With years of competition testing and more top place finishes then we can count, Spidertrax Ultimate Floater Axle Shafts have quickly become the #1 full floating axle among top rock crawling and rock racing teams. Axle shafts are sold individually (single). Lead-times vary, for an accurate ship date prior to ordering please call or email. Because axle shafts are custom made, payment is taken in full at time of order and orders are non-refundable. But what makes Spidertrax axles outperform the competition in ALL areas of quality, strength, and price? Here is a list of key advantages on what makes our axle shafts stand out from the crowd: Spidertrax start with only the finest US grade 300M billet chromoly and carry out all CNC manufacturing operations in-house, in Colorado USA. This allows them to provide an unmatched level of quality control while passing significant cost savings on to you. All heat treatment is done after machining and never before. This provides far more strength than simply working with pre-heat treated material, rough cutting some splines, and calling it good. After heat treatment, Spidertrax perform a deep freeze, or a Cryogenic freeze as it is commonly called, to the 300M material. They use a superior method for deep freezing that goes beyond simply cooling the part. After the axle shaft is heat treated, it is heated back up to a critical temperature at which point it is immediately deep frozen. This entire process improves the molecular structure of the axle shafts and has been a proven technique, when done correctly, in improving shaft strength and longevity. For those wondering why the 300M versions of these shafts are more expensive than the 4340 counterparts, this process, plus raw material cost, is the reason why. Spidertrax turn down the entire shaft so the shaft diameter is smaller than the major diameter of the splines. This provides two key advantages. First, by choosing the correct shaft diameter they allow for an ideal amount of shaft torsion, critical for overall shaft longevity. Second, the axle shaft splines are protected from taking the full load on the shaft, in-turn making the splines much stronger. Anyone who has seen twisted splines on a shaft that has not been machined down like theirs knows first hand what a difference this can make. If youre building a complete Spider 9, we know exactly what components youre running and how they are all designed to work together. Therefore, Spidertrax can make sure your shafts fit perfect in every way, they cover all critical areas, commonly missed by their competition, such as proper snap ring location and corrected adjustments in shaft length based on locker choice. Spidertrax are tooled up to manufacture shafts up to 50″ 1270mm in overall length. When building your Spider 9 axle, it is easy to calculate your axle shaft lengths using an Excel spreadsheet called the Spider 9 Housing & Shaft Calculator. This Excel spreadsheet can be downloaded online by clicking here. All parts come with a Limited Lifetime Warranty, so you are covered for life from defects in material and workmanship. When ordering your Spidertrax Pro Series Floater Axle Shaft, please refer to the drawing below when entering in your measurements for options Sa or Sb. The unit of measurement is inch and this number should be keyed in using decimal format. There should be an illustration here that has dropped off the Spidertrax website. As mentioned above, we offer an Excel spreadsheet called the Spider 9 Housing & Shaft Calculator which makes it easy to figure out your shaft lengths when running Spider 9 components. This Excel spreadsheet can be downloaded online by clicking here. Spidertrax Pro Series Floater Axle Shafts are designed to be sealed using the Spidertrax High Performance Oil Seal Kit. They are sold and priced as a pair. All aspects of these axle shafts, from design to manufacturing, are proudly done right here in Colorado, USA. PRICED PER SHAFT (SINGLE).