Gen2 Rear suspension help - Page 3 - Kawasaki ZX-10R.net
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post #21 of 39 Old 06-07-2018, 06:23 PM
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I've been thinking about just doing a Race Tech spring for my weight. Any thoughts?

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post #22 of 39 Old 06-09-2018, 04:11 PM
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I've been thinking about just doing a Race Tech spring for my weight. Any thoughts?

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Their springs are ok. But again, better options out there. Ohlins, K-Tech, Bitubo all make springs that are direct drop ins. What I mean is if you buy Racetech springs, many times you have to create/add new spacers because the new springs are different lengths. The other manufactures make a number of different spring rates that are the exact same size as OEM. So the only thing you replace is the spring, and nothing else.

Takes all the guess work out.

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Last edited by evallarta1; 06-09-2018 at 04:13 PM.
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post #23 of 39 Old 06-11-2018, 08:00 AM
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Originally Posted by evallarta1 View Post
Their springs are ok. But again, better options out there. Ohlins, K-Tech, Bitubo all make springs that are direct drop ins. What I mean is if you buy Racetech springs, many times you have to create/add new spacers because the new springs are different lengths. The other manufactures make a number of different spring rates that are the exact same size as OEM. So the only thing you replace is the spring, and nothing else.

Takes all the guess work out.
Good information here. Thank you.
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post #24 of 39 Old 06-11-2018, 02:05 PM
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Originally Posted by evallarta1 View Post
Their springs are ok. But again, better options out there. Ohlins, K-Tech, Bitubo all make springs that are direct drop ins. What I mean is if you buy Racetech springs, many times you have to create/add new spacers because the new springs are different lengths. The other manufactures make a number of different spring rates that are the exact same size as OEM. So the only thing you replace is the spring, and nothing else.

Takes all the guess work out.
Since i have done the Racetech Rear spring swap on a Gen 2 i can tell you, The Racetech spring is much shorter than stock. You will need their adapter collar to get it to work as well. Its not a hard swap to do though.

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post #25 of 39 Old 06-11-2018, 02:27 PM
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So, I don't know much about spring rates, but asking for some opinions from those that do.

My weight, without gear is 215 lbs. I ride street only.

Does this seem close, spring rate wise to what I would want?

http://store.ktechsuspension.com/sho...8x195-red.html

Can of worms, I'm sure.

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post #26 of 39 Old 06-11-2018, 02:49 PM
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Or maybe that's too light, and I should be looking at something like?

http://store.ktechsuspension.com/sho...8x195-red.html

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post #27 of 39 Old 06-11-2018, 11:29 PM
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People can get a little touchy around here when anyone talks
about suspension, keep in mind I know nothing like the pros that
hang out here, but...

I changed the spring on my Gen2 and just used the racetech calculator
to order the spring.

You didn't mentioned if you have ever rebuilt/freshened your shock?

Might be good time to have oil changed, nitrogen check, bladder repair
if needed. Shock dyno and have them install the spring while freshening the
shock.

Maybe "evallarta1" offers this service?

Or just get the spring and change yourself, not that hard to do at least you'll
be reasonably assured the bike is then sprung to your weight and tweak suspension from there.
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post #28 of 39 Old 06-12-2018, 08:55 AM
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The RaceTech calculator is what I've been using. I've been dieting and dropping some weight, and I like my rear a bit stiff, so I'm a bit on the fence about what to do.

And no, I have not rebuilt the shock in anyway. Bike has a little over 12k on it, so I didn't think I needed to, but maybe it's a time thing?

Last edited by evilaugust; 06-12-2018 at 09:02 AM.
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post #29 of 39 Old 06-12-2018, 11:21 AM
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The RaceTech calculator is what I've been using. I've been dieting and dropping some weight, and I like my rear a bit stiff, so I'm a bit on the fence about what to do.

And no, I have not rebuilt the shock in anyway. Bike has a little over 12k on it, so I didn't think I needed to, but maybe it's a time thing?
When I went to Race Tech school we had a conversation with Paul Thede about the RT spring calculator. Basically they spring towards the heavy side for people for a number of reasons. If I do need to use the RT calculator I usually go 1 or 2 rates lighter then what they recommend.

So if you walked into my shop I'd probably put you on a 9.8kg spring from RT or a 95nm from K-tech/Ohlins.

Also as some others have mentioned it may be worth servicing your shock. Generally for a street bike we recommend 10 to 15k miles.

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post #30 of 39 Old 06-12-2018, 11:24 AM
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Originally Posted by evallarta1 View Post
When I went to Race Tech school we had a conversation with Paul Thede about the RT spring calculator. Basically they spring towards the heavy side for people for a number of reasons. If I do need to use the RT calculator I usually go 1 or 2 rates lighter then what they recommend.

So if you walked into my shop I'd probably put you on a 9.8kg spring from RT or a 95nm from K-tech/Ohlins.

Also as some others have mentioned it may be worth servicing your shock. Generally for a street bike we recommend 10 to 15k miles.
As for servicing my shock, is this something I can or should do myself, or should I send it away?

Also, since I'm at that service interval, should I start thinking about servicing my forks too? And if I'm servicing my forks, respring for my weight?



For front springs would I be looking at 10.0nm, for my weight?

http://store.ktechsuspension.com/fro...air-13968.html

Last edited by evilaugust; 06-12-2018 at 11:54 AM.
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