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Slower than you!
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Probably posted before but I weighed some of the parts prior to doing the 520 conversion.

All weights per the local post office scale.

116 link RK GB530GXW as a representative 530 chain (it's the one I had in my stash of spare parts). New in box. Box and packaging included in the weight. 5 lbs 11.2 oz or 91.2 oz.

120 link DID 520ZVM2 as my chain of choice. New in box. Box and packaging included in the weight. 4 lbs 9.3 oz or 73.3 oz. Rough adjustment for 116 link equivalent = 73.3 oz x 116/120 = 70.86 oz. I'm sure there are lighter 520 chains...I wanted a strong one.

Because of the larger rear sprocket, I chose to cut the chain down to 118 links instead of the stock 116 links. 116 with that big a rear sprocket would have been pretty tight. Maybe TOO tight.

Chain savings = approx. 20.3 oz or 1 lb 4 oz.

I went with Supersprox mostly 'cause I know the guys that make this product. Drive Systems sells a black version that I thought was pretty cool. I chose a 16/45 combo (that's a stock front, +3 rear). Sadly, the weight savings is about nil. The 45-tooth Supersprox rear was 1 lb 6.9 oz or 22.9 oz while the 42-tooth stock rear was 1 lb 5.4 oz or 21.4 oz. Adjusting (roughly) for the increased rear size makes the Supersprox version about what a factory 45-tooth would weigh.

Stock final drive ratio = 42/16 = 2.625
New final drive ratio = 45/16 = 2.8125. 7% higher than stock.
Popular -1/+2 final drive ratio = 44/15 = 2.93. 11.7% higher than stock.

Pic of the rear sprocket included. Yes, I know that the picture shows the lock nut as not being secured. Secured before I rode, of course.
 

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Interesting. I just did my 520 conversion this weekend and weighed everything too.

Here is what I found (I weighed everything in grams, so the standard weights are a conversion from metric):
Stock 530 D.I.D chain=2315 grams or 81.66 oz
520 D.I.D ERV3 chain=1814 grams or 63.99 oz
Chains were weighed by themselves with the master link

Stock 530 16t Front Sprocket=268 grams or 9.45 oz
AFAM 520 15t Chrome-moly steel drilled Front Sprocket=186 grams or 6.56 oz

Stock 530 42t Rear Sprocket=612 grams or 21.59 oz
AFAM 520 44t Workslite Hard Anodized Rear Sprocket=255 grams or 8.99 oz

Total weight savings= 940 grams or 33.16 oz or 2.0725 lbs

So a pretty good amount of rotating mass shed :thumbsup:
And even more was shedded (294 grams or 10.37 oz) thanks to my lightened rear brake rotor that I installed when I did the 520 conversion. Thanks Luke (lhintze).
 

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Looks good with the new sprocket.

Ive done a 520 conversion on my gsxr600 stunt bike but id worry about doing it on the blade.

Talking to an amazing rider last night who just got his GSXR1000 K7 back after the chain snapped and it took off the passenger peg, cracked the sub frame, then wrappen itself around the front rotor until it grew so big the chain cracked the engine cassing and it spilled it fluid.

Anyone heard of 520's snapping or do you recon they are as strong?
 

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Looks good with the new sprocket.

Ive done a 520 conversion on my gsxr600 stunt bike but id worry about doing it on the blade.

Talking to an amazing rider last night who just got his GSXR1000 K7 back after the chain snapped and it took off the passenger peg, cracked the sub frame, then wrappen itself around the front rotor until it grew so big the chain cracked the engine cassing and it spilled it fluid.

Anyone heard of 520's snapping or do you recon they are as strong?
I think it all depends upon the quality of the chain you get. The 520 D.I.D ERV3 is a very strong chain and plenty of blade owners use it.
 

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^Most of these 520 chains (the good ones from RK, DID and EK) actually have more strength than the stock 530. The most important thing is chain preventive maintenance. Without pm checks even a 530 will snap.
 

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Looks good with the new sprocket.

Ive done a 520 conversion on my gsxr600 stunt bike but id worry about doing it on the blade.

Talking to an amazing rider last night who just got his GSXR1000 K7 back after the chain snapped and it took off the passenger peg, cracked the sub frame, then wrappen itself around the front rotor until it grew so big the chain cracked the engine cassing and it spilled it fluid.

Anyone heard of 520's snapping or do you recon they are as strong?
The only one i have seen snap was a non o-ring, very light, maybe MX duty, if that. The guy was trying to save friction losses, snapped one lap into a practice session, I do not know about adjustment, slack etc. Took out his cases on an old(97 maybe) gsxr 600.
 

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Interesting. I just did my 520 conversion this weekend and weighed everything too.

Here is what I found (I weighed everything in grams, so the standard weights are a conversion from metric):
Stock 530 D.I.D chain=2315 grams or 81.66 oz
520 D.I.D ERV3 chain=1814 grams or 63.99 oz
Chains were weighed by themselves with the master link

Stock 530 16t Front Sprocket=268 grams or 9.45 oz
AFAM 520 15t Chrome-moly steel drilled Front Sprocket=186 grams or 6.56 oz

Stock 530 42t Rear Sprocket=612 grams or 21.59 oz
AFAM 520 44t Workslite Hard Anodized Rear Sprocket=255 grams or 8.99 oz

Total weight savings= 940 grams or 33.16 oz or 2.0725 lbs

So a pretty good amount of rotating mass shed :thumbsup:
And even more was shedded (294 grams or 10.37 oz) thanks to my lightened rear brake rotor that I installed when I did the 520 conversion. Thanks Luke (lhintze).
Did you add two links to the chain on this combo?
 

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