Re: new chain needed cbr 929? (with pics)
personally the vx2 wouldnt be my first choice, but i suppose itll suffice. its rated for 750cc, but i would say the 929 and most modern 750cc sportbikes both produce around 120ish rear wheel hp.
id still recommend the gold version for a few pound more. as mentioned they resist rust much better than the plain steel. something youll notice quickly even if you take good care of the chain. paticularly when you store the bike over winter.
im kinda confused why you would drop the pitch to 520, something thats only benefit is a very slight weight reduction. which in turn creates a very slight acceleration improvement.
on the race track where you slow down, then accelerate out of several corners this slight boost in acceleration can cut a few .00ths off a lap time after you multiply it by the number of turns on a track.
however, street use... its not like your trying to shave off five hundredths ofa second on your trip to the corner store, or even through your favorite canyon. its a small difference, but at a cost....
obviously the cost of dropping to a 520 pitch vs the oem 530 is longevity. the 520 is going to wear out faster. less metal doing the work of more.
whats most confusing about the setup youve listed is youve combined a 520 pitch chain with a -1 rear sprocket. which means your bike will have a decrease in acceleration vs the stock 16t front and 43t rear. so the only advantage to dropping pitch to 520 is now null n void because of the sprocket choice.
its more common people drop -1 on the front sprocket with a 520 kit to try and increase that small amount of acceleration in combination with the 520 chain. but dropping a tooth in the rear will cancel out any acceleration you would have gained with the 520 kit.
if you want to maybe lower rpm for highway cruising a better option would be add +1 on the front sprocket. its a change thats less dramatic. -1 on the rear is like adding +2.75ish on the front sprocket. closer to 3 than 2. its going to be a reduction in acceleration you will notice for sure. so just doesnt make sense to combine a 520 pitch kit and a -1 rear sprocket.
the 108link chain should still fit with a -1 rear sprocket.
did is a respectable name in chains. i used renthal sprockets many times on my dirtbikes and they held up well. ill say as well the aluminum rear sprocket wont last as long as a steel sprocket. paticularly in a 520 pitch where a 530 is oem. just something to be aware of.
ill say im currently running a 520 kit with an aluminum rear sprocket on my 954. i got a killer deal on the kit and probably like you, at least wanted to see what the deal was with a 520 kit. im going back to the 530 all steel as soon as this set is done. im at 10,000ish miles now and it wont be much more. the difference in acceleration is negligible and doesnt justify the decrease in life.
edit: just did a quick look around after re-reading your op. and oddly enough the oem tooth count in the us is 16/43 but looks like over there the oem is 16/42 so excuse my ignorance on that subject. not really sure why it would be different here vs there. ?
"love is the feeling you get when you like something as much as your motorcycle."-Hunter S. Thompson
Last edited by 954Kevin; 09-07-2017 at 6:57 PM.