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55mm 99a Spitfire Wheels Formula Four Lock Ins Full Red

Regular price $74.95

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Spitfire Lock Ins Full Wheels

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

Diameter 55mm
Hardness 99a
Width 39.2mm
Riding Surface
Core No
Formula Formula Four


Spitfire F4 Lock Ins Full 99a 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 99a wheels are generally decorated with a blue themed graphic. Unless of course it is one of the signature wheels. The signature wheels feature artwork custom designed for each rider. 99A is considered a softer wheel in the modern skateboarding scene. They are still very hard. The 99A formula will provide a little more grip on super smooth surfaces and is a little more forgiving to ride on rougher surfaces. There are no hard and fast rules, best to try out different wheels and select what works best for you.