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TOPIC: DTX Rule Clarification

DTX Rule Clarification 03 Mar 2012 05:14 #166659

  • Tdub
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I posted this in the Rules Forum, but thought I might add it here as well as that forum doesn't get alot of traffic (though it should).

Amateur DTX only
After reading several race reports and for sale ads, I thought I might bring this up. Adjustable aftermarket shock clevises are NOT allowed in the DTX classes. Altering the rear ride height is allowed by internal modification only. Linkage may be replaced with OEM spec aftermarket parts.

8. OEM front and rear suspension may be altered with
internal modifications only. Springs and linkage may be
replaced with aftermarket parts
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Re: DTX Rule Clarification 03 Mar 2012 16:43 #166675

  • KevSnyd
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Tryce , I also want to make sure that they know per the rule book,it reads that the bottom Triple clamp must be OEM/Stock it doesn't state that the top one has to be stock????. Kevin
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Re: DTX Rule Clarification 03 Mar 2012 17:59 #166679

  • dirttracker
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The top is able to be changed so a rider can run a steering stabilizer, otherwise stock top clamps required. My understanding from the AMA.
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Re: DTX Rule Clarification 03 Mar 2012 18:10 #166681

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KevSnyd wrote:
Tryce , I also want to make sure that they know per the rule book,it reads that the bottom Triple clamp must be OEM/Stock it doesn't state that the top one has to be stock????. Kevin

That is correct Kevin. The rule was modified to allow the use of aftermarket upper T-clamps to allow the use of certain aftermarket handlebars.
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Re: DTX Rule Clarification 03 Mar 2012 18:13 #166682

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dirttracker wrote:
The top is able to be changed so a rider can run a steering stabilizer, otherwise stock top clamps required. My understanding from the AMA.

The top clamp can be changed for any reason. Previously your statement was correct, but then it was decided to allow anyone to change their top clamp for function or cosmetic.
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Last Edit: 03 Mar 2012 18:15 by Tdub.
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Re: DTX Rule Clarification 06 Mar 2012 18:55 #166849

  • slideways@61
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So a devol lowering link is not allowed even though it is not ride height adjustable, and certainly does.not make any difference in the performance other than letting a short legged kid feel comfortable ? !!!! A question and a statement all in one :)
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Re: DTX Rule Clarification 06 Mar 2012 19:00 #166850

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A Devol lowering link is legal because it replaces stock linkage , Correct ?
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Re: DTX Rule Clarification 06 Mar 2012 19:29 #166852

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8. OEM front and rear suspension may be altered with
internal modifications only. Springs and linkage may be
replaced with aftermarket parts.

First off, the reason to not allow lowering the bike with a link such as the Devol is a safety issue. When using a aftermarket linkage that is not oem spec to lower the bike, it does only that...lowers. Yet it offers the same amount of travel, which makes it possible for the tire to come in contact with the rear fender...not good when landing off a jump. It also maintains the original "softer" rate which is not always a good thing when your travel has already been limited by the distance to the rear fender.

The link may be replaced with the Devol if it is the same dimension as OEM. To lower the bike, like it says all modifications must be done internally.

As the rules have been changed 2 years ago, there is still some fine tuning to do to make them as clear as possible. Trust me when I say that it is with your rider's safety in mind. And thanks for bringing the question up as now the "grey" area can be addressed.
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Re: DTX Rule Clarification 06 Mar 2012 23:54 #166864

  • jack51
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How about a Durelle ride height adjuster? From what I've read so far sounds like the answer is "no" but I'd rather ask and be sure. Thanks.
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Re: DTX Rule Clarification 07 Mar 2012 00:39 #166866

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jack51 wrote:
How about a Durelle ride height adjuster? From what I've read so far sounds like the answer is "no" but I'd rather ask and be sure. Thanks.

NO...as in AMA Sports Amateur competition in the DTX classes.
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