New weaker spring almost same sag???

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

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.

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.

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

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

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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