2021/2022 Yamaha WR450F Power Flow kit part 2. Thoughts. Plus YZ-F/FX450 Pipe to go on.

Motorcycle modifications

[@twowheelpilot]

Excuse the error people. The pipe is a YZF/YZFX pipe for the WR. I managed to name all three models in one go! 😁 Rushing for work and didn't have time to re record the video to correct the error. First world problems....

[@richardhammond2633]

Nice bike and good to hear from a NZ perspective 👍 How do you find it in the slow going? Is it prone to stalling like other modern 4 strokes? If the 4 strokes could be made to lug then 2 strokes would lose their only real advantage. Not much weight difference these days. Cheers.

[@twowheelpilot]

Hey Richard, No four stroke will ever lug like a two stroke which is almost diesel like with regards to stalling. However the WR is pretty dam good. Load the right fuel and ignition timing into it and it's better than any other modern four stroke I've owned with EFI. I'll try and get a video up loaded of me in the yard with it lugging around with no clutch at all.

[@richardhammond2633]

@@twowheelpilot Thanks for the info. I have a 2020 wr 250f and love it. Plenty of power and very snappy, picks up revs in an almost 2 stroke like fashion. Only problem is that it can stall pretty easily in the real tight stuff. I've played with the mapping and it's certainly a great feature but I think the light flywheel and cam timing is probably the real issue. I had a 2019 250fx and it lugged really well but they changed things on the 2019 yz 250f and that was carried through to the 2020 wr250f. I realise the 2 strokes have the advantage due simply to the fact they are firing twice as often but they run out of puff pretty quick too. Looking forward to seeing you do some technical stuff. Thanks again.

[@robsonenduro3316]

how is the plastic quality on this bike? break easily?

[@twowheelpilot]

Very good and flexible.