Optimized for 23 mm tires, the Black Inc SIXTY Tubular Track wheelset offers exceptional power transfer while remaining agile and quick to accelerate. A performance-oriented tubular wheelset, the SIXTY Track are ideal for hard training sessions or as a gateway wheel to track racing. Designed to excel in sprint and bunch racing bikes, the SIXTY Tubular Track Wheels focus on quick handling and extreme stiffness. The carbon rim is made using our strongest possible layup, capable of dealing with the massive amount of torque that the strongest track riders produce. The 20-spoke front and 24-spoke rear wheels use Pillar Wing 22 bladed and butted steel spokes, which are 30% stronger than traditional lightweight 2.0-1.5spokes in order to enhance the wheels’ lateral, vertical, and torsional strength. The high flange j-bend hub shell combines very large flanges for larger spoke and flange bracing angles along with durable brass nipples to enhance the overall strength and durability of the wheelset. The SIXTY Tubular Track wheels fit a standard track 100 mm x 12mm Thru-Axle front and a 120 mm threaded bolt rear hub. Optimized for 23 mm tires, the beautifully finished carbon rim enhances the look of any track racing setup. Specifications: Weights: Front 720g / Rear 795gSpokes: Pillar Wing 22 J-bend BlackSpoke Pattern: Front Radial / Rear 2x/2xNipples: Pillar External Brass DSN 16 mm typeHubs Front & Rear: HU-17 Alloy BodyHub Width: Front 100mm / Rear 120mmAxle Type: Front 12mm Thru Axle (100mm x M10 Bolt Kit Available) / Rear 120mm x M10 boltBearings: Stainless SteelMaterial: High Modulus Carbon Fiber (T-800/ T-1000)Finish: UD glossy clearcoatType Interface: TubularRecommended Tire Size: 700c x 23mmRim Height: 60mmRim Width: (External) Front 28mm / Rear 28mmDecals: Water Transfer Decals with High Polish Glossy Clear Coat FinishAssembly: The SIXTY Track wheels are hand built by artisanal wheel builders and inspected with the latest electronic machines. This process guarantees that every single wheel's quality, performance and reliability.