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These turbos offer excellent spool-up characteristics with greater production of power and torque through the upper RPMs over stock.  Will produce ~430RWHP on pump fuel and can produce ~500RWHP on race fuel with proper tuning and other appropriate modifications. These turbos spool up quickly and are capable of more than 100 rwhp over the stock units.

Uses stock compressor and turbine housings which are precision CNC machined to house the larger compressor and turbine wheel. Built with new bearing housings and all new rotating parts. We have also employed a 360-degree thrust bearing assembly to further improve the longevity of these turbochargers. 35#/min compressor. Turbine sections use a 4-bolt downpipe configuration and are direct bolt-on turbos. With the addition of camshafts, intercoolers, tubular manifolds and our tuning experience, 550RWHP is an achievable benchmark.

Z1 offers your choice of .54 or .63 A/R turbine housings.  This choice allows you to decide which characteristics in a turbo you prefer, Faster Spool (.54 A/R) or Peak Power (.63 A/R). If you only daily drive your car and rarely or never plan on using Race Fuel then the .54 housing is for you. If you plan on going to the drag strip and running race fuel consistently then the .63 housing is the way to go.

Kit includes:
  1. Your Choice of .54 or .63 A/R Turbine Housing
  2. Pair of GT525 Turbochargers
  3. Oil Feed Lines
  4. Oil Return Line Gaskets
  5. Exhaust Manifold to Turbo Gaskets
  6. Turbo to Downpipe Gasket
  7. Compressor Inlet Gaskets
  8. Compressor Outlet Gaskets
  9. Oil Feed line Copper Crush Washers
  10. Coolant Feed and Return Line Copper Crush Washers

Installation available here at Z1 Motorsports - Contact Service@z1motorsports.com.

Although not required, for optimal performance we recommend a set of 2.5" Stainless Steel Z1 divorced downpipes which have been designed with a larger turbine discharge pipe to correlate with the larger sized turbine wheels fit into stock 4 bolt turbine housings.  These 4 bolt downpipes are available as an option below at a discounted price as well as the option for AMS 3.0" Expansion Downpipes. 

$200 core charge per turbo applies.

$50 each for missing or damaged wastegate actuator.
$25 removal fee for each broken off bolt or stud in the turbine housings of returned cores 

View our Core Return Policy and Form - *Form MUST be included with core*

Available Options:

Core Charge:

Turbine Housing:

Downpipes:

$1,895.00 $1,795.00

What our customers say...


Running these tubs and really impressed,easy fitment and capable of serious power with other mods,For the money you cant get ...

Rated by Verified Customer Purchase Read More

I think I installed these back in 2011 or 2012, either way they turned out to be a great upgrade. ...

Rated by Verified Customer Purchase Read More