Spitfire Formula Four 101A Classics Wheels 55mm are Formula Four 101A wheels in the Classic shape, built for all-around control. Formula Four 101A is Spitfire's hardest duro, built on proven Formula Four performance for a harder, faster ride and extra speed.

At 55mm x 34.6mm, with a 17.3mm riding surface, this size adds a little speed and roll for park and transition. Sold as a set of 4.

Who These Wheels Are For

• Skaters who want all-around control
• Park and transition skaters
• Skaters on smooth spots who want max speed
• Spitfire fans

Features

• Formula Four 101A urethane
• Formula Four urethane: unmatched flatspot resistance and smooth anti-stick slide, per Spitfire
• Classic shape
• 55mm diameter, 34.6mm wide, 17.3mm riding surface
• Set of 4

Benefits

• Maximum speed on smooth surfaces
• All-around control
• This size adds a little speed and roll for park and transition

Specs

Compare Formula Four 101A Classic Sizes

Every size in this line uses the same formula and shape.

Classics in Other Durometers

The same Classics shape in a different formula or durometer, in this size or the closest one available.

Complete Your Setup

New wheels deserve fresh bearings. Spitfire makes three tiers:

• Spitfire Cheapshots Bearings (Good): Spitfire's base-level bearing, tested by the pro team, with removable black shields to keep the crud out.
• Spitfire Classics Bearings (Better): Superfast and durable, with heat-resistant chromium steel rings, removable nylon cages, and blue removable shields.
• Spitfire Burners Bearings (Best): Spitfire's high-performance pick, with polished honed races and high carbon chromium steel, packed in a reusable tin.

FAQ

Is 101A hard or soft?

Hard. 101A is Spitfire's hardest duro, for extra speed on smooth surfaces.

What is the Classic shape good for?

All-around control. Spitfire describes it as the number one wheel shape in skateboarding: a medium-width riding surface with round sidewalls, designed for control in all situations.

What size wheels should I get?

Smaller wheels (50 to 52mm) are light and technical, 53 to 54mm is the street and park go-to, and 55mm and up adds speed for transition and rough ground. See our skateboard wheels guide for more.