Fulcrum Speed 25+ Carbon Disc Brake Wheelset

Fulcrum Speed 25+ Carbon Disc Brake Wheelset

• Ultra-light carbon road wheelset – just 1270g per pair.

• Fulcrum’s lightest low-profile disc brake wheels.

• 26mm rim depth for maximum climbing efficiency and stability.

• Premium FF100 full carbon rims.

• 2-Way Fit™ – tubeless and clincher compatible.

• CULT ceramic bearings for minimal friction and maximum speed.

• ASTM 1 certified with 120kg system weight limit.

The Fulcrum Speed 25+ Disc Brake Wheelset brings the “Plus” performance philosophy to the road, redefining what’s possible for lightweight disc brake wheels. Weighing just 1270g per pair, these are the lightest low-profile disc wheels Fulcrum has ever produced.

Inspired by the legendary Racing Light XLR, the Speed 25+ is built for steep alpine climbs, long-distance riding and ultimate ride precision, delivering exceptional handling, responsiveness and confidence without compromising durability.

Climbing & Endurance Excellence

With a 26mm rim height, the Speed 25+ delivers exceptional responsiveness on climbs and precise control on descents. The low-profile design ensures predictable handling in all conditions, making it ideal for long alpine rides, endurance events and technical routes.

The 21mm internal rim width supports modern wider tyres, improving rolling resistance, comfort and grip while maintaining a lightweight, race-ready feel.

Advanced Carbon & Tubeless Design

The FF100 carbon rims feature Fulcrum’s 2-Way Fit™ system, allowing riders to run tubeless tyres for reduced rolling resistance and improved puncture protection or standard clinchers for classic simplicity. The optimised rim profile enhances tyre stability and ensures a secure fit at a wide range of pressures.

Precision Hubs & CULT Bearings

At the heart of the Speed 25+ are Fulcrum’s premium CULT ceramic bearings, renowned for their near-frictionless performance and long service life. Combined with an adjustable cup-and-cone system, they deliver exceptional smoothness and efficiency.

The Centre Lock disc interface ensures powerful, consistent braking in all conditions.

Technical Specifications:

• Wheel size: 700c

• Discipline: Road

• Weight (pair): 1270g

• Rim material: Full carbon (FF100)

• Rim height: 26mm

• External rim width: 27.6mm

• Internal rim width: 21mm

• Recommended tyre width: 25–64mm

• Tyre compatibility: 2-Way Fit (Tubeless & Clincher)

• Spokes: 24 front / 24 rear

• Spoke material: Stainless steel, double-butted

• Spoke profile: Aero, straight pull

• Nipples: Aluminium

• Brake type: Disc brake

• Disc interface: Centre Lock

• Hub material: Aluminium

• Bearings: CULT ceramic, adjustable cup & cone

• Freehub options: Shimano HG or SRAM XDR

• Front: 12x100mm

• Rear: 12x142mm

• Maximum system weight: 120kg (rider, bike & equipment)

Compatibility & Fit

• Shimano HG: Shimano Road 9, 10, 11 & 12-speed and SRAM splined 9, 10 & 11-speed cassettes

• SRAM XDR: SRAM 11, 12 & 13-speed XDR cassettes only

• Compatible with 12mm thru-axle road frames and forks

• Centre Lock interface for compatibility with Centre Lock disc brake rotors