[OveRReV]

racers use the 520 for weight reduction purposes but they replace them much often than 525 chains b'coz it has lower tensile strength & the sprockets have less meat in them so they wear quicker especially under severe use (like stunting), if you do some street riding & stunt more often then drop the 520 chain & sprockets & go 525 chain & sprockets you'll be much happier & so will your wallet.

i'm very happy with my 525 i resisted the urge to go the 520 conversion route, i want my chain & sprockets to last me 20,000kms or more before i get a new set, i clean & lube my chain regularly (every 500kms/350miles) & i have adjusted the slack every few thousand kilometers & that's the great thing about 525 as the 520 is more prone to chain stretch so you adjust it more frequently than usual.

 

[OveRReV]

btw if you lose any of the x-rings between the links then it's time to break out the wallet & buy a new chain, might as well go to an aftermarket 525 conversion.

 

[OveRReV]

Wurth High Performance Dry Chain Lube is the last thing you'll ever need for your chain, it scored the highest in the fling test, only 6% of the lube sprayed on the chain was thrown off & has high scores in the corrosion protection department. this was tested in RIDE magazine's chain lube test & it's the best buy of the bunch, other brands were tested as well including PJ1 which only scored average & wax based chain lubes scored poorly in the corrosion protection department.

it's colorless when it dries & you won't even notice it's there, i will be hunting for this when i hit the city.