AJW Performance Motor Builds; Stage 1 and Beyond

AJW Performance has been building performance motors for Subaru Impreza WRX’s, Subaru Forester XTs, Subaru Legacy’s, and even some more interesting builds like the ones for Factory Five 818-S and 818-R for over 5 years now. We have the experience and tools necessary to build you a top notch motor! While we offer rebuild services for existing motors, we also offer packages for new ones as well.


Perhaps our most popular motor build is the AJW Performance Stage 1 2.5L Subaru Shortblock. This block begins it’s life as a brand new Forged EJ257 Shortblock with all the bits and pieces to compliment it, including the Crank, connecting rods, high performance piston rings, and Manley or CP Pistons depending on the customers choice. We also offer tons of different options to make your shortblock even better, like adding a brand new set of ARP Head Studs, Gates Timing Belt Kit, or even a Killer B Oil Pickup and High Performance Oil Pan to the motor. Many of these options are available to help a customer create the bulletproof motor that they need to make the power that they desire.


The Stage 1 block is good for customers that are looking for under 400WHP. While the OEM shortblock is a great motor, but it can quickly be ruined by deterioration and detonation. It is also good to remove the brittle cast hyper-eutectic pistons and replace them with a forged equivalent. If a customer wants to make REALLY big power, we recommend calling so that we can schedule a consultation appointment where we can sit down, or discuss via telephone the power options and goals that they’re looking to achieve. This helps us get the information we need to make a good choice for your vehicle!


The customer who purchased this Short block decided to add ARP Headstuds and choose Manley pistons. We are simply waiting for the heads to return from the machine shop and then this customers build will really come together. His original motor was destroyed, however he loved his Subaru Outback XT and we were trusted to bring his car back to life. We will not let him down!

Do you need Performance Parts or a full motor build? Give us a call at 603-715-9076 and we will be happy to assist you! You can also e-mail us at info@ajwperformanceproducts.com!


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