All new Drive Systems X2 Ultra-Lightweight Rear Sprocket.
Ounces above the weight of a hard anodized alum rear sprocket. MotoGP derived technology.

chain kit
https://www.motomummy.com/store/product.php?productid=18813&cat=601&page=1

sprocket
https://www.motomummy.com/store/product.php?productid=18812&cat=271&page=1


https://www.motomummy.com/store/images/P/x2500-01.gif

Awesome! I think I've found my next sprocket.

Awesome! I think I've found my next sprocket.

:stpd:

I see that is a 520. Does it also come in 530?

IDK but that system in the 520 kit is badass.:fact

question, if running a 520 kit, with stock gearing, would i still need a speedo healer?

the R1 stock teeth count is 16/43 ?

question, if running a 520 kit, with stock gearing, would i still need a speedo healer?

the R1 stock teeth count is 16/43 ?

No, you would not

No, you would not

Cool, thanks

You only need a SpeedoDRD if you change your gearing around. Even then it's not needed unless you want your speedometer/odometer to be accurate, then you would need the SpeedoDRD to correct it.

Hey Corey if you un plug the battery is there a need to reset the speedo DRD, or does it hold its memory?

Corey, I was thinking about going with this sprocket for my next change, but I found this http://www.gixxer.com/forums/showthread.php?t=298390. It's cool how the situation was handled, but I'm curious if there was any further investigation where the OP sent out the sprocket, or did it stop there?

I would recommend the Driven superlight steel sprockets for now. We don't have a solid reason as to why this happened, but it's the first steel sprocket i've ever seen this happen to.

Thanks, PM'd you.

I don't see this kit offered for any yamaha's in the link. Any reason why?

We discontinued them for a wide variety of reasons. I would not recommend them.

Go with the Driven evo spec superlight steel chain kit. We haven't had one issue with them.

We discontinued them for a wide variety of reasons. I would not recommend them.

Go with the Driven evo spec superlight steel chain kit. We haven't had one issue with them.

I bought this sprocket kit from you a little while back...your making me nervous can you PM me the details as to whats up, Im not in the postion to buy another sprocket at the moment but dont exactly want this one coming apart on me either....Thanks Corey

wow that was an interesting failure on that sprocket

I would recommend the Driven superlight steel sprockets for now. We don't have a solid reason as to why this happened, but it's the first steel sprocket i've ever seen this happen to.

What is going on with the X2 for R1's? I really liked the look of it.

Hate to resurrect an old thread, but I see MM still carries these. Have the issues been worked out? Trying to find the lightest steel sprocket that's not going to fail like in that gixxer.com link.