SPITFIRE WHEELS - FORMULA FOUR 99A "TEAM CONICAL FULL" (54MM BLACK)

Lock in maximum control, wide-platform stability, and unmatched flat-spot resistance with the Spitfire F4 99A Team Conical Full Wheels. As the undisputed industry benchmark for high-performance urethane, Spitfire’s Formula Four line is scientifically engineered to endure the absolute heaviest street abuse and concrete transition sessions without losing its shape. This edition features a clean, solid Black urethane colorway, giving your setup a sleek, stealthy aesthetic on the deck wall and in the streets while keeping your rolling speed uncompromised.

Poured in a highly versatile 54mm diameter and Spitfire's universal 99A durometer, these wheels deliver the perfect crossover sizing for modern street skating, deep concrete bowls, and locked-in grinding traction.

TECHNICAL SPECIFICATIONS & DETAILS

• Brand: Spitfire Wheels

• Urethane Compound: Formula Four (F4) Premium Urethane

• Durometer (Hardness): 99A

• Shape Profile: Conical Full Shape

• Wheel Diameter: 54mm

• Riding Surface Width: 21.5mm

• Total Wheel Width: 34.0mm

• Colorway: Black

• Manufacturer Item Number: 21110012B54

FORMULA FOUR METALLURGY & CONICAL FULL SHAPE ARCHITECTURE

Every structural parameter of the Conical Full shape 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 massive 21.5mm 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...