SKU: 90433243691

Acuity Instruments 4-Way Adjustable Performance Shifter for the RSX, K-Swaps, and More

Sale price$184.47 Regular price$204.97
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Description

Acuity Instruments 4-Way Adjustable Performance Shifter for the RSX, K-Swaps, and MoreFitment: 2002 2006 Acura RSX RSX S all trims and models (with mt) 2002 2006 Honda Integra all trims and models (with mt) 2001 2005 Honda Civic Coupe (EM) and Sedan (ES) (with mt) K Swaps using an RSX S transmission or an RSX S gear selector in another K series transmission (requires adapter plate to affix shifter to chassis) Features: Gear throw can be adjusted as much as 55% shorter than stock, and gate spacing can be adjusted as much as 41% narrower

Fitment:
  • 2002-2006 Acura RSX/RSX-S all trims and models (with mt)
  • 2002-2006 Honda Integra all trims and models (with mt)
  • 2001-2005 Honda Civic Coupe (EM) and Sedan (ES) (with mt)
  • K-Swaps using an RSX-S transmission or an RSX-S gear selector in another K-series transmission (requires adapter plate to affix shifter to chassis)
Features:
  • Gear throw can be adjusted as much as 55% shorter than stock, and gate spacing can be adjusted as much as 41% narrower than stock
  • Shift knob height is adjustable 30mm (1.2") higher or lower than stock
  • Stiff, snappy centering action thanks to 3x more spring force than stock
  • Wear-compensating, lubricated joints for consistent, quiet operation
  • Stiff, all-metal frame reduces compliance for improved shift accuracy

Robust enough for the track, Refined enough for the street:

Easily the most capable RSX shifter, the beauty of the ACUiTY 4-Way Adjustable Performance Shifter is due in part to the careful attention to detail and rigorous testing that went into its nearly 1.5-year design process. Shift knob height is adjustable as much as 30mm (1.2") higher or lower than stock, and the knob position can be adjusted within a 52mm (2") circle to help put the shift knob just where you want it. Gear throw and gate spacing are independently adjustable and allow for mild to rather extreme reductions compared to stock (up to 55% shorter throw and 41% narrower gates). The unique linkage design provides a substantial reduction in throw for quick shifts in a form factor that easily fits under the RSX's console (as well as the DC5 Integra console). This shifter's robust design makes it equally at home in a K-swapped vehicle using an RSX transmission. Using the gate and gear adjustments, it's easy to tune the H-pattern spacing of your shifter to your exact liking. In addition, the shifter's frame is built from a careful combination of aluminum and stainless steel to improve the frame's stiffness while being mindful of weight. A large-diameter, aluminum pivot ball in a wear-compensating, spherical race provides smooth shifting with minimal friction and great long-term wear-resistance. Centering is quick, decisive, quiet, and consistent, compliments of a thick, over-wound centering spring and re-engineered spring perches. On top of all this, the spherical joint in the rocker has been heavily upgraded over the OEM design to allow for wear-compensation, to avoid the play that typically develops in the OEM shifter. 

What to Expect:

Expect a significantly different and more sporty shifting experience, even when compared to our Stage 1 shifting kit and most similar aftermarket RSX shifters. This is not just another RSX shifter; it was engineered to provide an incredibly satisfying, precise shifting experience. At first, it may take some time to adjust to the extreme reductions in throw and gate spacing, as well as the stiffer centering action, but in a short while, you will find the shifter's precision, short throws, narrow gates and snappy centering making every driving experience an opportunity to put a smile on your face. You will likely find that the improved precision will lead to more confidence in quick shifts and more consistent shifting in general. Because the shifter is made from much stiffer materials than the stock shifter, shifts will feel more rigid, defined, and confidence-inspiring during spirited driving. The discerning driver will notice more feedback from the gearbox compliments of this rigid construction; this can be useful in determining the quality of your footwork on the clutch and shift timing. The exact shifting feel is largely up to you, and we highly suggest you take time tuning the gate spacing and throw to your liking before reinstalling the console. The exact ratio of throw distance to gate spacing is a very personal matter; take advantage of the adjustments to make the H-pattern perfect for you. The joints in Acuity's shifter are carefully designed to be low-friction and very efficient at wear-compensating. This means that your shifter will give you a much longer service life than an OEM shifter before any signs of wear are noticeable.

 

INSTALL GUIDE

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 90433243691

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4.2 ★★★★★
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Verified Purchase
J N Brown
Grantham, US
★★★★★ 5
Tips and tricks
I watched several videos by professionals who used this. Follow instructions. Make sure the engine is warm before you put it in. Make sure you have everything you need. The biggest tip I got that was repeatedly emphasized by the pros was to buy a “cheap” oil in addition to the new oil. After you run the flush drain the oil and flush. Put the cheap oil in and “rinse” the inside of the engine with the cheap oil. Then drain again. Replace the oil and filter with your good stuff. I followed these instructions or suggestions and…. I sat in the truck while the flush was running. It’s a 13 year old truck with 150,000 miles. It was running strong but burning oil and kind of loud. Sounded like it was growling. There were some ticking type noises that made me nervous. As I sat in the truck and let the flush cycle through the engine at idle I could literally hear the flush working. Very slowly it was like someone gave the engine a Xanax and you could hear it getting quieter and calming down. I drained, rinsed with cheap oil only letting the cheap oil run through at idle for another 15 minutes then drained again. The oil flush was clearly important. It didn’t come out as black as the first drain but it looked like old nasty oil. The truck is no longer burning oil. My gas mileage has increased significantly and it is running so quiet and smooth it’s unbelievable. I used a little less of the liquid Molly flush than it called for regarding the flush to oil ratio. I didn’t want to do something too intense to the inside of the engine. But the results were remarkable. Just as advertised after following the instructions. I also added the liquid Molly oil additive to the final oil change to ‘lube’ the inside of the engine. I plan to do another flush in about 10,000 miles. All that to say, yes, you won’t be disappointed as long as you follow instructions and a few tips and tricks. My truck is almost running like a brand new truck and again it’s an old and tired truck. I will use this as part of a high mileage maintenance and perform the flush every 50,000 miles or so. I feel confident it will extend the life of my engine based on the results
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 9, 2024
C
Verified Purchase
ChimChim
Dallas, US
★★★★★ 4
Seems to have helped
Bought a used 2020 Jeep Sahara 2 liter turbo charged with 80k miles from a dealership. Dealership had just changed oil the day of purchase. Drove it home 30 miles down interstate and another 20 back roads, it ticked and tapped allot at idle and the dip stick was varnished. I added the flush, let it idle for 10 minutes and drained it. The new oil from the dealership drained out jet black, no light could pass thru it. I changed the oil with Walmart oil and a cheap oil filter and let it idle for 5 minutes to clean out all the engine flush, it drained out clean and clear. I refilled it with Pennzoil Platinum High Mileage oil and a Fram Ultra Synthetic oil filter. It's been a week and the engine is noticeably quieter and smoother since using this product. If nothing else it cleaned allot of carbon from inside of my engine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 25, 2025
T
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The Inspector
Carnegie, US
★★★★★ 5
HOLY CRAP!!!!
So my 2005 Durango has a 5.7 and I put on 253,000 miles on it before it blew a head gasket. Since it was summer, iI decided I'd tackle it myself. The upper end was so full of gunk, I can't believe I hadn't had serious issues. Anyway, I apparently dropped some pieces of crud down the oil channels, 'cuz after putting it all back together, I got alarms for low oil pressure. Figuring I'd try anything else before replacing the oil pump, i gave this stuff a try. WOW!!!! Not only did the oil pressure return, the engine runs SO much smoother! I had forgotten how smooth it ran when it was new. The caveat is that apparently the gunk was the only thing keeping some areas from leaking - as it lost oil at a startling rate. 1 bottle of the Liqui Oil Saver though, and within a week the oil leaks completely stopped.
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Reviewed in the United States on November 8, 2025
M
Verified Purchase
Marlana Lupo
San Leandro, US
★★★★★ 5
Awesome!!
Had a check engine light come on for cam shaft position. Did some research online about the specific code and found that I could be due to sludge in the engine. Added this and ran for about 30 minutes and then had the oil changed. The light never came back on and the engine is running smooth and quiet. Will definitely use again.
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Reviewed in the United States on April 5, 2026
D
Verified Purchase
Discovery
Lexington, US
★★★★★ 5
Great product
This brand is great. The car is running great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 4, 2026

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