SPITFIRE WHEELS - FORMULA FOUR 99A FABIANA DELFINO "INVASION" CONICAL FULL (53MM & 54MM)

Lock in maximum control, wide-platform stability, and unmatched flat-spot resistance with the Spitfire F4 99A Fabiana Delfino Invasion Conical Full Wheels. As the undisputed industry benchmark for high-performance urethane, Spitfire’s Formula Four line is scientifically engineered to endure the heaviest street abuse and concrete transition sessions without losing its shape. Built as a signature pro edition for powerhouse all-terrain technician Fabiana Delfino, the "Invasion" series features custom alternative illustrative branding against raw natural urethane, giving your setup a sharp, independent look while you handle business.

Available in both 53mm and 54mm diameters and poured in Spitfire's universal 99A durometer, these wheels deliver the definitive modern sweet spot for technical street execution and locked-in grinding traction.

Technical Specifications & Variant Details

• Brand: Spitfire Wheels

• Pro Model: Fabiana Delfino

• Graphic Variant: Invasion

• Urethane Compound: Formula Four (F4) Premium Urethane

• Durometer (Hardness): 99A

• Shape Profile: Conical Full Shape

• Colorway: Natural Urethane

Size-Specific Dimensions:

• 53mm Variant:

  • Riding Surface: 21.0mm | Total Width: 33.5mm | Manufacturer Item Number: 21110404FA53

• 54mm Variant:

  • Riding Surface: 21.5mm | Total Width: 34.0mm | Manufacturer Item Number: 21110404FA54

Formula Four Metallurgy & Conical Full Shape Architecture

Every structural parameter of Fabiana Delfino's pro-model wheel is calculated to maximize roll velocity, prevent slide slip-outs, and provide an uncompromised lock-in on coping and rails:

• Unmatched 99A Formula Four Compound: Formulated from 100% pure polyurethane to resist flat-spots better than any other wheel on the market. The 99A durometer delivers blazing speed on smooth park concrete, while offering just enough forgiveness to absorb rugged street crust and maintain predictable traction.

• The Wide Conical Full Shape Profile: Designed with a wide riding surface and sharp, hand-cut squared shoulders. This wide-profile footprint distributes weight evenly for rock-solid stability at high speeds, while the flat outer walls make it effortless to lock deeply and securely into grinds without slipping out prematurely.

• True-Centric Speed Performance: Precision poured to ensure absolute balance. Formula Four urethane retains more of its original sizing and structural shape over months of heavy skating, meaning your setup rolls faster, slides further, and responds predictably during technical lines.

Sizing Guide: 53mm vs. 54mm Selection

• Select the 53mm Profile if you focus primarily on technical street skating, ledge lines, and flip tricks. It offers rapid acceleration, less total weight, and extra clearance to minimize wheelbite on low-profile trucks.

• Select the 54mm Profile if you want an all-terrain daily driver that splits time between rugged street plazas, concrete bowls, and transition ramps. It carries excellent rolling momentum and handles rough terrain with ease.

Product Summary

The Spitfire F4 99 Fabiana Delfino Invasion Conical Full Wheels are the premier choice for technical street purists, ledge technicians, and park skaters who refuse to compromise on stability. By matching the elite Formula Four flat-spot resistant urethane with a wide Conical Full shape profile and a custom pro concept, Spitfire delivers a wheel built to roll faster, lock into grinds tighter, and last significantly longer. They are an essential upgrade for anyone looking to maintain maximum control and back authentic independent skate progression.

Keywords: Spitfire Wheels, Formula Four, Spitfire F4, 99A Durometer, Fabiana Delfino, Invasion, Conical Full, 53mm Wheels, 54mm Wheels, Skateboard Wheels, Spitfire Columbus.