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Avoid Harsh Suspension on your DRZ400

Harsh suspension on your DRZ400 is usually a result of poor shock maintenance or from old shocks that should be replaced. Harsh suspension is usually caused by a lack of lubricant in your shock boots or from having worn out shocks. Shock maintenance is crucial for competitive riders, it’s recommended to check the inside of […]

Harsh suspension on your DRZ400 is usually a result of poor shock maintenance or from old shocks that should be replaced. Harsh suspension is usually caused by a lack of lubricant in your shock boots or from having worn out shocks. Shock maintenance is crucial for competitive riders, it’s recommended to check the inside of your shock boots every other ride and to replace the lubricant every 10 rides/races. You stock shocks should last you several years of hard riding, but stock parts can sometimes suffer from excessive metal fatigue. Metal fatigue is result of constantly loading and unloading forces on a metal until its molecular bonds begin to weaken and the material becomes loses some of it’s elastic strength, making it more prone to buckling. Although springs are made to be compressed and released, the metal still has a life expectancy and will fail if you push it for too long.

When you start to notice that your shock springs “feel” different, even after cleaning and applying fresh lubricant, you know that your spring are beginning to show signs of metal fatigue. If the effects are especially noticeable then your springs are so fatigued that they’ve undergone plastic deformation so a shorter length, but that’s an extreme case. In either scenario, you should replace your shock springs and boot. For high performance and durability, we recommend these shock springs by Race Tech. Below are the spring specs from the manufacturer.

  • Quality springs that perform
  • Extremely accurate rates, Accurate to within .05kg/mm
  • Made of the finest chrome silicone wire
  • Shot-peened, heat-treated and preset (no sacking)
  • Outstanding stiffness-to-mass ratio
  • Chrome silicon, high stiffness-to-mass ratio, shot-peened, heat-treated and pre-set (no sacking)

If you’re replacing your shock springs it’s a good idea to replace the boots as well. They’re relatively cheap plastic parts that take a lot of damage for your springs. you might as well start with a fresh part, it’s a real shame to damage a $100 spring that lasts for years because you were too cheap to get a $10 plastic boot. Here at DRZparts.com we prefer durability over economy because it usually ends up being economical int eh long run. Check out our favorite boots by Fly Racing, specs below.

  • Protect fork tubes from dirt and debris
  • Extremely durable and flexible for a snug fit
  • Bubble Pack displayed

Sizing Information

  • Top Opening: 1 3/4″, 43mm
  • Bottom Opening: 2 1/4″, 56mm
  • Extended Length: 18″
  • Collapsed Length: 8″

Item # 38456
SKU #343025
Mfr. Part # 01080222

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