Lightened Rear Brake Rotor

dpippin01 · Jan 24, 2011

The SV650 rear brake is too aggressive and if you're not careful can be locked up.

Very few use the rear brake and when you do, you really don't want it to lock up. By reducing the surface area, you lessen the outright braking power, thereby decreasing the chance that you will activate the "crash indicator" as the STT instructors like to call it! And since you're reducing rotation mass, you also make it easier for your bike to accelerate. Granted, it isn't a lot of weight loss but every little bit helps and especially in the wheel area.

I found a lightened rear rotor that was made for the GSXR series and it will fit on all 2nd generation SV650's

The GSXR rear rotors have been machined to make them lighter. For an older GSXR (2000-2003 version), you lose 1.19 pounds. On the 2004-present versions, you lose 0.805 pounds. These should fit 2001-2009 GSXR600, 2000-2009 GSXR750, and 2001-2009 GSXR1000.

Stock 2md generation rear brake rotor

Stock GSXR rotor. Even though the part number is different and mounting tabs are configured differently it will fit on a 2nd generation SV650

Lightened rear brake rotor.

Lightened rotor on SV650 rear wheel

Lightened rear brake rotor installed on SV650

If you're interested go to this
http://forums.13x.com/showthread.php?t=220458&page=2
and send a PM to jcivince.

Doug

RMAN · Jan 24, 2011

Interesting, but I didn't read any reviews of how the rotor actually performed while braking, mostly about appearances. You can also reduce the braking in the rear by cutting down the size of the pads or by using GG pads, organic compound or by installing a proportional valve. Lowering the brake pedal so you have to rotate your foot more will reduce the chances of over use. Of course, as you stated, you will reduce unsprung wgt with the lighter rotor.

DodgeRider26 · Jan 24, 2011

I would use it on the track but for my street riding I know the difference is negligible in weight savings, but a huge loss in braking factor. I wonder how much faster the brake rotor would be consumed if you chewed off that much material and then continued to use it as regular on the streets.

PainfullySlow · Jan 24, 2011

There is a rear brake?

SoylentGreenIP · Jan 26, 2011

I hit mine every now and then just make sure its working.

imdying · Jan 24, 2011

There are heaps of places to save weight on a bike.

Some of them aren't retarded.

This isn't one of them.

Nice for a never ridden show bike though.

If you want to improve your rear brake control, practice and get some skills, don't neuter your motorcycle.

That is all.

trace33chargers · Jan 25, 2011

imdying said:
There are heaps of places to save weight on a bike.

Some of them aren't retarded.

This isn't one of them.

You are right. Those people who buy forged or mag rims are dumb. Reducing rotating mass won't help you go faster at all.

Don't worry, once you hit the track you'll figure out what it's all about.

Flaerion · Jan 24, 2011

I intentionally bled IN a tiny bubble into my rear brake circuit... 30 second spent to get about 50% less braking power and still retaining, what I feel to be a crucial piece of braking function on any vehicle, the ability to intentionally cause wheel lock up. Oddly, the feel of the brake is about the same as it was before, even from one set of pads to another. Might as well not eff it up if you're gonna reduce its power.

One wrench, 30-60 seconds, and the cold beer is the only cost really.

TerrySchiavo · Jan 25, 2011

wow... we know who uses the rear brake too much via this thread.

jack_spyder · Jan 25, 2011

I got one last month for a christmas present for a friend and one a few weeks ago for my superstock bike. Very nice machining. jcivince is fast and very easy to deal with. You wouldn't believe the effort he puts into packaging those things. There is no chance of damage during transit. I wont know how it feels for another few months until I finish my motorcycle.

r3t1awr3yd · Jan 25, 2011

I don't think anyone else has said it but regardless of it's functionality, it looks cool.

Would I pimp it on my bike? Meh. I'm the idiot who uses the front and rear to stop the bike like they teach you in MSF. Since I haven't been to any racing classes to teach me otherwise

imdying · Jan 25, 2011

r3t1awr3yd said:
I don't think anyone else has said it but regardless of it's functionality, it looks cool.

**** skippy.

r3t1awr3yd said:
Would I pimp it on my bike? Meh. I'm the idiot who uses the front and rear to stop the bike like they teach you in MSF. Since I haven't been to any racing classes to teach me otherwise

It's tempting to get one just for photos, it's definitely a mean piece of kit.

SV650R · Jan 26, 2011

I have one on my SV650... It does reduce the ability to lock up the rear wheel... But it is still capable of producing enough stopping power...

In all honesty, when do you really use the rear brake?...

I use the rear brake, if I am coasting to a red light ahead... Or, to down shift when my hands are off the handlebars...

If I mean to seriously slow down, or emergency stop the bike... I rely solely on my front 320mm Brembo rotors, my Sumitomo mono block Yamaha R1 calipers, my Goodrich steel braided brake lines and my Beringer 20.6x14 ball bearing forged master cylinder...

I mean, How much braking can the rear wheel possibly do, if the rear tire is 1/2 inch off the ground anyway?

...Back to the Lightened Rear Rotor:

It reduces the possibility of locking up the rear wheel on a high traction situation... It allows you to be able to trail brake deeper into a corner without risking a highside... On low traction situations like sand, gravel, etc. You can still effortlessly lock up the rear wheel...

It reduces unsprung weight, helping not just acceleration... But improving traction... Reducing Gyroscopic effect, helping on handeling... How much it helps depends on total weight savings... Every oz. counts... 520 Aluminum rear sprocket and 520 chain will help some more... Lighter aftermarket wheels would help even more... Aluminum axles... Ti hardware... Every oz. counts...

Of course, trying to explain this to a person with dirt bike background or a long cruiser bike history... Would be like explaining a 16 year old girl that most credit cards indeed have a limit, and that all credit purchases have to be eventually paid back... They just can not understand or reason it!!!

Regards, Luis...

PS: There are far too many things that are stupid...

Upgrading a $3,000.00 dollars girls bike... To make it track worthy and school your buddies on their liter bikes certainly qualifies...

I am guilty of that pleasure!!! :naughty:

Jan Zoellner · Jan 26, 2011

SVXR650 said:
Upgrading a $3,000.00 dollars girls bike... To make it track worthy and school your buddies on their liter bikes certainly qualifies...

Find buddies that can actually ride their bikes.

Ciao
Jan

VARIABLE9 · Jan 26, 2011

dpippin01 said:
The SV650 rear brake is too aggressive and if you're not careful can be locked up.

Very few use the rear brake and when you do, you really don't want it to lock up.

WTF are you talking about?

RMAN · Jan 26, 2011

Glad to see that AZ still has plenty of cavemen who were thought to be extinct; The SV is a girl's bike? Get over it or buy a Sportster.

SV650R · Jan 26, 2011

Not just in AZ... These guys are effing everywhere... Yes, even in NJ!!!

New riders who get liter bikes and can't even ride them... But, think that the SV650 is a girls bike...

Luis

RMAN · Jan 26, 2011

Actually Luis I was referring to you since you seemed to view the SV as a girl's bike, maybe I just got the wrong inference from your post.

SV650R · Jan 27, 2011

No offense taken... English is my second language, and my sarcasm is not all that great...

The SV is called a "Girls Bike" to the lack of Horse Power... Luis

TerrySchiavo said:
50%? Arent you generous. More like 80% of the motorcycling public lacks good skill sets. On sportbikes its like 99%.

Yeah a little generous... I give everyone the benefit of doubt... Luis

rcannon409 said:
Of course, trying to explain this to a person with dirt bike background or a long cruiser bike history... Would be like explaining a 16 year old girl that most credit cards indeed have a limit, and that all credit purchases have to be eventually paid back... They just can not understand or reason it!!!

Regards, Luis...

Click to expand...

Luis, would you mind talking about this some more, because the comment is right on the money. I do come from a dirt bike background and locking up wheels is no big deal. Obviously there is a limit, and it sucks to do this on an icy surface, but otherwise I dont much notice, or worry abotu my bike sliding.

I do believe most of the "I had to lay it down" comments come from people who locked up the rear brake , so I can see the idea.

Sport Bikes rely heavily on traction... Unlike Dirt Bikes where the lack of traction is not as much of an issue...

Sport Bike Riders lean into the turns... Unlike Dirt Bike Riders where the bike leans but the rider remains upright...

Sport Bikes rely heavily in front brakes... Unlike Dirt Bikes where the rear brake gets used all the time...

Rear Brakes mid corner on a sport bike, is asking to lock the rear wheel followed shortly by an exceptional highside... Truly memorable way to total a motorcycle!!!

I do believe every "I had to lay it down..." To be an "I am an unskilled rider that panic and was unable react appropriately" ;D ...hehehe

To be a better Sport Bike Rider remember to do the opposite of Dirt Bike common knowledge... Luis

PS: Cruisers are like mopeds to hop from bar to bar... ;D ...hehehe

rcannon409 · Jan 26, 2011

Of course, trying to explain this to a person with dirt bike background or a long cruiser bike history... Would be like explaining a 16 year old girl that most credit cards indeed have a limit, and that all credit purchases have to be eventually paid back... They just can not understand or reason it!!!

Regards, Luis...

Luis, would you mind talking about this some more, because the comment is right on the money. I do come from a dirt bike background and locking up wheels is no big deal. Obviously there is a limit, and it sucks to do this on an icy surface, but otherwise I dont much notice, or worry abotu my bike sliding.

I do believe most of the "I had to lay it down" comments come from people who locked up the rear brake , so I can see the idea.

ghost6_9 · Jan 27, 2011

rotors look pretty solid to me, and definitely a good price. I sent him a PM, hopefully get myself one for this coming track season.

For those that are skeptics of lightened REAR rotors, go for a spin and do an emergency stop, 90% of your braking should be done with the FRONT, if do any more then feather the rear it will lock up (this means your skidding NOT braking).

And for those referencing a MotoGP bike, they do have lightened rear rotors.....they just happen to be made out of carbon fibre not metal........oh and that goes for the front rotors too

Making something lighter the stock doesn't make it bad or unsafe.

For those concerned with your rear brake rotor causing problems cuz of this please visit your local road course and take a advanced rider course.

And those getting all bent out of shape with Luis calling the SV a girls bike, chill out, he's just referring to many of those that don't ride an SV but are on 600SS or bigger. Yes it is very possible to be much faster on an SV then riders on SS bikes, rider skill plays a big part on a road course.

VARIABLE9 · Jan 27, 2011

And this explains why top level racers off season ride MX and flat track.

trace33chargers · Jan 27, 2011

Time on a bike is time on a bike. Plus it keeps them comfortable with a bike sliding around.

SV650R · Jan 27, 2011

Flat track is a great way to sharpen drifting on asphalt skill...

However, you do not see top level racers locking the rear wheel around corners...

Luis

VARIABLE9 · Jan 27, 2011

You do not seem to understand. Do you really think that all MX or or flattrack is just 'locking the rear wheel around corners'?

rcannon409 · Jan 27, 2011

Thanks for the explanation. I had a highside on my xs 11 when I was 16 and avoided having another for 30 years. What a horrible experience. The police. Said I flew 65 feet and landed on my head. I suppose being 16 was my defense as that head was brand new, never used.

I saw a dashcam video today where one of the guys I work with rolled a ford van on a ice covered road. The back of his van slide sideways, found the one dry spot on the road, and caught traction. I think this is the same idea as with the motorcycle. It was easy to see how the front immediately tried to fall into line with the sliding rear. That violent action rolled the van.

OreoGaborio · Jan 28, 2011

So he's got two patterns...

Standard is $65
Arrowhead is $90?

Is that right?

I really wish the guy did core exchanges... I'd send both of mine if I could get em both done for the price of one arrowhead.

tovar · Jan 28, 2011

When do you use to much brake or any mid corner??

OreoGaborio · Jan 28, 2011

I just want em cuz they're lighter & look pimp

tovar · Jan 28, 2011

Anybody. When do you use rear brake mid corner on sport bike? If deer jumps out?

VARIABLE9 · Jan 28, 2011

This is my point.

SV650R · Jan 28, 2011

I did not ask, Why do you need a rear brake?

I ask, When do you need to lock the rear brake, and slide the rear wheel?

The lightened rear rotor still brakes...

It just keeps the rear wheel from locking so easily...

Luis

PS: So if a deer jumps you want to lock the rear wheel... OK!!! ...Any front brake? Or you lock the front wheel too?

If you lock a wheel and crash is that the same as, "I had to lay it down!" ;D

tovar · Jan 28, 2011

If you lock wheel from braking to much and crash because of it you don't know how to ride bike or use brake.
If you use brake to its max performance than you do know how to and you will appreciate good brake.
With that said I never use rear unless I run of the track in dirt.

RMAN · Jan 28, 2011

just to throw my 1cent in, a slight drag of the rear brake mid corner will tighten the line as if you decreased the throttle without upsetting the chassis. Notice I said a "slight" drag. You have to be skilled and proficient in the use of both brakes to be able to get the most out of the braking system. And, you have to know how your own bike's brakes respond to braking at the limit. Most riders imo learn to brake at a certain skill level, then decide that's all they need to know. They don't practice in a lot at slower speeds to find that point of wheel lockup and how to respond. They don't know how much pressure it takes on their bike to lock up each wheel. This skill doesn't come naturally to most people. Not relevant to this discussion, but both Rossi and Stoner use the front and rear brake and throttle at the same time in certain corners on their 800 motogp bikes. Now that's skill. In nine years of riding my SV, I locked the rear once, the rear drifted, I didn't panic and the slow turn I was in was completed. This happened on a patch of gravel. It's fine that some people never use their rear brake at higher speeds, only at slow speeds or making a u-turn. But I feel that you should be skilled in using the rear at speed and understand the conditions for using the rear and that milling down a rotor to reduce brake force instead of learning how to use the brake is riding on crutches at best. I know plenty of cruiser riders who don't know how to use the front brake effectively, different end of the bike, same result from poor riding knowledge. The more you know, the safer you'll be.

Lightened Rear Brake Rotor

Top Contributors this Month

Recommended Communities