450 Plastic on 426 COMPLETE WITH PICS

[goodysttr]

I want to find a black tank for a 03 any one kn ow wherei can find this? Reason being is I want to run white plastics and dont want a blue tank.

[spriggan]

clarke.......

[manther]

finished mine:

Before

In process

After

Final w/ graphics

Really happy with the conversion. Feels tons lighter up top. This really helps with the tight twisty trails. Ergos feel great too. I have Astericks knee braces, and getting up further on the tank is pretty easy with this slimmer shape.

[grayracer513]

A distinct improvement.

[manther]

A distinct improvement.

Thanks bro! Definitely one of the more satisfying mods I've done to a bike.

[rmx250rider]

Anybody having problems with there exhaust and the shock? I can bearly fit a quater between there

[mxgene]

Anybody having problems with there exhaust and the shock? I can bearly fit a quater between there

I did mine last year and did have an issue with the stock 426 exhaust.

On the new subframe, I had to elongate the subframe exhaust mounting hole so I could mount the pipe lower.

Then I got smart, bought a 450 exhaust for it and now I have plenty of clearance between the shock and the pipe.

[jocolo]

I gues i posted this before but here is the template for the gas tank mount. Made the templates from sheet metal a member from TT mailed me the templa and pictures, you can see my bike from Yz426 to Yz plastics to Supermoto.

[02WR426Cali]

I gues i posted this before but here is the template for the gas tank mount. Made the templates from sheet metal a member from TT mailed me the templa and pictures, you can see my bike from Yz426 to Yz plastics to Supermoto.

I do like the inginuity of this mod and it may feel slimmer, but look at your two pics, you can't tell me that the tank and seat are lower or farther up than the stock setup. I like the looks of your stock parts better

[Forddriver45]

Need some one too walk me throw making the tank mounts.

[rmx250rider]

you really dont need the mounts. Unless you really want them, I just took the gas tank mounts off and let the shourds, the rubber strap, and the seat hold it on.

[grayracer513]

you really dont need the mounts. Unless you really want them, I just took the gas tank mounts off and let the shourds, the rubber strap, and the seat hold it on.

Bad advice.

[rmx250rider]

How is that?

[grayracer513]

Speaks for itself. If Yamaha didn't think the mounts were necessary, they would have omitted them. They didn't.

[rmx250rider]

can you show me where anything has went wrong when somebody didnt use them?

[grayracer513]

Until now, I've never seen anyone who was, um, disposed, shall we say, to try it. Seems obvious enough to me, but you go right ahead.

[rmx250rider]

I been runnging like this since I put the 450 body on, and nothing has happend....

[anthony250]

I gues i posted this before but here is the template for the gas tank mount. Made the templates from sheet metal a member from TT mailed me the templa and pictures, you can see my bike from Yz426 to Yz plastics to Supermoto.

Thats pretty sweet !!, I got the same pipe, Yosi , how do you like it ?

[myoung]

Need some one too walk me throw making the tank mounts.

Sorry I didn't see this sooner. I know it's a bit late, but maybe some one else can use the info.

Here is the template........

Easiest way to lay this out is to locate the top two holes at the 3 15/16", then use a compass to locate the other two holes with the two measurements that will cross each other and give you their position.

Here is the pieces..........

Here it is mounted.........

[myoung]

I do like the inginuity of this mod and it may feel slimmer, but look at your two pics, you can't tell me that the tank and seat are lower or farther up than the stock setup. I like the looks of your stock parts better

The very front of the seat and top of the tank sit approximately an inch lower, this makes it that little bit easier to get way up on the tank in turns. This lower height combined with the different design of the tank and where it carries the bulk of the fuel gives you a slightly lower CG. It's still a heavy bike, but so were the '03-'05 450's. It's a much slimmer design with better ergo's and it's also a lighter package when you weigh the difference between everything that gets swapped, more so on steel subframe bikes. Not to mention that to most, the 450 looks better than the 400/426 and it makes for a nice facelift on a bike that has a green sticker here in California.