What is the best chain? - Kawasaki Z125 Forum
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post #1 of 14 (permalink) Old 12-22-2019, 05:28 PM Thread Starter
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What is the best chain?

I ask this question because I think the general consensus is that the OE chain is crap, I replaced mine with one from a trusted aftermarket brand and I have to say I am displeased with its lack of performance.

So, what are other using with good results? Probably more interested in the results with bigger bore or higher HP engines and heavier riders.

Discuss........

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post #2 of 14 (permalink) Old 12-22-2019, 07:43 PM
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420 aftermarket chains even from the best name brand suppliers can be only rated for 80/cc Max size engines. As well as offer a 420 chain rated for 150/cc engines. (picS)

Did you order and/or get the right chain ?
Exactly what 420## chain and brand did you get if i may ask

Most all chains under 2500 tensile strength (stock chain) stretch quickly
Most chains over 5000 tensile strength will hardly stretch at all

DID420NZ3 & RK420MXZ are my 2 favorite choices
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post #3 of 14 (permalink) Old 12-22-2019, 07:49 PM Thread Starter
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Quote:
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Exactly what 420## chain and brand did you get if i may ask
Pretty sure it was an RK420SO, obviously not the same spec level as the MXZ

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DID420NZ3 & RK420MXZ are my 2 favorite choices
I'll make sure I get one of those next, pity @mnnthbx don't have any 30 tooth (OE size) sprockets in stock.

Thanks for the info
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post #4 of 14 (permalink) Old 12-22-2019, 07:52 PM
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Quote:
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Discuss........
Tensile Strength vs Wear Factor...
Tensile strength importance is mostly for high HP performance bikes. Very few chains ever break on smaller HP bikes. Most chains will go past there stretch replacement limit before they break. The ones that do break are typically from lack of maintenance or adjusted wrong. But Tensile Strength does typically dictate the Wear Factor as well, The Wear Factor is more important when buying a new chain. Most quality chain manufacturers include the Wear Factor in there spec' charts. Your not saving money when buying a cheep chain, it's actually more costly in the long run and not so much do to you have to buy 2-3 cheep chains to last as long as 1 quality chain, but because cheep chains with low Tensile Strength or low Wear Factor numbers have rapid chain stretching and wears out your sprockets faster and those are more expensive than chains.


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post #5 of 14 (permalink) Old 12-22-2019, 08:31 PM Thread Starter
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I think I'll get the RK 420MXZ in gold next. Thanks @Kaw'ee
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post #6 of 14 (permalink) Old 12-23-2019, 12:22 AM
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I don't run a sealed chain on the Z125. I do strongly believe in the RK brand though and am currently running a non sealed RK.

I have the RK MXZ on my ZX10 and it's wear (or lack thereof) is impressive.

Can't go wrong with RK!

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post #7 of 14 (permalink) Old 12-23-2019, 09:01 PM
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I'll make sure I get one of those next, pity @mnnthbx don't have any 30 tooth (OE size) sprockets in stock.



You still have a spare right?
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post #8 of 14 (permalink) Old 12-25-2019, 07:59 PM
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I also believe I'll be replacing the chain on my bike in the spring. After about 3500 miles it is pretty well adjusted out. My question is this though... In any other circumstance where the chain actually stretched at an understandable rate, I would replace the sprockets with the chain. However with such little actual miles on the bike, does anyone feel strongly either way as far as replacing the sprockets with the sprockets vs just replacing the chain?
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post #9 of 14 (permalink) Old 12-26-2019, 05:11 PM
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If a chain is badly stretched, the sprockets are shot. Don't waste the time and money putting a new chain on worn sprockets. Replace everything with high quality parts.
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post #10 of 14 (permalink) Old 01-01-2020, 04:54 AM Thread Starter
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You still have a spare right?

Yes, yes I do. I will need a new front though. Chain should be here in the next few days, that should give me like 1 full HP, watch TF out then

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