What else can i do to my DT125R?

dtmaster · Derestricted Danger Joined: 22 Feb 2004 Karma :

rite so far ive got :
Full Big one exhaust system
Carbon race reeds
Pipercross air filter
re jeted carb #240

What else is there to do to improve performance? and no stupid answers like buy a better bike....

thanks Ross
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1993 Yamaha DT125r

McJamweasel · BCF Junkie Joined: 22 Mar 2002 Karma :

Mr C · World Chat Champion Joined: 24 Feb 2003 Karma :

absolutely McJ

top of the class for you my lad
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187.3bhp = 201mph

stevo as b4 · World Chat Champion Joined: 17 Jul 2003 Karma :

I take it that the power valve is either working, or pegged in the open position? if so then you will have full power+ a bit more from your other mods hopefully. What are you looking for in terms of performance? bottom end-midrange, or more top end power? If you dont have a working powervalve with the servo motor then thats the next mod i would make, it wont give any more top end, but makes the bike much more driveable at low revs, and sometimes therfore faster. If you need more power then the only things you can do are to have the cylinder and head modified, will will make the motor more powerful at the very top of the rev range, but far more peaky also, or you could fit a 170cc big bore kit, which adds more midrange power, but is likely to take out the big end and crankshaft eventually. I have heard that YZ125 pistons fit the DT, not sure which year though, and that they improve power. You could also fit a bigger carb from a YZ, but again you will only gain a bit at the top end, and the loss of midrange probably isnt worth the hassle. If you can find a 200cc top end from an SDR200 or DT200R then that would probably fit the DT125 bottom end, or even a complete motor, but i dont know where youd find one if at all?

Laura · Playboy Bunny Joined: 28 Jul 2003 Karma :

Do you're test and get a bigger bike as now you have modded you're bike so much yyou are now going to have a game trying to sell it.
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Good girls ride motorcycles bad girls thrash them.

1cyl · World Chat Champion Joined: 04 Feb 2004 Karma :

Ste · Not Work Safe Joined: 01 Sep 2002 Karma :

Or just get a Nova. Plently of pointless thing you can buy for that. Thumbs Up

Gman · L Plate Warrior Joined: 11 Apr 2004 Karma :

hi i hav a dt125r 2003 reg i got carbon race reeds and they did nothing, ive had my exhaust deresricted but its stilll standard, did ure big one exhaust make much of a difference if so how much and in what way? and !WHERE! did u get the rejetters and the airfilter from and how do u fit them? i cant find them any where. until u reply im left with a £3grand 70 mile an hourer Crying or Very sad

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

The reeds are unlikely to do much at all. Most dealers should be able to supply replacement jets for the carb, but you will have to experiment to find out what size jets are required. You can get a single filter from someone like M&P or MPS, but that might give you problems in the wet (the single filters get waterlogged far more easily).

All the best

Keith
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Sparks! · Sir Tart-a-lot Joined: 30 Aug 2003 Karma :

Why spend so much money and time on a DT 125, or any 125 for that matter. They aren't ever going to be that fast and soon you'll just sell it for a bigger bike anyway and when you go to sell, all these expensive go faster modifications aren't going to get you a higher price, if anything they will knock value off as people want standard bikes really.

Get full licence if you haven't already and get a bigger bike if you want to go faster.
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