I have the Rekluse left hand rear brake (LHRB) for my '06 450. It feels as firm as the front brake, not spongy at all, but while the front brake will lock up the tire at about 50% of the travel distance to the bar, the LHRB needs to be pulled about 90% of the travel distance to the bar. It gets very firm at about 50% of the travel and you think it will lock up the brake but it needs to be pulled in almost the rest of the way to the bar to skid the tire. I think this might be normal because the spinning mass is greater than the front tire, plus a couple of other reasons that I don't know about. I was wondering if getting a bigger brake line so that it holds more brake fluid would decrease the amount of pull on the lever until the wheel locks up.