JK Rear Crusher Flares Bolt-On Bare Aluminum Pair 17-05-010-ALUM Poison Spyder

In stock
SKU: 17-05-010-ALUM-PSC
Regular price $579.99 USD

These aluminum Crusher Flares are light weight - at only 9.6 lbs. per fender - yet durable. Like in the front, the original equipment rear flares are flimsy plastic which can tear off and are easily damaged on the trail. Poison Spyders Aluminum Rear Crusher Flares for JK are precision-fabricated replacements that are light weight and built to handle moderate trail abuse.

The Poison Spyder JK Crusher Flare provides tire coverage for up to a 40 inch tire (minor trimming of the inner sheet metal may be required for tire clearance). The Crusher Flares mounting plate is made of CNC laser cut 3/16 inch thick aluminum plate that has been brake-formed to fit the contours of the JKs flare mounting surface like a glove.

The Crusher Flare rails are CNC-bent 1.5 inch X .199 wall annealed aluminum structural tubing, with a fender surface made of 1/8 inch laser-cut aluminum plate. The Crusher Flare mounts using stainless steel countersunk flat head cap screws that provide a low profile, great looks and corrosion resistance.

Installation requires drilling and installation of the provided nut-sert fasteners. Poison Spyder supplies a simple nut-sert installation tool to facilitate the process. Crusher Flares are sold bare, un-coated. For added structural rigidity, Rear Crusher Flares come with a 4-piece Inner Brace Kit.

The Inner Braces are engineered to provide the internal structure to keep the Crusher Flares from deforming the Jeeps outer tub sheet metal on impacts. The components are laser-cut and brake-formed to precisely fit between the Jeeps outer sheet metal and the heavier gauge steel of the structural inner tub. The result is a Crusher Flare installation that will withstand serious hits from the rocks.

The .188 wall tubing and Inner Braces yield a lightweight aluminum flare that is stronger than any other aluminum flare on the market, and even stronger than steel flares that are not internally braced. Not sure whether to choose steel or aluminum for your Crusher Flares?

Aluminum is lighter in weight, so might be the best choice for those looking to save weight on their heavy JKs in order to improve fuel mileage and gain an advantage off-road. However, when wheeling with aluminum flares it is up to the driver to use more care and finesse, as the aluminum components are not going to be able to withstand the same direct impacts that steel can.

The outer tube on our aluminum Crusher Flares is beefy .188 inch wall thickness. Compared to our steel Crusher Flares which use .120 inch wall DOM steel tubing. The thicker tube wall recoups some of the strength lost by going to aluminum, however the steel versions will still be stronger in a direct impact with the rocks.

For reference, a steel JK Front Crusher Flare weighs 24.2 lbs. (not including hardware), while an aluminum one weighs only 9.6 lbs. Which is best for you will depend on your particular intended use of the Jeep, driving style and other factors.

  • 2007-2018 Jeep JK Wrangler, Rubicon and Unlimited 2-Door/4-Door
  • Lightweight at only 9.6 lbs. per fender, yet durable
  • Provides tire coverage for up to a 40 inch tire
  • Mounting plate is made of CNC laser cut 3/16 inch thick aluminum plate
  • Rails are CNC-bent 1.5 inch x .199 wall annealed aluminum structural tubing
  • Bolt-on application
  • Sold As A Pair


  • Poison Spyder Customs Part Number: 17-05-010-ALUM
  • Position: Rear
  • Fitment: Direct Fit
  • Finish: Bare Aluminum
  • Type: Tube Flare
  • Installation Type: No Cutting Required