Bones Wheels X-Formula | Joslin "Slice of Life" 54mm V1 Standard

The Bones X-Formula is widely regarded as the "greatest of all time" in urethane technology, and this Chris Joslin "Slice of Life" pro edition is built to handle the high-impact skating Joslin is known for.

Featuring the revolutionary X99 durometer, these wheels provide the speed and slide of a hard wheel while absorbing vibration like a softer wheel. The V1 Standard shape is the most versatile profile in the Bones lineup—engineered with a classic sidecut for all-around street and park performance.

Product Specifications

• Pro Model: Chris Joslin "Slice of Life"

• Diameter: 54mm

• Width: 32mm

• Hardness: 99A (X-Formula)

• Shape: V1 Standard

• Quantity: Set of 4 Wheels

• Color: Natural / Pro Graphic

Key Technical Features

• X-Formula Technology: A high-rebound urethane that rolls faster on rough surfaces because it "absorbs" cracks rather than bouncing off them, significantly reducing leg fatigue.

• High Performance Slide: Despite the 99A rating, X-Formula slides exactly like a 101A wheel—predictable, consistent, and easy to break into a blunt or power slide.

• V1 Standard Shape: The classic street shape. It features a balanced width and sidecut that works perfectly for tech ledge skating, transition, and everything in between.

• Extreme Flat-Spot Resistance: Built to survive the harshest slides and heaviest landings without flat-spotting, making these some of the longest-lasting wheels on the market.