Viper Horizontal Spinner Titanium Blade 5.5″


This double-sided weapon bar can be used for horizontal spinners or really big “Nightmare“-style vertical spinners!  (See our Viper H.Spin Add-On)

  • The viper 5.5″ titanium blade is a shorter, lighter version of our popular 6-inch weapon blade!
  • Mounts to a 4mm D2822 4mm shaft motor with the Fingertech Blade Mount.
  • Includes a 4-hole screw pattern that can be used instead the of Blade Hub nut or with your own custom hub.
  • Tooth rake and relief angles have been optimized for durability and destruction!

See our Viper kit if you need a robot to mount the weapon to!


2 in stock

SKU: ft-3mm-5-5in-bar Categories: , ,

Product Documents

CAD Files - IGS

Weapon Drawings


Material: Grade 5 (6AL-4V) Titanium

Length: 5.5in (13.97cm) tip-to-tip

Blade Thickness: 0.118in (3.0mm)

Bore: 0.394in (10.0mm)

Screw hole pattern: 0.75-1.0in (19.05-25.4mm) between 6-32 screws (matches FingerTech Blade Hub)

Weight: 1.87oz (53g). This Viper 5.5″ titanium blade is a full 15g less than our 6″ blade.Viper 5.5" titanium blade drawing

We now have three titanium blades in our weapons suite: The large 6″ blade, a smaller, lighter Viper 5.5″ titanium blade, and the asymmetrical vertical spinner blade. Our blades have very high strength-to-weight ratios, and their size gives them a rapid tip speed. That means that they can generate a surprising amount of kinetic energy. We’ve seen these blades literally fling their opponent across the ring.

Weapons choices can be a critical determiner between winning and losing, especially for a less experienced driver. A strong weapons choice like our titaniums can make a major difference in the arena, and give any spectators the exciting match that they deserve.

“I have used this on my 1 lb bot for 3 years now and it has chewed through many tires in that time. Spins fast and hits hard.”

You may also like…