I need a much stiffer (or progressive?) rear spring – what options have forum members installed?
Am riding far more gravel / rutted farm tracks than smooth tarmac – evidence attached – and with 105kg build + 15kg gear, the stock spring at max preload is still too soft.

p.s: I am new to new to motorcycling, so not sure what spring specs / brands / dimensions I'm supposed to search for. But I have worked on cars for years, so the job does not phase me. This is for a 2021 Svart 125, but the 401 sub forum is much more active with people modifying their bikes. Cheers!

Am riding far more gravel / rutted farm tracks than smooth tarmac – evidence attached – and with 105kg build + 15kg gear, the stock spring at max preload is still too soft.

p.s: I am new to new to motorcycling, so not sure what spring specs / brands / dimensions I'm supposed to search for. But I have worked on cars for years, so the job does not phase me. This is for a 2021 Svart 125, but the 401 sub forum is much more active with people modifying their bikes. Cheers!
