55mm 101a Spitfire Wheels Formula Four Lock Ins

Spitfire Lock Ins Wheels

NOTE: Sold only as a set of four (4) wheels.

Spitfire F4 Lock Ins 101a Skateboard Wheels has an asymmetrical shapemeaning it has a different shape on each side. A flatter side for locking into edges and a chamfered side that won’t catch when sliding so you can lock in your 5-0 grind around the whole bowl. You’ll leave the park happy after a hard session on these bad boys. Spitfire released their new Formula Four wheels a few years ago now. The latest formula was designed for higher abrasion resistance. This means it is a little harder to flat spot. Formula Four 101a wheels are generally decorated with a red themed graphic. Unless of course it is one of the signature wheels. The signature wheels feature artwork custom designed for each rider. 101a is the hardest wheel in the modern skateboarding scene. They are super fast on smooth surfaces and the easiest to slide. Being super hard, if you find they let go on smooth surfaces or feel unpleasant on rougher terrain, switch back to the 99A models. There are no hard and fast rules, best to try out different wheels and select what works best for you.