Posts
2095
Joined
10/5/2017
Location
Sydney
AU
Fantasy
2582nd
Edited Date/Time
6/2/2022 9:33am
So after scrolling through old forums and reading through factory bikes over the past decade... A real eye catcher came through of JS7 2004 factory KX 125sr.
The parts on that bike are way ahead of its time!! so after doing some digging i could only find a hand full of early 2000's bikes that showed there factory trick bits. Most internal motor work which was never discussed
I was wondering if any one else has got an insight or know of any other cool parts that had been R&D many yeas ago that we still havnt seen today or better yet redesigned.
I know there are more sensors now and DLC coatings and titanium engine mounts and Bits.
I seen Destry abbots and AC92 run a 93 KX500 brake pedal and Rear Swing arms on there KXF's because of the design was more suited to there style and Longer.
Same with JS7's 125. He had a KX250 swing arm on during Motocross season because it was longer and felt more stable at high speeds.
But does any one know of any other trick bits we haven't seen in a while or different to the usual?
Pics are of a few bikes over the years. Krocs 450 with 02 sensors, JS7's 125 carbon scoops, Metty's 125 with the DLC coated internals, RC4 RM250 carbon brake cover, Reeds Factory Carbi in 2004 etc..
The parts on that bike are way ahead of its time!! so after doing some digging i could only find a hand full of early 2000's bikes that showed there factory trick bits. Most internal motor work which was never discussed
I was wondering if any one else has got an insight or know of any other cool parts that had been R&D many yeas ago that we still havnt seen today or better yet redesigned.
I know there are more sensors now and DLC coatings and titanium engine mounts and Bits.
I seen Destry abbots and AC92 run a 93 KX500 brake pedal and Rear Swing arms on there KXF's because of the design was more suited to there style and Longer.
Same with JS7's 125. He had a KX250 swing arm on during Motocross season because it was longer and felt more stable at high speeds.
But does any one know of any other trick bits we haven't seen in a while or different to the usual?
Pics are of a few bikes over the years. Krocs 450 with 02 sensors, JS7's 125 carbon scoops, Metty's 125 with the DLC coated internals, RC4 RM250 carbon brake cover, Reeds Factory Carbi in 2004 etc..
Also does anyone know if bikes are not allowed to run aftermarket radiators? It seems like all the factory bikes still use the stock stamped aluminum radiators.
He pretty much had shaved casings, Hinson Clutch pack decked out with Titanium and Coatings on everything that moved to reduce the friction.
The Shop
and how much better, like 20% 40%??? (tho that is somewhat subjective)
mxa used to test a lot but not sure if they ever did back to back..
There was a guy that bought an ex factory YZ125.
Pretty much had all the TI parts, special works transmission that apparently was really hard to get into neutral and spreads the rev range, coatings, blue printed to a tighter tolerance, factory carby that is pretty much works the same as them new Lectron carbys, shaved cylinder and barrel, plus not to mention the port and polish job that had been carried out.
So with that minor info, you can only imagine what else went into a factory 2 stroke back then.
it was and still is a massive secret about the internals and motor work for the KX125SR and 250SR edition. to the point they couldn't be test rode by magazines. No idea why, but even the suspension on them was only 2 sets made. Byrner and JS7 had the 2 sets. 1 set got crushed, the other was on JS7 2004 KX250 that was given to RV2 as a retirement gift. (which he rode at straight rhythm)
Those 1985 footpegs are narrow as hell compared to today!
Pit Row
What the heck is the black cylinder with the cable running into it? Right behind where the kick start lever should be.
https://www.vitalmx.com/forums/Old-School-Moto,22/The-Last-Factory-YZ12…
www.crracing.com/
Even know on the newer factory bikes, I seen Anderson swapping between carbon engine mounts and swapping across to TI ones depending on the track.
thought that was pretty cool, don't know if i would notice a huge difference but these factory guys can pick up on the slightest change.
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