2008-2011 Ninja 250R 520 vs 415 chain + sprocket weight comparison
If you’re a racer, the 415 sprockets + chain is the way to go if you want to reduce rotating mass. If you’re a street rider, it would likely be more practical to go with a standard 520 setup. Just my two cents.
I purchased 415 sprockets from Aftermarket Cycles and separately ordered 2 DID 415 ER chains The chains come in 120 links and you need 134 so you need 2 chains OR order the kit. This setup is replacing my Pit Bull sprockets + DID 520 EVR3 setup. While the weight comparison you see is decent, if you switched from stock sprockets + chain to the 415 setup you’d drop a whole lot of weight.
Old Pit Bull sprockets + EVR3 setup:
Pit Bull front sprocket (14T): 5.4oz
Pit Bull rear sprocket (46T): 11.7oz
DID 520 EVR3 chain (108L): 3lb 10.9oz
TOTAL: 4lb 12oz
New 415 Custom sprockets + DID 415 setup:
Custom front sprocket (18T): 5.1oz
Custom sprocket (57T): 13.2oz
DID 415 chain (134L): 1lb 15.7oz
TOTAL: 3lb 2oz
DIFFERENCE: -1lb 10oz
NOTE: Keep in mind the stock chain + sprockets are much heavier than Pit Bull + EVR3 chain. Weight of master link on EVR3 chain not calculated, but would be minor.
If you want to purchase the 415 sprocket setup, you can puchase it here with (or without) the Tsubaki chain. Actual chain length is 134, so if you don’t order the kit with a Tsubaki you’ll be ordering 2 DID 120 link chains unless you can find someone who can cut one to 134 links.
415 Tsubaki SHT Hi-Performance Racing Chain: 2lb 9.1oz
Don’t take my word for it, here are photos!
My previous Pit Bull + DID 520 EVR3 race setup:
My new custom sprockets + DID 415 race setup:
The Tsubaki 415 shown below comes with kit & has a higher tensile strength vs DID:
Chain comparison: 520 EVR3 vs 415 Tsubaki vs 415 DID
