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One thing to be aware of is changing the link will affect the spring rate. The 4xv and 5jj have a rising rate as standard, lowering the bike will incr…login to view the rest of this post

The post is 5 years old, try searching on YouTube? There is so much available and you might find something useful.

I thought it might have been too many heat cycles and the rubber went off?

I use Michelin now, and they stay consistent until worn out.

I thought hea…login to view the rest of this post

I'm planning to take the lower fairing off mine in the next week and can take a photo then if you're still looking. I have an old Clymer service manu…login to view the rest of this post

I had a Dunlop Roadsmart rear on another bike that did something similar many years ago on a warm day. It had been fine up till then, but suddenly had…login to view the rest of this post

I found a used set of OE discs that were like new, but warped them after an over-enthusiastic downhill run during a South Island trip. There are some…login to view the rest of this post

Barton wrote: Thu Aug 21, 2025 3:32 pm https://photos.app.goo.gl/t5FBgaXisqJuYeZeA
not bad copies

They look fine, Chinese? I fitted Brembo OEM discs…login to view the rest of this post

The pads I have, Brembo SR, certainly work better when they are hot, but not to the extent you describe. I doubt it's the discs as wet and dry followe…login to view the rest of this post

R1rider wrote: Thu Aug 14, 2025 11:11 pm Replaced the tyres with something different and not had any heatwave problems since.

What did you replace th…login to view the rest of this post

Looks like it definitely needed some TLC!

The main problems I've had with my 4xv have been electrical, it would pay to have a good look at all of t…login to view the rest of this post

I increased the swingarm length on my 4xv and it made a huge difference to getting the power down and reducing wheelies. It did slow the steering but…login to view the rest of this post

Yes, it will fit. The complete rearset assembly is different with drilled heel plates and on the right the m/c does not fit.

ThunderboltFMF wrote: Tue Jul 15, 2025 9:20 am Both my 5PW’s are now post crash.

Rebuild time once I am recovered.

That doesn't sound good. Take ca…login to view the rest of this post

120 rwhp seems pretty good. You might get more power with velocity stacks the correct length for peak power but then you'd probably lose midrange.

I…login to view the rest of this post

The switch on its own should be very close to zero. Check what your multimeter reads with the probes shorted and that is what you should measure.

It's …login to view the rest of this post

Welcome! Yes, they are still a great bike. Photos?

Welcome to the forum! I've never tried a full exhaust, but my understanding is you will get more power, but lose the smooth bottom end. Rejetting the …login to view the rest of this post

Welcome to the forum! There's a few 4xv owners here, I have a 99 that has done over 100,000 miles.

The multipin connector under the LH fairing cover has a different number of pins on the US bikes, so not a good option.

The 4xv is a great bike, but th…login to view the rest of this post

Best solution is flashing the ECU. Waterless coolants have different physical properties to water and are best avoided in high performance engines.

There are quite a few differences between the
electrics of the 4xv and 5jj. There may be more, but these are the ones I know of:
Ignition control un…login to view the rest of this post

I can check my 4xv if you like.

You might be best to buy a standard length chain and see what works. I went +2 on the rear of my bike and cut the chain to fit.

It may be tricky to …login to view the rest of this post

Welcome, it's pretty quiet here but a few of us still check in. There's a ton of great info here if you search carefully.

Did you check the compression first? Does it use oil? If they're both good, just check for cracks in the cylinders and reassemble it. These engines…login to view the rest of this post

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