Chains are strong, they have to be with the latest 200+ bhp monsters.
Care for a chain correctly and you could see 30,000 miles worth of life out of one. Only clean a chain with something petrol based, I use paraffin.
For the 929 I stayed with a 530 chain but 520’s are an option. The difference is the width. Race bikes generally have 520’s as they weighs less.
People think a chains there to connect the engine to the back wheel via sprockets. It is, but changing a chain and sprockets can have a huge effect on the bikes speed and handling.
For example, the 929 has a 16 tooth front sprocket and a 42 rear as standard. Honda decide this so it gives good acceleration, a nice cruising speed in 6th, an ok ish MPG, and for top speed.
Fitting a larger rear sprocket will give you more acceleration, but less speed. A smaller sprocket has the opposite affect.
I decided to only alter the rear sprocket, but I fitted a new genuine Honda 16 tooth front sprocket as they have a rubber bush on them to dampen any noise.
At most circuits you won’t get close to flat out in 6th gear. I wanted more acceleration so decided on a 44 renthal rear sprocket. I might even go one or two bigger in the future.
Choosing sprockets is a science though, make sure that when you divide the number of teeth on the rear to the front, you don’t get a whole number. This ensures that the links won’t hit the same point on the sprockets and will give you even wear.
On a road bike you’ll normally change both sprockets and the chain all at once. I’m not worried out the chains life on the track, so I’ll happily swap out the rear one only.
One thing people forget though is that changing the sprockets will affect the wheelbase. If you fit a larger rear sprocket the rear wheel will come closer the front, and therefore the bike will turn quicker, and be less stable at speed. Fitting a smaller sprocket has the opposite affect. You can combat this by altering the number of links in the chain but generally once a chain is riveted up people leave it alone.
Watch the below video by D.I.D for a step by step guide on chain fitting.
See the difference in the link pins? The pin to the right has been opened out to a specific width to stop the link plate coming off. The width changes depending on chain type. The head on the left is before the process takes place.