overbore is followed with a four step plateau honing process that provides the absolute best cylinder wall finish and ultimate ring seating.

Included Components

  • ACL Race series rod and main bearings (King XP Series Bearings are also used when applicable)
  • Forged H-Beam Connecting Rods
  • Forged Pistons

Options

  • Crankshaft: We use standard size OEM crankshafts most frequently as we have not had a crankshaft failure to date. However, we realize that there are weight advantages and stroke options available with some aftermarket crankshafts so we will happily build your shortblock accordingly!
  • Pistons: We use Manley as our piston of choice. If you would like to go with a different brand of pistons please give us a call.
  • Rods: K1 Tech H-Beams

Shipping

Please note that this item does not qualify for free shipping. Shipping methods and charges will be determined when the service is completed and can range from $100-$200.

Why Choose a MAP-built Engine?

We won't settle for anything less than the best when it comes to our engine builds. We utilize quality components along with specialized machining and assembly techniques for each individual platform to ensure the best possible performance. If we see a gap in regards to acceptable product offerings on the market we often times develop our own like the Ultimate Duty Connecting Rods. We thoroughly inspect, blueprint, clean and assemble our engines in a clean room and most of the machine work is performed in house to satisfy our stringent requirements. We have had great success in building countless motors for every imaginable application from the weekend warrior to the all out race car.

Please note that this product is built to order. Based on fluctuations in demand build times may vary throughout the year. Please contact an MAP sales representative for current estimations.

Ready to start your new engine? Check out our Engine Break In Procedure for the proper way to break-in a fresh engine!

 

 

Modern Automotive Performance won't settle for anything less than the best when it comes to our engine building program and our reputation. Only the best quality components along with specialized machining and assembly techniques for each individual platform are used to ensure the best possible performance and longevity. When it comes to Subaru engines, MAP makes no exceptions.

 

Included Services

  • Crankshafts are never cut / turned and receive a micro-polish treatment and balancing specifically for high performance applications.
  • The First step in the machining process is resurfacing. We pride ourselves on the surface finish (RA) we achieve as it is of the utmost importance in regards to head gasket sealing.
  • Next, we bore the sleeves square to the deck surface. EJ25 specific torque plate is used to ensure roundness. The overbore is followed with a four step plateau honing process that provides the absolute best cylinder wall finish and ultimate ring seating.

Included Components

  • ACL Race series rod and main bearings (King XP Series Bearings are also used when applicable)
  • Forged H-Beam Connecting Rods
  • Forged Pistons

Options

  • Crankshaft: We use standard size OEM crankshafts most frequently as we have not had a crankshaft failure to date. However, we realize that there are weight advantages and stroke options available with some aftermarket crankshafts so we will happily build your shortblock accordingly!
  • Pistons: We use Manley as our piston of choice. If you would like to go with a different brand of pistons please give us a call.
  • Rods: K1 Tech H-Beams

Shipping

Please note that this item does not qualify for free shipping. Shipping methods and charges will be determined when the service is completed and can range from $100-$200.

Why Choose a MAP-built Engine?

We won't settle for anything less than the best when it comes to our engine builds. We utilize quality components along with specialized machining and assembly techniques for each individual platform to ensure the best possible performance. If we see a gap in regards to acceptable product offerings on the market we often times develop our own like the Ultimate Duty Connecting Rods. We thoroughly inspect, blueprint, clean and assemble our engines in a clean room and most of the machine work is performed in house to satisfy our stringent requirements. We have had great success in building countless motors for every imaginable application from the weekend warrior to the all out race car.

Please note that this product is built to order. Based on fluctuations in demand build times may vary throughout the year. Please contact an MAP sales representative for current estimations.

Ready to start your new engine? Check out our Engine Break In Procedure for the proper way to break-in a fresh engine!

 

 

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MAP Limited Lifetime Warranty

1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

For warranty evaluation please create a support ticket via this form Click Here For Customer Service.