Yamaha YZ250 Two Stroke Trail Weapon Transformation - Dirt Bike Magazine
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- Опубликовано: 1 дек 2020
- #dirtbike #motocross #offroad
Dirt Bike Magazine gives you an exclusive first look at our 2007 Yamaha YZ250 build with Rado Bartovic from Dirt N’ Iron that we turned into an ultimate trail weapon. On this build we worked with industry leading companies like Wrench Rabbit, Supersprox, Dunlop, TM Designworks, UFO Plastics, Tom Morgan Racing, and Nic at Decal Works topped it all of with a semi custom graphics kit that literally sparkles under the studio lights! IMS oversized gas tanks are essential for off-road builds providing almost double the amount of fuel capacity as stock. These are available in both natural color and black with screw-on cap or dry-break, quick-fill systems. We will never complain about more time on the trails.The FMF Turbine Core 2 silencer is crucial to this off-road build keeping us legal on the trails with a US Forestry Service Approved spark arrestor system.As you can see almost every bolt on the machine was replaced using a Spec Bolt Nickel Wurks kit. They are stronger than OEM and look way cooler. Internally the transmission received big upgrade via Hinson Racing components and a WR250 wide ration gear conversion.The engine was completely rebuilt using a kit from Wrench Rabbit and Tom Morgan Racing worked their magic on the cylinder head combination. A V-Force intake system and Smart Carb now supplies the engine with fuel.
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You built it for tight technical trails and then hire a motocross rider to blast it around motocross style terrain makes perfect sense, this should be called "The Bike Bling and Sticker Show".
Blast around sounds better in a video like that... :-)
Built for tight technical trails... proceeds to test it on wfo trails...
Exactly....
I dont think they can ride tight tecnical trails....
That's how they do all their tests they test woods bikes on mx tracks
@@singletrackmarc819 I'm subbed to their channel but their reviews really annoy the crap out of me. I should probably unsub.
@@rztrzt ya they piss me off too
Here to support Dirt N Iron 👍
Specbolt bling showing up all over this bike. Thanks guys!
Life is too short not to have a YZ250.....or X
I’ve had several, they rock.
Awesome job, Rado!!!
That bikes a monster Rado builds some great machines
Love your premix series. Keep going!
Man I'm drooling! I'd love to get it on my 6 mile loop and do battle with the trees and rocks!
Nice!
Awesome job Rado @dirtniron
Those Ethos Vision goggles are🔥
so we wanted to build a bike for slow technical trails and then we show you exactly zero seconds of what it does in slow technical trails
Very nice bike sir....i was praying to have 2stroke bike like that😔🙏🙏
Come to the east coast and test TV that thing in the tight woods in south Jersey
I am lowering the power in the power curve for my 2-stroke YZ250 also (2019). I won't be able to ride it until spring, and what i am doing is reversible, but I expect it to be a really good lower end and mid range motor for this kind of riding. Every bit of it is geared to shift the power down, (like this bike), and if overkill, I can change something back. Not using a flywheel weight--yet. Not sure yet.
1) New top end kit with a Weisco piston. Get rid of that soft stock piston as fast as you can. I would have had a piston failure before a set of rings wore out if I did not tear it down.
2) V-force reeds. But with out that stock aluminum spacer between the reed and cylinder, (reduce drank case volume, more mid range hit). V-force reed also "unblocks" the rear reed transfer port tunnel as it does not use reed stop plates that block the hole about 50%.
3) I do a bit of port cleaning and champhering, especially on the Ex. port. My stock port was very hard on the rings.
4) Add the FMF Gnarley pipe.
5) Lower the cylinder by not using a cylinder base gasket, (about .024"), and seal it with a great sealer that resists gas, (no silicone). This will lower the ex. port time area to better match the lower RPM FMF pipe. This will require 100 octane gas, as there will also be more compression.
6) Make sure the ignition time is in the center mark. Some come from the factory, "off the mark".
7) After that is done, jet the carb well.
I am pretty sure I am going to love this set up for trails like these, and none of the mods are permanent. I will probably end up changing it up a bit after riding. Will see. :)
From a set of Cycra full wrap bark busters, I made the strongest, most compact, most adjustable full wrap bark busters, and can't find a manufacture who wants to buy it.
Bummer. You guys would love them.
I would call that a trail racer weapon.
is the mpg ever an issue or trail riding or would it be tough for a gp race. something like Adelanto gp or Elsinore
cast or forged piston?
Sprocket gearing mate??
Can I drive enduro with a 2018 YZ250, or will I crash it every 5 minutes? I'm considering buying one. It has already been modified with an 18" rear wheel/tire and a full FMF system. I'm a lower-intermediate rider, so I understand that I probably should buy a WR250F instead, but this '18 YZ250 I found is so gorgeous that I fell in love with it instantly. 😅
Late response but I ride enduro with a 2007 250sx-f plan on getting a YZ soon
dirt bike videos from yesterday
no mention of the aftermarket carb?
Smart carb because they are afraid of jetting
Fucking dope bike
If that’s slow technical, I’d hate to see your version of fast.
Thats a pure Rado / Dirt'NIron build, shame on you for making out you had anything to do with it other than ride it and make a few vids! Getting traction off Rados hard work - BOO!
I have a 2021 stock Yamaha 250x. I ride at Brushy Mountain and Brown mountain. I wish I would have bought a KTM 300 XC-W.
@@sekacity3425 Dumb dumb? How about figuring it out and modifying it. Any dumb dumb can keep buying bikes (if they have the money for any reason), until they find one they like. But experience tells me, if you strive for the best ride you can make it---your gonna modify it anyway. Not as much as a YZ though.
When I am done with my YZ, it will be the best trail bike I ever built for me. :)
So... Have you ever heard of Hard Enduro?
Yes. I think it started with a poor education system, with spelling and definitions in this case.
We mixed up "Trails" with "Trials", and those hard Enduro folks are riding Trials with Trail bikes.
We really have to sue our school systems. :)
Y’all left so much out of this video it is a fail.
Getting famous off comments day 189, so I can live the dream, live everyday like it’s your last day🤙🚀🤙
Lol
Dude that's all you ever have to say and the last part of your statement is the only thing worth reading.
This is trail riding: ruclips.net/video/NEbrVHaagUY/видео.html
Sometimes, there is no trail. :)
0:38 Dirtbike Magazine professionals. Your bike is running very rich, see the mess? Your losing 2hp. You don't know how to jet a carb?
MXA is also a shell of the mag it used to be.
Those aren't trails and that's not a trail build. Come to the East Coast and enjoy some mud covered roots and rocks during a thunderstorm. Promise you will not be looking for harder off idle hit. 🤣
Well, I am in Michigan and I love 3rd gear whooped out single track. I see this new "Hard Enduro" stuff, and it seems to me today, people are confusing trails with trials.
But then again, everybody is now riding with a high handle bar freestyle set up and I guess figure "The taller the bike the better" too. :)
Man, compared to the 80's, this has become one dysfunctional industry.
Graphics and plastics look like ass. The rad shrouds are huge old school stock shape and the side plates are tiny wannabe KTM copies, and the colors don’t even match either. Do yourself a favor, go buy an aftermarket graphics kit instead of designing your own, there is a reason they sell thousands of them instead of just one. Not every one is an artist and not everyone is a dirt bike builder and even fewer are good at both. I’m leaning towards this build being better at the bike building part than the graphics/artist part.