Spitfire Skateboard Wheels 56mm F4 99A Radial Formula Four
by
Spitfire
SKU: SOO986
Description
Spitfire Formula Four 99A Radial Wheels 56mm put Formula Four 99A urethane into the Radial shape, a round-edge, medium-width riding surface that offers the versatility of the Classic shape in the width of a Conical. Formula Four 99A is made for speed and lasting control on all surfaces, and it's one of Spitfire's most ridden duros worldwide.
At 56mm x 35mm, with a 21.5mm 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 versatile, all-around riding
- Park and transition skaters
- Skaters who want Spitfire's most ridden duro
- Spitfire fans
Features
- Formula Four 99A urethane
- Formula Four urethane: unmatched flatspot resistance and smooth anti-stick slide, per Spitfire
- Radial shape
- 56mm diameter, 35mm wide, 21.5mm riding surface
- Set of 4
Benefits
- Speed and lasting control on all surfaces
- Versatile, all-around riding
- This size adds a little speed and roll for park and transition
Specs
| Brand | Spitfire |
| Formula | Formula Four |
| Durometer | 99A |
| Shape | Radial |
| Diameter | 56mm |
| Width | 35mm |
| Riding Surface | 21.5mm |
| Includes | Set of 4 wheels |
Compare Formula Four 99A Radial Sizes
Every size in this line uses the same formula and shape.
| Size | Width | Riding Surface |
|---|---|---|
| 52mm | 32.5mm | 19mm |
| 53mm | 33.3mm | 19.5mm |
| 54mm | 34mm | 20.5mm |
| 56mm (this page) | 35mm | 21.5mm |
Radial in Other Durometers
The same Radial shape in a different formula or durometer, in this size or the closest one available.
| Wheel | Formula | Durometer | Size | Width |
|---|---|---|---|---|
| Sapphire 90A Radial Wheels 56mm | Sapphire | 90A (101A core) | 56mm | 35mm |
| Formula Four 93A Radial Wheels 56mm | Formula Four | 93A | 56mm | 35mm |
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 99A hard or soft?
Hard. 99A is the standard street and park hardness: fast, with a controllable slide.
What is the Radial shape good for?
Versatile, all-around riding. Spitfire describes it as a round-edge, medium-width riding surface that offers the versatility of the Classic shape in the width of a Conical.
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.
Description
Spitfire Formula Four 99A Radial Wheels 56mm put Formula Four 99A urethane into the Radial shape, a round-edge, medium-width riding surface that offers the versatility of the Classic shape in the width of a Conical. Formula Four 99A is made for speed and lasting control on all surfaces, and it's one of Spitfire's most ridden duros worldwide.
At 56mm x 35mm, with a 21.5mm 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 versatile, all-around riding
- Park and transition skaters
- Skaters who want Spitfire's most ridden duro
- Spitfire fans
Features
- Formula Four 99A urethane
- Formula Four urethane: unmatched flatspot resistance and smooth anti-stick slide, per Spitfire
- Radial shape
- 56mm diameter, 35mm wide, 21.5mm riding surface
- Set of 4
Benefits
- Speed and lasting control on all surfaces
- Versatile, all-around riding
- This size adds a little speed and roll for park and transition
Specs
| Brand | Spitfire |
| Formula | Formula Four |
| Durometer | 99A |
| Shape | Radial |
| Diameter | 56mm |
| Width | 35mm |
| Riding Surface | 21.5mm |
| Includes | Set of 4 wheels |
Compare Formula Four 99A Radial Sizes
Every size in this line uses the same formula and shape.
| Size | Width | Riding Surface |
|---|---|---|
| 52mm | 32.5mm | 19mm |
| 53mm | 33.3mm | 19.5mm |
| 54mm | 34mm | 20.5mm |
| 56mm (this page) | 35mm | 21.5mm |
Radial in Other Durometers
The same Radial shape in a different formula or durometer, in this size or the closest one available.
| Wheel | Formula | Durometer | Size | Width |
|---|---|---|---|---|
| Sapphire 90A Radial Wheels 56mm | Sapphire | 90A (101A core) | 56mm | 35mm |
| Formula Four 93A Radial Wheels 56mm | Formula Four | 93A | 56mm | 35mm |
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 99A hard or soft?
Hard. 99A is the standard street and park hardness: fast, with a controllable slide.
What is the Radial shape good for?
Versatile, all-around riding. Spitfire describes it as a round-edge, medium-width riding surface that offers the versatility of the Classic shape in the width of a Conical.
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.