UPDATE: A limited supply of the original best-selling Lextreme 1UZFE EGR Delete Kit remains. If you own a 1UZ from 1990-1997, you really need to get this kit! Email me at [email protected] for help with ordering or questions. This will probably be the last kits I have made.

All other parts are SOLD OUT and won't return, including the LS400 and SC400 turbo kit, rebuild kits, supercharger and performace torque converter. We're not an auto parts supplier and I can't respond to inquries for random Lexus and Toyota auto parts.

LEXTREME LEXUS FORUMS HERE! - Post Questions For Quick Answers!

Toyota-Lexus Custom Forged Pistons


As the 1UZFE engine aged, most piston rings start to loose its compression.  I would recommend any SC400 or LS400 have more than 150,000 miles and plan to have some type of forced induction greater than 7-9 psi.

After market forged pistons are highly desirable.  Since I am getting Custom Ross forged pistons, I can order extra set for your fresh build.  Ross piston has been widely respected in the racing arena.

As your rings aged, your cylinder walls also being affected.  Therefore, boring .020″ is require for the new forged Ross pistons.  The price has not been determine, but yet it should be affordable for the level of power out put.  A full specification sheet will be provided along with the pistons.

We are very luck to have special relationship with Ross Pistons to have 1-3UZFE pistons made.  The pistons are forged with strong pins along with performance rings.  There has been a myth that Lexus put in forged pistons in their 1UZFE. 

I have a 1990 LS400 and the pistons were not forged.  The stock pistons can handle some punishment, but will give up after 12-13 psi.  We had Ross to custom made us a set of forged pistons with forced induction in mind. 

The weakness link in our Lexus-Toyota Motor are the pistons.  I have seen lots of Lexus-Toyota V8 motor blown because of its pistons.  Here is your chance to do it right at the first time.  We are offering custom made pistons for any compression ratio or oversize bore along with either Natural Aspirated (N/A) or Forced Induction (FI).

We have many years of experience ordering proper pistons.  From the early 1uzfe models to the latest VVTi 3uzfe.  Just tell us the followings:
 · Compression ratio
 · Over Bore Size
 · Horse Power Level
· Type of Rods: Stock or Lextreme Lightning Rods

If you plan to run turbo in your Lexus or Toyota V8, these are a must if you plan to more then 13 psi.  This is the first forged pistons available to the public.  So jump and get your internal build.


  • Ross will make our pistons from 2618T61
    forged aluminum.


  • Ross will be using special custom rings for
    high boost application. 

  • Currently Ross has the following, but they
    will make us special rings stronger when they have now.


  • Ross 4340 pins are the ultimate pins for

  • They are made from billet bar stock 4340
    chrome moly, which has a minimum tensile strength of 240,000
    psi. and a 13% greater ductility than standard pins.

  • The hard chrome finish provides excellent

  • 4340 pins are recommended for sprint cars,
    blown engines, etc.

The one set price for those pistons will be
$1100.00 (Pistons, Rings and Pins) plus shipping.  Please contact me if you
are interested and allow 6-7 weeks for delivery.  Out of
the country shipping extra.  Please let know the
compression rate and overbore size.

Here are my
·  N/A Application: .020″ overbore and stock
compression ratio
·  Supercharger: .015″ overbore with stock
·  Turbo (Mild): .015″ overbore with 9.5:1
compression ratio
·  Turbo (Wild): .010″ overbore with 8.5:1
compression ratio






Tundra and all other Lexus-Toyota 2UZFE



Do you have any questions? If so, please head over to the forums to get a quick answer or share your experience!

Cash App (user: $lextremeparts).
This is a freelance site with no support by huge companies.  I have been doing most of the R&D and technical write-ups by myself with my personal money and literally thousands of hours of my time.  I have taken extra steps to demonstrate in details how things are done.  Currently I am one of the few people doing Lexus V8 research and performance enhancement.  This effort comes from my personal love for this wonderful engine.  Most of the modifications are from trial and error. There's no cookbook for 1UZFE mods and its unknown territory for much of supercharger performance.  The parts, labor, web development and site hosting are 100% paid from my personal hobby money.  If you feel my efforts help you in any form, please do not hesitate to donate any amount of money to support this site. You have no idea how much I and the entire Lexus and Toyota community appreciate it!

5 thoughts on “Toyota-Lexus Custom Forged Pistons”

  1. I’m looking for a set of stock bore 3uz-fe for my 2006 Lexus GS 430 I’d like to know how much they would be and how long of a wait appreciate your time thank you


Leave a Comment