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New weaker spring almost same sag???

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Just installed a new Honda 5.3 from the TT oem store, took out the stock 5.5.

Sag is about the same. 102 and 42, 155 pounds, 2004 crf450R.

Manual says 10-25 static. I'm so far off, what gives?

Have yet to ride it however it does feel a little softer.

Will this spring break in after it is ridden, if so how long will it take?

Thank you for your time

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The spring is still too stiff. At 155#, you need at most a 5.0kg. With the 5.3kg, you're not able to put much pre-load on it, that's why your free-sag number is so high.

Also, springs don't "break in". They are what they are. If it does break in (or rather, weaken or lose rate), it's a very low-quality spring.

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Just installed a new Honda 5.3 from the TT oem store, took out the stock 5.5.

Sag is about the same. 102 and 42, 155 pounds, 2004 crf450R.

Manual says 10-25 static. I'm so far off, what gives?

Have yet to ride it however it does feel a little softer.

Will this spring break in after it is ridden, if so how long will it take?

Thank you for your time

Some (or perhaps I should say most) new springs do this, and yes, they will settle down over time.

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they may physically shorten in length, but they will not change rate.

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I tried the calculators and thats where they put me (5.3 motocross). The manual says bike is set up for 150-160. I'll ride and check it again, I was thinking it will settle down a little. thank you

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It is not uncommon for listed spring rates to be wrong, that 5.3 you just ordered could very well test out at 5.4 or 5.5 or 5.0 or 5.1 depending. There's a reason you are getting the same numbers, and its not that the spring needs to be broken in.

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