FSA KFX i25 Boost Wheelset - 29in

Lightweight and durable KFX I25 Boost 29" Wheelset with carbon construction and precision performance

What Our Gearhead® Experts Are Saying:

"The KFX I25 Boost 29" Wheelset is all about lightweight strength and efficiency. The asymmetric carbon rims optimize spoke tension, while the 25mm internal width is ideal for XC and trail tires, balancing speed and grip. The PRS alloy hub’s 72-tooth ratchet system delivers near-instant engagement, making technical climbs and fast accelerations feel effortless. With tubeless compatibility and hand-built precision, this wheelset is ready to push limits on the trail."

Precision, speed, and durability come together in the KFX I25 Boost 29" Wheelset, built for riders who demand top-tier performance. Featuring an asymmetric carbon rim with a hookless, tubeless-ready design, these wheels maximize strength while keeping weight to a minimum.

With a 25mm internal width, this wheelset supports modern XC and trail tires for a perfect balance of rolling efficiency and traction. The PRS alloy hub houses a 72-tooth ratchet system for lightning-fast engagement, ensuring every pedal stroke translates to instant power. Whether tackling technical climbs or hammering down fast descents, the KFX I25 is the perfect blend of efficiency and reliability.

Details

• Ultralight carbon wheelset designed for cross-country and trail riding
• Asymmetric rim design improves spoke tension and durability
• 25mm internal width balances rolling efficiency and traction
• PRS alloy hubs with a 72-tooth ratchet system deliver instant engagement
• 2-cross double-butted spokes with brass nipples enhance strength and compliance
• Hookless, tubeless-ready design allows lower tire pressures for better ride quality
• Hand-built construction ensures precision and long-term durability
• Item #FSAD14T

Tech Specs

Rim Material

carbon

Wheel Size

29in

Rim Type

tubeless ready

Rim Width

[internal] 25mm, [external] 30mm

Brake Compatibility

6-bolt disc

Hubs

Alloy P.R.A.

Front Axle

15 x 110mm Boost

Rear Axle

12 x 148mm Boost

Claimed Weight

[pair] 3lb 7oz (1,560g

Manufacturer Part Number

720-0074181030

Activity

cross-country, trail, enduro