www.YamahaR.co.uk

I did left the radiator cap off, the coolant start to fill up and poor out, something normal?
If that happens, then you put the cap on, let it warm up, then check the level again after it cools down.

On my bike, normally some air bubbles come out soon after start-up. I top it up, put the cap on ...

I got a Pirelli Diablo 190/50 17 through the post , but delivered to Stan`s workshop , for £99 ....... from a shop called Demon Tweaks , who I`ve dea…login to view the rest of this post

I don't know about the 14b specifically but my 4xv is the same. There is usually some coolant left in the engine and radiator after you empty through the drain plug.

When you refill, leave the radiator cap off until the thermostat opens in case any air is trapped in the system.

Two punctures in 15 years but the last one was really scary. I was riding with a group and we had stopped for coffee. The bike felt fine when we rode …login to view the rest of this post

Have you got resistors on the rear indicators as well? Check the wiring, it sounds like something isn't right with the circuit for the resistor to see that much current.

BTW ... The thing I mentioned earlier about the fuel and oil level lights coming on momentarily happens on the red / white as well .... So it may be …login to view the rest of this post

My 4xv has always used some oil, 200-300 ml between services. I fill to halfway between the dots and check the sight glass as the oil level light seem…login to view the rest of this post

Jj27 wrote: Wed Sep 24, 2025 6:33 pm My r1 4xv is blue .. and a money pit and after two years still in a million bits . Nearly there tho .. nex

…login to view the rest of this post

BTW .... how`s your 100,000 mile 4XV going on ? ...... I believe the kill switch issue has finally been put to bed now ?

Tony

Still going well. The k…login to view the rest of this post

Thanks for that info.

How many miles has it done, and how did the cylinder bores look?

Have you checked the service manual?

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