The downfall of the DNM volcano is that it is too soft and dives under high speed hits. It bottoms out easily on big jumps or landings. It wallows in hard turns and you loose tracking of the front wheel due to the the fork leg sitting too low in its travel, causing the geometry of the bike to deform.
The rear shock is adjustable because you can replace the coil spring with any other sized spring. Unfortunately the DNM Fork does not have available heavy rate springs, until now. After extensive testing and tuning of the damper system, we came to realize that the spring rate of the coil is too low and we need a heavier spring rate for this fork to work properly with this type of bike.
Here's the real problem: The stock existing coil that comes in the DNM fork is a 31LBS/IN coil! This wouldn’t even suffice for a normal sized person on a downhill bike, let alone a 120+ lbs electric bike. That’s sprung weight!
Combined with the heavy re-valve of the DNM damper cartridge, the 55LBS/IN coil spring we have developed should complete the tune for this fork.
- Our new coil gets complete travel without a harsh bottom out on the elastomer bushing that come in the original setup.
- It ramps up properly due to it being one single coil instead of three, making the elastomer bottom out unnecessary.
- You can get full range of your Preload adjustment without loosing any precious travel. (chart 2 and 3 compared to the orange stock measurement)
If your DNM is a bit disappointing, but you don't want to spend $1000+ on new suspension, this SurRon-specific spring is the easy answer!
If you want us to install it for you, plus tune and completely overhaul your fork to get its absolute best performance, try this
YouTube installation/tutorial coming soon!