Spitfire Formula Four 97A Una Farrar Trinity Conical Full Wheels 52mm Natural are Formula Four 97A wheels in the Conical Full shape, built for stability and locking into grinds. Formula Four 97A is formulated for a softer, faster ride, designed for every spot. It grips or slides when you need it.

At 52mm x 32.5mm, with a 21mm riding surface, smaller diameters like this sit low and light for technical street skating. It's Una Farrar's pro model. Sold as a set of 4.

Who These Wheels Are For

• Skaters who want stability and locking into grinds
• Technical street skaters
• Skaters who split time between street, park, and rough spots
• Una Farrar fans

Features

• Formula Four 97A urethane
• Formula Four urethane: unmatched flatspot resistance and smooth anti-stick slide, per Spitfire
• Conical Full shape
• 52mm diameter, 32.5mm wide, 21mm riding surface
• Set of 4

Benefits

• Softer, faster ride that grips or slides
• Stability and locking into grinds
• Smaller diameters like this sit low and light for technical street skating

Specs

Compare Formula Four 97A Conical Full Sizes

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

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 97A hard or soft?

In between. 97A is softer and faster on rough spots, while still gripping or sliding when you need it.

What is the Conical Full shape good for?

Stability and locking into grinds. Spitfire describes it as a wider version of the Conical shape, with a wide riding surface and cut-in sidewalls to decrease weight: a solid, controllable shape for all terrain.

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.