Notices
RX - 2nd Gen (2004-2009) Discussion topics related to the 2004 -2009 RX330, RX350 and RX400H models

Shift Improver Kit

Thread Tools
 
Search this Thread
 
Old Mar 25, 2023 | 08:50 AM
  #1  
HaryGahtoe's Avatar
HaryGahtoe
Thread Starter
Pit Crew
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2007
Posts: 219
Likes: 24
From: WA
Default Shift Improver Kit

Previous owner was meticulous about maintenance but with 180 k mi. on the clock I think the soft shifts could be because of the known internal wear issues of the transmission
Looking to see what type of realistic results gained and if there were any related install issues anyone has worked on
Thanks
https://www.sonnax.com/parts/3048-zip-kit
Reply
Old Mar 25, 2023 | 11:01 AM
  #2  
MattRX's Avatar
MattRX
Pole Position
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Jan 2021
Posts: 2,229
Likes: 1,118
From: Ontario
Default

Here's a great post about it. This whole thread by Teksmrt is a feat in itself. He has had the kit for 3+ years and is pleased with it. Lots of good info here about the U151 transmission, 2GR-FE engine and more

https://www.rav4world.com/threads/te....264721/page-5
Reply
Old Mar 25, 2023 | 12:42 PM
  #3  
HaryGahtoe's Avatar
HaryGahtoe
Thread Starter
Pit Crew
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2007
Posts: 219
Likes: 24
From: WA
Default

Thanks for the info MattRX. I followed up the thread where OP talks about and physically shows the arrangement he used to stack washers in the accumulators to firm up the shifts to the best as well as TB, wheel & tire and suspension mods.
If we lived closer I'd buy you and him a drink.
Thanks again for sharing
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
fastegg
LS - 1st and 2nd Gen (1990-2000)
9
Apr 12, 2016 03:22 PM
aj848
LS - 1st and 2nd Gen (1990-2000)
2
Jul 14, 2014 04:57 AM
mitmaks
ES - 1st to 6th Gen (1990-2018)
2
Jan 20, 2014 10:13 PM
Shfordman
SC - 1st Gen (1992-2000)
7
Jan 24, 2012 12:00 AM
CinFulxgs
Performance
19
Dec 1, 2004 08:28 PM




All times are GMT -7. The time now is 10:00 AM.

story-0
Toyota and Lexus Join Mille Miglia For The First Time

Slideshow: A five-car lineup spanning more than five decades of Toyota performance and engineering will tackle one of Italy's most celebrated automotive routes.

By Verdad Gallardo | 2026-06-15 16:53:16


VIEW MORE
story-1
Lexus NX 350h: A Fuel-Sipping Secret Hot Hatch???

Slideshow: a quick review of the 2026 Lexus NX 350h F Sport Handling

By Michael S. Palmer | 2026-06-18 14:36:21


VIEW MORE
story-2
5 Best & 5 Worst Lexus Daily Drivers

Slideshow: The 5 best and 5 worst Lexus daily drivers

By Joe Kucinski | 2026-06-15 11:14:58


VIEW MORE
story-3
Top 5 Hottest Lexus & Toyotas in 2026 (Hardest To Buy)

These five Lexus and Toyota models are the most sought-after on the market right now.

By Brett Foote | 2026-06-15 10:47:52


VIEW MORE
story-4
2026 Lexus IS 350 F Sport Review: The Last of Its Kind Still Rocks

Slideshow: the 2026 IS 350 isn't all that new, and that's why we love it!

By Michael S. Palmer | 2026-06-04 14:35:23


VIEW MORE
story-5
Top 10 Most Confusing Things Lexus Has Ever Done!

Slideshow: 10 most confusing things Lexus has ever done.

By Joe Kucinski | 2026-06-04 09:40:55


VIEW MORE
story-6
2026 Lexus ES Review: Lexus Re-Embraces Founding Principles

Slideshow: Our First-Drive Review of the 2026 Lexus ES!

By Michael S. Palmer | 2026-05-29 20:30:16


VIEW MORE
story-7
10 Lexus Bargains That are Cheaper Than a New Toyota RAV4

Slideshow: 10 Lexus bargain that are cheaper than a new Toyota.

By Joe Kucinski | 2026-05-20 10:28:20


VIEW MORE
story-8
8 Weirdest Things Lexus Has Ever Built

Slideshow: From hoverboards to luxury yachts, these are the strangest projects Lexus has ever attached its badge to.

By Verdad Gallardo | 2026-05-16 11:34:36


VIEW MORE
story-9
10 Lexus Designs That Have Aged Like Fine Wine

Slideshow: Some luxury cars chase trends, but these Lexus models look better now than they did when they first rolled into showrooms.

By Verdad Gallardo | 2026-05-06 17:58:29


VIEW MORE