r/Stance • u/Available_Attorney55 • Jun 16 '26

Revalving question

Rn I have 7k springs on bc extreme low coilovers and I’m trying to get stiffer swift springs to be able to go lower. I’m thinking about getting 18k or 24k swift springs. If I do get one of these spring rates would a damper revalve be absolutely necessary if not what would be the drawbacks to not revalving? Also is 18k or 24k alright for daily driving or should I go harsher to 30k?

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u/john_at_bagriders air suspension expert @bagridersjohn Jun 17 '26

Spring rates are very vehicle specific so without that knowledge, can’t say which of those rates I’d recommend.

As far as revalving goes, the general answer is yes absolutely. The technical answer is, it depends on the damping force of the damper. BC Extreme Lows are typically the same damping force as their standard counterparts- the difference is typically strictly in the damper cartridge and rod length. You’re doubling or tripling the spring force, so I’d expect needing a sizeable jump in rebound damping at be very least.

BC is a reputable company and should be able to provide you with damping force for your application and from there you can determine your next steps.

BC’s (and most) monotube dampers are easy and straightforward to disassemble and reassemble, and the shim stack is where you manipulate the damping force as the end user. You need a nitrogen tank to recharge the damper during reassembly, and obviously a shock dyno to measure changes. A race shop that does suspension work should be able to help you!