Spitfire F4 Wheels Classic Swirl | 99D/56mm

Spitfire F4 Wheels Classic Swirl | 99D/56mm

A 56mm Formula Four Classic for skaters who want speed without giving up grip.

This Classic Swirl pairs a 56mm diameter with the 99D Formula Four duro. It's a strong pick for park and transition skaters who want a bigger wheel that still bites a little when they set up a carve or grind.

Formula Four resists flat spots and wears evenly, so the wheel keeps rolling true session after session. The Classic shape has a medium-width riding surface with round sidewalls, giving you a stable roll in the bowl and a predictable slide on coping.

Key Features

• Classic shape: medium-width riding surface with round sidewalls for control in every situation
• Formula Four urethane: Spitfire's performance formula for flat-spot resistance and an anti-stick slide
• 99D hardness: hard street and park duro with a predictable slide
• 56mm diameter: bigger roll for park and transition
• Set of four: enough for one board

Specs

• Diameter: 56mm
• Durometer: 99D (Spitfire scale)
• Width: 35.3mm
• Contact patch (riding surface): 17.8mm
• Shape/profile: Classic: Spitfire's number one shape: a medium-width riding surface with round sidewalls
• Formula/urethane: Spitfire Formula Four
• Best for: Park, bowls, transition, rougher street
• Bearings: Not included (fits standard 608 bearings)
• Sold as: Set of 4

About Spitfire

Spitfire Wheels started in San Francisco in 1987 and is still based there today, distributed through Deluxe alongside some of the city's best-known skate brands. The flame logo has been on the bottom of street, park and bowl setups ever since.

Today Spitfire is best known for Formula Four, its performance urethane built to resist flat spots, hold its shape and slide smoothly without sticking. It comes in a wide spread of shapes and hardnesses, from soft 80HD cruisers to hard 101D park wheels, so you can match the wheel to how and where you skate. Riders choose Spitfire because the wheels are consistent from set to set and simply last.

FAQs

What are the Spitfire F4 Classic Swirl 99D 56mm wheels best for?
Park and transition, plus street skating where you want more roll over rough ground. The Classic is Spitfire's most popular shape: a medium-width riding surface with round sidewalls. It's predictable and easy to control, so it works for street, park and transition alike.

What does 99D mean?
Spitfire rates hardness on its own Duro scale, written D or DU, and doesn't publish a conversion. Retailers generally list it on the A scale, so 99D is usually listed as 99A, a hard street and park wheel. It rolls fast on smooth concrete, grips well enough to set up tricks and slides predictably. On rough footpaths you'll feel more of the cracks than on a softer wheel.

What size wheel should I get, and do I need risers?
56mm is a bigger wheel for parks, bowls and transition, or for rougher streets where you want more roll. On most standard and mid trucks you can run them without risers; on low trucks or with soft bushings, add a 1/8" riser to avoid wheel bite.

Do they come with bearings?
No. They come as a set of four wheels without bearings. Any standard 608 skate bearing fits, so you'll need a set of eight bearings, and spacers if your bearings don't have them built in.

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Burn Four Ever. Spitfire, San Francisco since 1987.