6th gear Long Ratio 6MT Gear Kit - 2nd-6th Set
SKU: 87163094054
6th gear

6th gear Long Ratio 6MT Gear Kit - 2nd-6th Set

Sale price$25.94 Regular price$28.82
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

6th gear Long Ratio 6MT Gear Kit - 2nd-6th SetHIGH SPEED RATIOS Our long ratio set offers a matched set of replacement gears and main shaft for 2nd 6th gear. For USDM MY04 06 STI transmissions this provides improved 2nd 4th gear ratios making the car more suitable for drag racing, and higher speed road courses as well as general street performance driving. This also applies to all JDM STI models (or other international applications using the same ratios). For MY 07 21 USDM STI transmissions the

HIGH SPEED RATIOS

Our long ratio set offers a matched set of replacement gears and main shaft for 2nd-6th gear.  For USDM MY04-06 STI transmissions this provides improved 2nd-4th gear ratios making the car more suitable for drag racing, and higher speed road courses as well as general street performance driving.   This also applies to all JDM STI models (or other international applications using the same ratios).  For MY 07-21 USDM STI transmissions the 2nd-4th gear ratios will be unchanged (MY19-21 slight 3rd gear ratio difference).  The 5th and 6th gear ratios are the tallest ratios available and will reduce highway rpms as well as extend the usable speeds in those gears.  The 5th and 6th gear set can be purchased separately if desired.

All gears are REM ISF© treated.  ISF (isotropic superfinishing) is a treatment process that eliminates roughness and microscopic grooving created by the machining processes establishing a highly polished part with minimal dimensional change.  It is non-directional and strengthens the part by reducing or eliminating stress raisers on the surface that can initiate cracks and failures.  The lowered surface roughness has the benefits of reducing friction, lowering gearbox oil temperatures, and eliminating any need for running in the gears prior to fully loading them.

These are factory-based gears and even with the superfinishing process will not hold up to extreme power outputs.  We suggest a maximum of 600whp.

NOTE:  MY04-07 version includes MY07 2nd and 3rd gear synchronizers (required for proper fitment in MY04-06).   This set can be fitted to MY01-03 JDM, UK, or EDM models but requires updating 1st driven gear, 1st/2nd Sleeve & Hub, and 1st/2nd Shift Fork.  Contact us for MY01-03 details.

Gear Ratios (1st-6th):  OEM / 2.235 / 1.521 / 1.137 / 0.891 / 0.707

What it fits:

  • STI MY04-21 (TY856 MT)
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: 87163094054

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Laura W.
Lake Worth, US
★★★★★ 5
Female with no knowledge about cars seal of approval!
Size: For Mazda 3 14-18 2.0L/2.5L|Mazda 6 14-21 2.5L
Perfect for my 2016 Mazda3. I am a young female with zero tools and zero knowledge about cars. My dealer was asking over $60 to change these out, and after a 5-minute course at YouTube University, I was able to do everything myself in under 15 minutes. It’s my crowning achievement of 2026. I recommend gloves when you go to change out the engine and make sure it’s wiped out and cleaned before you put the new one in! But other than that, it’s honestly just popping a few things out, changing the filters, and then popping them back into place. They look almost identical to the filters that were already in there. There was no wrestling with making them fit because they just slid easily into place. Great buy and unbeatable price if you have a few minutes to spare to do it yourself!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
C
Verified Purchase
Cyberbard
Charlottesville, US
★★★★★ 5
Easy Install - Looks like the Original
Size: For Ascent 19-26|Crosstrek 2.0L 18-22/2.5L 21-22
Both of these filters, cabin and engine are really easy to install at home with NO tools needed and at a fraction of the price that dealers charge. These filters are for a Subaru Impreza and look almost identical to the originals and fit perfectly. Cabin filter installation is by dropping the glove box - detach damper rod and unclip sides. Unclip filter cover behind glove box and remove/replace filter checking airflow direction is the same as the old filter. Reinsert glove box and push up to locate side clips. Re-affix damper rod and you're done. Engine filter is equally easy. Unclip air filter housing (not necessary to remove entirely) slide out old filter and insert new on in same orientation. Re-attach clips and done. Took me 10 minutes to change both filters. Longest part was emptying all the cr*p out of my glove box. Good quality filter, easy to install and saves time and money. I bought a second set for a Mazda CX-5 non turbo and quality was the same. Installation exactly the same as above for the Subaru
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Reviewed in the United States on February 5, 2026
D
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dannyww
West Palm Beach, US
★★★★★ 5
Worked fine
Size: For Palisade 2020-2026
Great fit and value. Installation was easy.
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Reviewed in the United States on May 20, 2026
P
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PH
Omaha, US
★★★★★ 5
Good Filter
Size: For Durango 11-26|Grand Cherokee 11-22 etc.
Fit as it should and works as it should. Good value.
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Reviewed in the United States on April 28, 2026
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Brett D. Crowell
Alexandria, US
★★★★★ 5
Never Pay Again. Easy and affordable for your health and the vehicle.
Size: For Sonata Gas 2015-2019
Way easier to replace than I thought. I’ve done a cabin filter before, but never the engine air filter. After this, I’ll never pay someone to do it again. I actually went into a store first, and the cabin filter alone was the same price as this set that includes both the cabin and engine filters. Since I needed both, this was a no-brainer. Install was quick and straightforward, even for someone who’s not a "car guy". I can’t speak scientifically on how well they filter, but they’re definitely better than the mouse-destroyed ones that were in this car before. Huge improvement. Highly recommend if you’re looking to save money and do it yourself. They fit well and seemed to be exactly what was needed and expected.
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Reviewed in the United States on April 15, 2026

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