I am looking for heavier fork springs for my 93 MC 21. In particular I am looking for a 0.7-.09 progressing fork springs. The part number from Honda is 51403-NH3-761. No longer available from Honda Japan.

Conversly, I would take stock MC 21 R fork springs due to the fact that they have a higher rating than both the SE and SP models.

I am 192 pounds plus leathers and have already upgraded my rear shock spring to a 14kg and need to update the forks.

If you have any suggestions and or springs that would work for my application, I would really like to talk to you.

Thanks,

ponsone1

I am also interested mate i want to upgrade my stock springs with something hard if someone knows where to find can help!

thanks!

Check with Race Tech. They are your way and list springs for NSRs.

Cheers

Does anyone knows how to determine easy and at home what rate is our springs?

I recently bought sp forks and they told me it has hrc springs inside but i want to find out exactly how much rate it has in kg/mm as to find out if i can keep them or change them.

thanks!

I contacted Race Tech and they have springs for the MC 28, but not a MC 21. Race Tech did not realize the the MC 28 springs will not fit an MC 21. I am in the process of taking apart my forks, measuring the length and OD of the springs. They Race Tech will tray and match the springs with the charts of springs they carry.

Once I have gone through this process I will post the results so everyone has a reference to work from.

Please informed us sbout the price they giving..