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Old 11-02-2017, 07:01 PM   #1
Norton 850
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Default Alternative Front Brake Rotor

Calling on the collective brain here:

My front brake rotor is worn beyond the service limit thickness of 0.177". So I'm considering a larger diameter replacement rotor that will hopefully provide improved braking performance. I want to retain my OEM brake caliper, so I'm looking at Eagle Mike's caliper adapter for use with larger diameter rotors.

The question is: which is the best rotor for use with the Eagle Mike caliper adapter?

I'm trying to avoid buying some cheapo mild steel rotor that will wear out in less than 10,000 miles.

Best,

Jason
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Old 11-02-2017, 07:38 PM   #2
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Default Re: Alternative Front Brake Rotor

As far as I know there are only two options, the EBC and the Tusk.
I run the EBC on my XR650L and it works just fine.
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Old 11-02-2017, 09:16 PM   #3
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Default Re: Alternative Front Brake Rotor

EBC offers or did offer two versions. EM now uses the newer version (non-gold center). Why not just purchase from EM?
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Old 11-03-2017, 07:11 AM   #4
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Default Re: Alternative Front Brake Rotor

Quote:
Originally Posted by Chuck B View Post
EBC offers or did offer two versions. EM now uses the newer version (non-gold center). Why not just purchase from EM?
Thanks for the suggestion. Without looking at his website, I mistakenly thought he offered only the caliper bracket.

Best,

Jason
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Old 11-03-2017, 09:43 AM   #5
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Default Re: Alternative Front Brake Rotor

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Originally Posted by Norton 850 View Post
Thanks for the suggestion. Without looking at his website, I mistakenly thought he offered only the caliper bracket.

Best,

Jason
He offers a number of options. I haven't checked recently but some of the brackets are listed in wrong area so a general search will bring the option you are looking for. For Gen2 owners the stock caliper works well. For Gen1 owners upgrading to the Suzuki caliper is nearly the same increase in brake performance as going from stock rotor to oversized rotor.
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Old 11-03-2017, 11:06 AM   #6
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Default Re: Alternative Front Brake Rotor

Yep, the EBC from Eaglemike is my suggestion. I went with a cheapy rotor first; big mistake!


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Old 11-04-2017, 12:21 PM   #7
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Default Re: Alternative Front Brake Rotor

Quote:
Originally Posted by DPelletier View Post
Yep, the EBC from Eaglemike is my suggestion. I went with a cheapy rotor first; big mistake!


Dave
What was the big mistake? I too need a new front rotor. Don't really want to change size, just looking for a descent replacement. From my perspective the KLR is not a performance bike. I just need a good replacement which will be smooth.
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Old 11-04-2017, 02:21 PM   #8
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Default Re: Alternative Front Brake Rotor

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What was the big mistake? I too need a new front rotor. Don't really want to change size, just looking for a descent replacement. From my perspective the KLR is not a performance bike. I just need a good replacement which will be smooth.
I think most upgrade the Gen1 primarily for safety. Performance just happens to go along with the upgrade. Stock size is just too small and ineffective compared to semi modern bikes, cars or even a FedEx truck. Gen1 front brake was decent in 1984.

Gen1 has two primary issues..too small rotor and single piston caliper. Going to a 320mm rotor more than makes up for the single piston caliper (compared to a Gen2) but stepping up to a dual caliper again raises the bar that much more. If you need a rotor at the very least swap in a 320mm rotor.

On my personal Gen1 I went a step further adding a modern master. Not quite as good as my other modern bikes but I have no worries about braking in either dirt or street.
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Last edited by Chuck B; 11-04-2017 at 02:24 PM.
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Old 11-05-2017, 04:46 AM   #9
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Default Re: Alternative Front Brake Rotor

Quote:
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On my personal Gen1 I went a step further adding a modern master. Not quite as good as my other modern bikes but I have no worries about braking in either dirt or street.
What did you replace it with?
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Old 11-05-2017, 08:01 AM   #10
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Default Re: Alternative Front Brake Rotor

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What did you replace it with?
Way back when, I had upgraded my 08 CBR1000RR with full brembo. The stock radial mstr unit was in my spare parts bin and turns out its a direct bolt on to the KLR. Technically speaking, a mstr designed to push two calipers doesn't work well pushing a single caliper (ratio of pressure/fluid) but in this case it works very well. I've done a couple other mstr upgrades that worked better than stock; gen 1 Concours and Versys. I've done a number of swaps to the Gen2 KLR mstr as well. Just about anything is better than the Gen1 mstr.
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Old 11-05-2017, 12:16 PM   #11
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Default Re: Alternative Front Brake Rotor

I put this on my 2009 KLR, big improvement. I also run the black Galfer pads and SS lines

Warp 9 Supermoto 320mm Brake Rotor Kit KLR650 '87-Current

New from Warp 9, a full floating 320mm Supermoto disc with caliper relocation bracket! These rotors have an additional hole for placement of a magnet for an electronic type speedo like the Vapor.

this is listed on Procycles website. About 164.95
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Old 11-05-2017, 08:20 PM   #12
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Default Re: Alternative Front Brake Rotor

I did the SV650 caliper with EBC rotor and EM adapter bracket. It required a bit of shimming beyond what EM supplied but that was a minor inconvenience and the improvement in stopping power is significant.

https://www.google.com/url?sa=t&rct=...VIAPeSzkaOiUDD

PS: You want the non-ABS SV650 caliper.
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Old 11-06-2017, 10:44 AM   #13
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Default Re: Alternative Front Brake Rotor

Quote:
Originally Posted by lhedrick View Post
What was the big mistake? I too need a new front rotor. Don't really want to change size, just looking for a descent replacement. From my perspective the KLR is not a performance bike. I just need a good replacement which will be smooth.
The big mistake was purchasing a chinese CZR rotor and twin piston caliper kit off ebay. In my defense, this was before the SV mod was developed. The kit was garbage with hardware store fence hardware and a chinese knockoff goldwing caliper and ninja master cyl. I thought the rotor looked OK and so I embarked on the process of making my own SV caliper adaptor to use with it (EM hadn't started making them) The first problem was the rotor was too thick and didn't have countersunk holes for the rotor bolts. I had to mickey-mouse it with a small shim and by grinding the rotor bolt heads to avoid hitting the caliper.

....after all that, it worked but then the rivits started to loosen off. By then I had purchased the EBC 320mm rotor and SV adaptor from EM for my other KLR and I knew they worked perfectly together so I bought a second EBC and mounted it on KLR #1; problem solved.

As far as Gen1 KLR brakes go......well, they suck, performance bike or not. I consider it as safety issue. If I was hung up on staying with a stock(ish) size rotor, then I'd go with the slightly larger Gen2 rotor and make a custom Gen2 rotor to SV caliper adaptor and have a front brake only slightly less powerful than the full meal deal 320mm/SV setup. There is a PDF available for that

Otherwise, just get a used stock replacement (shouldn't be too hard to find with all the KLR owners upgrading to the 320mm) and leave plenty of room between you and the vehicles in front of you.


2 cents,
Dave
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