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Spitfire F4 Conical Full 55mm Allen Black 99a Skateboard Wheels

Spitfire F4 Conical Full 55mm Allen Black 99a Skateboard Wheels
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Spitfire
Type Street/Park/Vert
Diameter (mm) 55
Duro (a) 99
Contact Patch (mm) 22
Lip Profile Conical
Surface Smooth
Bearing Core Centerset
Colour Black


Spitfire F4 Conical Full 55mm 99a Allen Black Skateboard Wheels, the prime urethane formula wheel by Spitfire. 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: Conical Full - Conical refers to the cone shape produced by using flatter surfaces from the contact patch to the side of the wheel. Double Conical wheels were a popular shape in the late 1970’s. It either referred to a conical shape being used on the corner & from the wheel side to the bearing seat or a conical profile on both sides of the wheel. In recent years this shape has been modified to suit smaller hard wheels. It provides a nice shaped corner for slides, flatter wheel sides to lock into edges and wider contact patch. The Conical Full is around 2 to 3mm wider than it’s straight conical partner if you are looking for a little more grip and slide control over speed.For more info read Spitfire Wheel Shapes Explained

Urethane - Formula Four 99A: 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.. For more info read Spitfire Wheel Formulas Explained

Bearing core -  Center-Set so you can reverse the wheel to save the graphic and help get longer life out of your wheels as you can rotated them so they burn down evenly.