Hey all, A couple of months ago I horse traded into this ‘03 Yamaha WR450F. I already have a Husqvarna 701 Enduro for a proper Dual Sport. so I figured why not do a Supermoto?

Here’s what I started with its butt ugly, but it runs well and has a fresh proper top end with no hours on it.

I’ve got it torn down, and dropped the frame, subframe, swing arm, bars, bash plate, shock spring and a few other parts off at the powder coater today. Those parts on the floor are getting done in Yamaha Racing Blue. While everything is apart I’m just going to go through and refurbish everything. I’ve got everything on hand for the build except the 17” wheels. It’s getting black ‘05 YZ plastics,black IMS tank, I ordered custom graphics that are mostly black with some nice blue and white accents. I’m hoping to get the forks and shock rebuilt this weekend. I want to Cerakote those in Titanium with Graphite Black accents. I can do that and powder coat the smaller parts at home. I’ll at least get that rear shock done and ready for the spring when it comes back from powder.

This is my first WR450F and my first Supermoto, so I thought I’d share the project and see if there’s any wisdom anyone wants to share. I do a lot of bike builds, mostly restoration and custom stuff, so none of the mechanical or fabrication stuff is new territory. But I am newish to dirt bikes having only ever owned a WR250R and the 701.

Ich habe eine neue Beta RR50 x special edition (E5+, 2026) und habe gemerkt das ich flecken auf meinem Krümmer habe (der große schwarze Fleck ist ein Stück Handschuh das draufgeschmolzen ist) und der Rest ist wahrscheinlich auch Plastik, habt ihr eine Idee wie ich den Krümmer wieder sauber (sauberer) kriege, das Plastik ist relativ fest reingeschmolzen, und außer den Handschuh Fleck kann man die Flecken eigentlich fast nicht spüren. Habt ihr eine Idee/ einen Tipp wie ich den Krümmer wieder sauber kriege?

Gonna pop this on the old KTM 500 SM, retune it with the new secondary fuel injector, and head back to the dyno.

Machine shop finished the boring job today. Did a little hand filling on the throttle plate to take some angle out of it.

Old dimensions: plate 44mm, head side opening 41mm

New dimensions: 46mm plate (+10% cross section), head side 43.5 (+14.5%)

Old dyno 56whp. Hoping to crack 62-63 whp with the new set up.