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I have been having the same weak brake / lever travel / double-pump issue on my '17 Thruxton R pretty much since I got it, and been following this thread (lurking) for a while. Finally I've gotten to the point where I won't ride it until it's fixed, so before I put down the money to rebuild the system myself, I decided to re-read the recent posts. I put in the NHTSA report, emailed Santiago Maldonado ( [email protected] ) at NHTSA with the problem and a .pdf copy of the complaint.

He called me 2 hours later to get more information. He says there is something like 40 complaints now, they are investigating, and he said there has been communication with Triumph. If you have not already put in your complaint, do so ASAP. The more information they have on the issue the better. I've also volunteered to have my Thrux sent up to Ohio for testing if necessary.

Santiago seems genuinely interested in resolving this issue. Give him the info he needs to help us all.
 

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I heard from Santiago about 2 hours after I put in my complaint on the NHTSA site about a month ago, and he was still in the process of finding enough data, and working with Triumph to figure out if there is a problem that needs to be addressed. I'm paraphrasing, but that was the gist of it.

However I did get a call from my local Triumph dealer near Atlanta this past week, and someone from their corporate offices asked that I bring my Thruxton to the dealer to have a look at it. I dropped it off this past Saturday. It seems like something is happening between NHTSA and Triumph, since I had not contacted Triumph or the dealer about the brake issue. When I have more information about what the dealer finds I'll update the group.
 

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Is your bike still under warranty???
My dealer has not called me at all, even after putting in the claim 3 years ago.
I remember they comp the 2 brake flush few weeks after warranty expired. I have no receipts, because dealer said it was "comp".
Yes - I bought the extended warranty, though the service manager didn't know that when I dropped it off. He mentioned something about a 'goodwill warranty' if they found something wrong, so he obviously had not checked yet. However, I did not bring the bike in on a warranty claim, and had not even contacted the dealer directly. The dealer called me after the Triumph corporate technical people contacted them to have the Thruxton brought in for a look. So I guess NHTSA must be working with Triumph in some way, and Triumph wants to have a look for themselves.

I am just outside Atlanta, which is where the corporate offices for Triumph are (I think), so maybe that has something to do with it.

Really I don't expect much to come of it. There's no way in hell Triumph is going to foot the bill for the proper pistons, new seals, and the labor to put it all together. They'll probably bleed the brakes and call it good, which of course it won't be. A couple rides (and some brake pad wear) later it will be back to the same old over-travelling lever. I've bled the brakes myself, including the ABS on this bike before, and that's exactly what happens. It's a temp fix at best, cleaning and lubing pistons might help a bit more, but it doesn't solve the issue.

I fully expect to be putting down the $$$ on new coated stainless steel pistons and a seal set. And I'm kinda ok with that, because $500 to fix the brakes is way cheaper and less painful than crashing.
 

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Update on my '17 Thruxton. The dealer has had it for a month, and they are finally to the point they are ready to start road testing it. Weather has been kind of rough here, so hopefully they'll be getting it on the road this week. I know they rebuilt my calipers and replaced the master cylinder, but not sure if the pistons were included in the rebuild. I'll have to wait until I pick it up to find out. I'll update the thread when I know more.
 

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I would say that if the same OEM pistons are used when they rebuild the caliper, than it is likely that the same problem will develop. Thought it was worth a try to see if Triumph can figure out the problem and fix it, but if they don't I'll just do it myself.

From talking with the service manager I get the impression that they're sort of taking the shotgun approach with the issue - change everything and hope something fixes the issue, rather than really finding the root cause and addressing it. I really tried to impress on him the issue with the aluminum pistons when I dropped it off, but I think that Triumph is calling all the shots on this one, not the dealer. So if they're replacing parts they're probably using Triumph OEM, and unless Brembo has made a design change in the caliper or pistons they are supplying, I'm likely going to get the same pistons it originally came with. Likely that they'll replace everything, put new pads in, ride it 50 miles and say that it's working just fine. Then I'll ride it 1000 miles, wear in the pads, and have the same issue all over again.

Not sure that the troubleshooting methodology is working very well on this one from Triumph's end. That said, I'd like to thank all the folks on this board to did a great job troubleshooting and finding the true cause of the braking problem. Well done!
 

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Well I got my '17 Thruxton R back from the dealership on Saturday. They rebuilt the front calipers and replaced the master cylinder after replicating the issue (stated on the invoice). The parts listed on the invoice were Triumph parts, and the pistons were the standard OEM grey pistons. The brake feel was marginally improved, but I can tell it was more from having put new pistons and seals in and 'resetting' the piston position than an actual fix - similar to what would have happened if I'd just moved the pistons out, cleaned and lubed them. I'm guessing a few miles down the road and some brake pad wear and I'll be right back where I started.

My initial squeeze on the brake did not go as far to the handlebar as when I dropped it off, but still travelled more than I would expect. A second quick squeeze (that double pump we're all talking about) was marginally firmer, so the symptoms are still there.

Not like I had anything to lose, I don't ride it much in the winter and they covered everything on warranty. Not overly upset with the dealer or service department, they did what they could. I made it clear when I dropped it off that replacing the original pistons with new OEM wasn't going to work. But the service department is limited by what they are allowed to do. They're only going to replace OEM with OEM when doing warranty work. Until an actual recall is issued for a defective design, this is what we're getting from Triumph.

Time to rebuild it right myself with the proper parts. Thanks to everyone on here who has contributed to finding the true root cause and proper fix to the brake issue. Looking forward to having the premium brake system that I paid for when I bought the bike new. Hopefully one day the guys at Triumph or Brembo will figure it out.
 

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Please save the invoice. Once I decide to move with the legal letter, could I get an invoice copy with your personal info redacted, if you don't mind? I would use it as evidence of what Triumph is doing and their crazy request for me to returning to OEM.
Thanks
Got it by email, so no problem. PM me your email address and I'll send it to you.
 

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Strange that Triumph NA is getting involved in all these so-called fixes, yet the methodology is different in each case. Sort of disconcerting that a single strategy to troubleshoot and find a root cause is not being employed.

My dealer rebuilt the calipers and replaced the master cylinder, did nothing to investigate the ABS. But they also said after the work was done that the problem was gone, which it is not. I know my motorcycle, and I know the difference in pressure between 2 consecutive brake pulls, and even in the first few miles I rode after getting it back I can tell the issue is still present, though less than before. It's likely not as bad because they disassembled everything in the caliper, essentially resetting the 'home position' of the piston, if you could call it that.

The real test is whether the problem comes back after a reasonable amount of mileage - enough to have brake pad wear. A squeeze or two in the dealer's workshop is likely not enough to say the problem is gone. Looking back at some of the early posts there was some measure of short lived success by cleaning and lubing OEM pistons and reassembling. But the problem always came back.

Not saying that the ABS is not an issue - it could be. I hope they do find something, because my dealer certainly did not. They just shotgunned solutions and said, "All better!" and sent me on my way. Keep us informed of their progress, Philly! I'm going to install the race pistons too - but if there are additional issues with the system we all need to know.
 
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