Mazworx

Specifications:- Made from 1 1/4" Sch 10 304SS- CNC cut- Outlet sized for a T4 divided flangeCollectors come tack welded so you can disassemble and modify them easily. Made in the USA.

This is the most common machine work done when upgrading your internals.

4 Ply Silicone Straight Hose, Gloss Black w/ Mazworx Logo

4 Ply Silicone Reducer, Gloss Black w/ Mazworx Logo

Made from 304 Stainless steel and Tial MVR wastegate flange.

Made from stainless steel mandrel bend tubing.  Includes 2 Vband assemblies, 2 O2 sensor bungs (one for OEM sensor).  Works perfect with our Mazworx SS Series Top Mount manifold.  May work with other top mount manifolds with some modification.  Full upper and lower downpipes.  3" 2 bolt exhaust flange at the end.

Priced per valve.The basic valve job consists of recutting the 45 degree in the valve seat and refacing the valve.  This is commonly done when reusing OEM valves.Check Additional Information page for explanation of options.

Our race proven 90mm SR20 headgasket. This is a full grommet type head gasket that provides superior head to block sealing. Using a moribdenum bonding prevents scrubbing during heat expansion. NBR nitrile pre-production coating allows better oil/water sealing on a rough surface. We have tested this gasket with over 60psi of boost making over 1300whp with no issues. Pair this up with our custom step decking on the block for bulletproof sealing.1.5mm Thick

This plate allows you to remove the OEM water pump in order to run an Electric Water Pump. Fits all SRs except the GTi-R block.

This coller is needed when using a standard oil coller (1.2" 30.5mm length) and a VE oil pump.  It will go between the timing chain sprocket and oil coller to space it out to engage the oil pump fully.  Machining the damper the thickness of the spacer is required.

Specifications: - Made T6061 billet aluminum - CNC machined - Fuel injector holes located to factory size and angle - O-rings included

This package offers a complete performance engine build from Mazworx, using the SR20DET platform, but still at an affordable entry level. Final displacement is 2.2L and this package is rated up to 600hp.We start the build reinforcing the block with the installation of Darton sleeves. Then we complete block preparation, constantly taking measurements to ensure the correct machining process is used.As for the cylinder head, we start with a Stage I Port and Polish, installation of new guides,...

This package offers a complete performance engine build from Mazworx, using the SR20 platform.  Final displacement is 2.3L and this package is rated for over 900hp and the constant abuse on drift engines.We start the build reinforcing the block with the installation of Darton sleeves. Then we complete block preparation, constantly taking measurements to ensure the correct machining process is used.As for the cylinder head, we start with a Mazworx Stage 3 CNC Porting, installation of new...

Our Stage 1 Short Block is ideal for your WRX, STi or later model Legacy GT. Your new short block is built from a brand new case from Subaru to ensure the highest of quality. We rate our Stage 1 Short Block up to about 500hp. Each block is cleaned, inspected, machined and built, IN-HOUSE. If you're suffering from a lost ringland or bearing failure, this is an excellent solution for you. The Mazworx Stage 1 EJ257 is built with the following components:-NEW OEM EJ257 Block-NEW OEM...

The Mazworx Stage 2 Sti Shortblock is designed to help maximize the power of your Rotated Turbo Kit. If you're pushing a Large Bolt On to a GTX35R, this is a great block for you. We rate this at roughly 650hp thanks to the Manley H Tuff Connecting Rods. These sturdier rods will take more use and abuse than the typical H-Beam and we add a few other, proprietary tweaks to help you enjoy your 600hp! The Mazworx Stage 2 EJ257 is built with the following components:- NEW OEM EJ257 Block- NEW OEM...

Our Subaru Stage 3 Shortblock is for those that want to push the stock sleeves to their limit. We utilize many of the same components as the lower blocks but build with the Carrillo Pro-SA Rods with the WMC bolts. These are some of the most tried and tested rods in the industry and offer superior finish quality that nets real peace of mind. While the components used are capable of handling far more, we really insist on capping this block at 500-550hp as the cylinder walls will be your weak...

Our Built STi Stage 4 shortblock is ideal for anyone looking to really push their rotated turbo kit. This built sti block is built, in house and designed to help handle upwards of 650hp. We use the lighter, Manley H Tuff connecting rods in able to hold up to the added force of higher boost. Our Darton Sleeved STi block is the base of the beast and our proprietary sleeving process allows for the peace of mind that you want in your build. The Mazworx Stage 4 EJ257 is built with the following...

Mazworx has been building motors for race teams all over the world for over a decade. Our unique experience allows us to offer a race motor that is truly designed and engineered to withstand the rigorous stresses that a motor will endure in competition. Our Podium Series block offers several unique modifications that help remedy a short coming of a standard motor in a RACE application. New OEM Block Halves New Forged OEM Crankshaft (Billet Stroker Options Available) Custom Pistons with X Brace...