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The Spike-Fly was a custom, made-to-order yo-yo produced by Dif-e-Yo. It is a variation of the Dif-Fly with an extended axle section, in order to accommodate YoYoJam spin top bearing tips on the sides. The bearing tips can be pressed in or pulled out, giving players the option of whether or not to use them.

The effect was to produce a very solid and stable yo-yo/spin top hybrid. Willie shows the potential of the Spike-Fly in the highly entertaining video, Metal Madness. The Spike-Fly can also be equipped with rubber rings on the rims, so that it could also be used for offstring (4A) play, making for a versatile, multi-style yo-yo.

Also released was an all-aluminum variant, the Gladiator, which has spikes machined into the sides of the body.

Spike-Fly (2022)[]

In May 2022, to celebrate the 20th anniversary of the Spike-Fly, Dif-e-Yo released a new version of the yo-yo on their eBay store.

The new Spike-Fly, similar to the original Gladiator, has had its side spikes machined into the sides of the body, which is redesigned with an angular H-shape. As standard fare, the '22 Spike-Fly uses a C-sized KonKave bearing and .555 silicone Dif-Binder response pads. The response pockets are 0.45 inches deep, allowing optional use of flowable silicone response.

The '22 Spike-Fly also comes included with a set of four rubber O-rings, which can be inserted and removed to adjust the yo-yo's weight from 64 grams to 70 grams, in addition to a pair of rubber caps to protect the side spikes. In fact, because of the added width from the side spikes, one of them sticks out of the packaging through a hole in the lead, and is protected with a cap.

See Also[]

  • Dif-e-Yo Gladiator - An all-metal version of the Spike-Fly.
  • P213 - DocPop's hybrid spin top/yo-yo design concept.
  • YoYoJam Triple Jam - A multi-style yo-yo made of plastic, rubber, and Heavy Gravity. Usable for 1A/3A/4A/5A.
  • YoYoSpin Terror Tops - One-piece wooden yo-yos with spin top tips on the sides, produced by Ed Davidson.


  • The use of the bearing tips on the sides of the yo-yo could be seen as an early predecessor of the modern side cap bearings.
  • In some respects, the Spike-Fly resembled Ed Davidson's Terror Tops, especially with the spin top tips on its sides.




Metal Madness video[]


Willie-n-Jamie METAL MADNESS Dif-e-Yo Yo-yo

A YouTube video of Metal Madness uploaded by cornellouis.

External Link[]