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Spitfire F4 Lock-Ins 55mm 101a Skateboard Wheels

Spitfire F4 Lock-Ins 55mm 101a Skateboard Wheels
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Spitfire
Type Street/Park/Vert
Diameter (mm) 55
Duro (a) 99
Contact Patch (mm) 23
Lip Profile Round
Surface Smooth
Bearing Core Centerset
Colour White


Spitfire F4 Lock-Ins 55mm 101a Skateboard Wheels are the newest wheel from Spitfire. These asymmetrically shaped wheels give you more control at speed, so you can lock in your 5-0 grind around the whole bowl! Tested by Spitfire Team riders, Formula Four Performance Urethane lasted longer, withstood more abuse and performed superior to all other wheels.

Wheel Size -  The 55mm size will give you consistent speed for faster street skating while also maintaining a solid roll on the flat and better momentum on medium to large transition and ramps. 55mm is really the perfect size if you want to go big but not too big. 

Wheel Shape / Profile: Lock Ins - Looking for the best of both worlds, then the newer shaped Lock Ins are for you. It’s an asymmetrical shape, meaning 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!. For more info read Spitfire Wheel Shapes Explained

Urethane - Formula Four 101a: 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. Usually adorned with a red coloured graphic, the Formula Four 101A wheels are the hardest Spitfire Wheels available. 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. For more info read Spitfire Wheel Formulas Explained