Drivetrain Tremec TKX 5-Speed

Swhitney · Feb 1, 2022

Has anyone installed and ran the Tremec TRX transmission? TRX 5-Speed

Originally I was thinking about running a T56, but now that I look at it, it seems like a hassle. There's technically nothing run with running a 5-speed in a Fox as long as it stays in one piece.

Is this a direct bolt in transmission?

Thoughts?

nickyb · Feb 1, 2022

I've looked at the tkx, you need a new clutch,belhousing,and rear yoke. Then it's a bolt in.

Swhitney · Feb 1, 2022

nickyb said:
I've looked at the tkx, you need a new clutch,belhousing,and rear yoke. Then it's a bolt in.

So it’s similar to a T56 needing a bunch of other stuff. Seems like a good 5-speed that’s able to handle 600 ft-lbs.

Middleagecrisis · Feb 2, 2022

I was looking at converting over from my current AOD to a 5/6 speed in the future. Even though it's more expensive than a T-5, you'll never break these newer Tremec's. Can't say the same about the T-5s. No trans tunnel mods are required, that was my biggest concern.

Sparky714 · Feb 2, 2022

I just got mine bolted in. Still winter here in North Dakota so it will be a few months before I can drive it. @nickyb is correct. You'll need a bellhousing, 26 spline clutch and a new yoke. I put in a new crossmember and trans mount too. I went for the .68OD model so the gear ratios will be close to my T5Z I took out. Ordered the whole setup from LMR.

nickyb · Feb 2, 2022

Sparky714 said:
I just got mine bolted in. Still winter here in North Dakota so it will be a few months before I can drive it. @nickyb is correct. You'll need a bellhousing, 26 spline clutch and a new yoke. I put in a new crossmember and trans mount too. I went for the .68OD model so the gear ratios will be close to my T5Z I took out. Ordered the whole setup from LMR.

Got the same if trans jack. What did the setup run you?

General karthief · Feb 2, 2022

And where did you get it, what brand?

Swhitney · Feb 2, 2022

Sparky714 said:
I just got mine bolted in. Still winter here in North Dakota so it will be a few months before I can drive it. @nickyb is correct. You'll need a bellhousing, 26 spline clutch and a new yoke. I put in a new crossmember and trans mount too. I went for the .68OD model so the gear ratios will be close to my T5Z I took out. Ordered the whole setup from LMR.

What transmission is that?

Swhitney · Feb 2, 2022

I’m confused, so go with a TRX T5 or a T56? I guess I’m not concerned about replacing the clutch. I thought the stock clutch system is a 26 spline, no?

90sickfox · Feb 3, 2022

My tko600 from Hanlon Motorsports is awesome. I can only imagine what a TKX must be like.

Sparky714 · Feb 3, 2022

Swhitney said:
What transmission is that?

Tremec TKX. You keep saying TRX. Your title is wrong, it’s TKX

Sparky714 · Feb 3, 2022

Swhitney said:
I’m confused, so go with a TRX T5 or a T56? I guess I’m not concerned about replacing the clutch. I thought the stock clutch system is a 26 spline, no?

Stock clutch is 10 spline. T56 if you’re going to make really serious power. TKX is all new case design and uses same synchros as T56 and is the replacement for the TKO 500 and 600. Not rated for as much power as the T56, but easier fit. T5 for cruiser, medium power and occasional track use. I’m currently make about 450 wheel and have never broken a T5, but plan on increasing power in the future.

Sparky714 · Feb 3, 2022

General karthief said:
And where did you get it, what brand?

You asking about the transmission jack? Harbor freight. $149.

Sparky714 · Feb 3, 2022

nickyb said:
Got the same if trans jack. What did the setup run you?

Shipped to my door, just under $4,200

nickyb · Feb 3, 2022

General karthief said:
And where did you get it, what brand?

Harbor freight under a hundred, used it a couple of times and must say was worth it.

7991LXnSHO · Feb 3, 2022

TRX wheels. An easy mix up if not a typo or auto-incorrect.

limp · Feb 3, 2022

LMR advertises it ships their TKX via freight truck... Was it on a pallet?

Sparky714 · Feb 3, 2022

limp said:
LMR advertises it ships their TKX via freight truck... Was it on a pallet?

Yes. The whole order was banded on a pallet and arrived by FedEx freight. They add $100 flat fee for shipping. Everything showed up in perfect shape.

limp · Feb 4, 2022

If anyone is going to buy one, I would recommend LMR or a tremec dealer who palletizes them like this . Worth the $100 extra.. MUCH better than getting one destroyed by UPS..... Will call would be the other good option....

Swhitney · Feb 4, 2022

limp said:
ing to buy one, I would recommend LMR if this is the way they package them for freight. Worth the $100 extra.. MUCH better than getting one destroyed by UPS..... Unless you will call one ....

I guess I didn't know LMR carried them. I don't mind going thru a 3rd party vendor what so ever. I'm more curious if I should just bite the bullet and go with a 6-speed or stick with the 5-speed that can handle more torque?

Also, what gear ratio is right for me, and how would I know?

Drivetrain Tremec TKX 5-Speed

Swhitney

Active Member

nickyb

I gotta say i never painted my nuts, Never Ever

Swhitney

Active Member

Middleagecrisis

Active Member

Sparky714

nickyb

I gotta say i never painted my nuts, Never Ever

General karthief

wonder how much it would cost to ship you a pair

Swhitney

Active Member

Swhitney

Active Member

90sickfox

Wasn't a pretty sight...and I've got big hands

Sparky714

Sparky714

Sparky714

Sparky714

nickyb

I gotta say i never painted my nuts, Never Ever

7991LXnSHO

wanna catch the space herp

limp

wrap a little cheese around it and its a done

Sparky714

limp

wrap a little cheese around it and its a done

Swhitney

Active Member

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Drivetrain Tremec TKX 5-Speed

Active Member

I gotta say i never painted my nuts, Never Ever

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I gotta say i never painted my nuts, Never Ever

wonder how much it would cost to ship you a pair

Active Member

Active Member

Wasn't a pretty sight...and I've got big hands

I gotta say i never painted my nuts, Never Ever

wanna catch the space herp

wrap a little cheese around it and its a done

wrap a little cheese around it and its a done

Active Member

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