View Full Version : Are all adjustable cam gears created equal?

04-21-2011, 10:11 PM
I want to pick some cam gears and as I am shopping around I can't help notice that the price range is huge for these things. The range goes something like this.

DNA $75 for a pair
OBX $160 for a pair
Fidanza $180 for a pair
AEM $250 for a pair
HKS $359 for a pair

These are fairly simple billet milled gears, are they really so different? can I do well with the $75 set?


04-22-2011, 03:34 AM
Never even heard of DNA. Also forgot ATS gears which are $150/set.

And no, they are not all created equal. Find some that are at least 4 bolts to reduce the chances of slip. I believe the OBX and Fidanzas are 4, AEM might also be, HKS is definitely 3. ATS gears are 5 bolts. Also to keep in mind is material. ATS uses stock outers so the belt will wear like stock. Old school HKS and possible AEM had anodized outers (teeth) that would wear down quickly and once the anodizing wore off, it woulds shred the belt. New school HKS gears have been revaped with nickel plated outers IIRC.

For the money, $75 is pretty cheap but at the same time, doesn't sound very common. Got a link? For a bit more you can get some ATS gears that have been well proven to hold up to years of abuse. My Engine Logics/ChrisK gears (same basic design, machine cut center with stock outers) have been working for me just fine for the past 5 years.

04-22-2011, 04:17 AM
Another thing to consider (on top of the bolt type/quantity) is some of the cheaper brands have been attributed to accelerated timing belt wear. ATS is great for that because the teeth are stock Toyota.

I personally went with Fidanza, haven't installed them yet but they seem quite nice.

04-22-2011, 04:28 AM
I had never of DNA before either, but that doesn't mean anything. They say that they hard anodize the gear teeth, everyone else says the same thing with the exception of one who nickel plates

I couldn't find any pics about the ATS adj cam gears got pics of your?, but yes, they are $150 with your OEM cores

I am leaning toward either the Fidanza or the DNA

I gotta say, I don't see much difference between any of them functionally, some do look slicker than others. it looks like all of them have replaceable studs/nuts. all of them have 6061 billet milled inners. all of them have laser etched degree marks(except the OBX has no marks) some have more adjustment than others but all of them seem to have plenty.

Here are some links...I used ebay because I could find all of them quickly

I'll pay for quality when it's there but are the HKS one really 500% better than the DNA ones? they cost 500% more.

The DNA ones are here





AEM True Time

04-22-2011, 04:39 PM
Im watching this cause I wanna know as well

04-22-2011, 05:56 PM
I would go with ATS since they use the stock gear. They are cheap and very well made. I used a set on my last engine build and will be buying another set for my MR2 build. :)



04-22-2011, 06:25 PM
I have zero personal experience with these, but I do have a bit of general experience with quality vs non quality parts [been a tech since 98].
The ATS are probably your best "bang for the buck".
The DNA are probably a cheap Chinese knock off [didn't check the link].
HKS seems rediculously overpriced, and it takes a lot for me to say that, I'm willing to spend the extra money for a better part.

04-22-2011, 06:28 PM
I will say, I am all supporting vendorness...

ATS is the easy pick.

04-22-2011, 07:42 PM
Is there no index mark on the outer gear on the ATS ones? or is it just not visible in the pictures?

out of curiosity,are the ATS available in colors? not a deciding factor but would like to know if available

HKS and OBX are off my list

Still looking at the



04-22-2011, 08:40 PM
You could always have the centers anodyzed yourself.

04-22-2011, 09:05 PM
Yes, there is a reference mark on the gear. Can't really see it in the picture but I assure you it is there. You won't be disappointed with the ATS gears.

This is what the current ATS gears look like.


04-23-2011, 12:04 AM
+1 for that style, you won't go wrong with either the ATS or EngineLogics pieces. I had/have aftermarket gears on the 7M and the teeth are very easy to damage/chip, which is no bueno.

04-23-2011, 12:24 AM
ATS ones no question. Stock outer so you have stock like reliability with the belt wear. Dont cheap out. 150 is a good price for those. I bought some for mine too.

04-23-2011, 02:57 AM
I like to support the vendors as well. Just spent a bunch with Kevin(Redrkt).

I do like that the ATS gears use allen head bolts rather than studs with nuts. I like the idea of painting/powder coating/anodizing the internal portion now that I think about it. would be cool to match them to the new paint on the car.

ATS is currently in the lead

04-26-2011, 03:22 PM
i have the ATS gears on my All-Trac...not a single problem with them here

04-30-2011, 12:57 AM
My votes for ATS as well, I'm hoping to pick up a set in the near future.

05-01-2011, 09:07 AM
I wish I saw this thread before I installed my obx cam gear. I didn't know some gears would wear out the timing belt faster than others. I bought the pair for $50 so I didn't want to pass them up. BTW the ones I have do have the degree markings