Spitfire 53mm Formula 4 Lock-In 99a wheels are asymmetrical wheels designed for greater control. A tapered cut on one side and a straight cut on the other have been designed for precise locking grinds.
Formula 4 Urethane from Spirtfire: Higher rebound for faster speeds on smooth and rough surfaces with a hard durometer for a smoother, faster ride that won't crumble over time. More speed and control on all surfaces; unsurpassed resistance to flatspots!
height: 55 mm
contact surface: 23 mm
width: 33.5 mm
durometer: 99A
Spitfire Formula Four urethane formula
asymmetrical shape
straight edge on the inside, tapered cutting profile on the outside
better locking when grinding on edges and rails
more control, lasting speed
high abrasion and crush resistance
non-stick glide for consistent, fast, smooth slides
| Color | Blue |
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