Formula Four's proven construction ensures these wheels withstand intense riding while maintaining their quality ride session after session

Whether you’re hitting ledges or cruising streets

Supportive & Fast

Cyborg's 8

38″ NOSE

BLACKRIVER FINGERBOARD - IRONRAIL SQUARE Category_Knee Gaskets Formula Four's proven construction ensuresBuilt for consistent performance and endless grind combinations, the Blackriver Ironrail Square is a fingerboarding essential. Crafted from durable iron with a classic silver finish, this square rail offers a stable grinding surface and features non slip feet for extra grip. Perfect for mastering technical tricks and enhancing any fingerboard park setup. Fingerboard rail Made out of iron Classic flat rail with none sliders Length: 9. 84 in Width: 2.