FSA

KFX i28 Boost Wheelset - 29in

What Our Gearhead® Experts Are Saying:

"I got to ride the KFX i28 on a mix of technical XC trails and long climbs, and they blew me away. The PRS hub engagement is fast and reliable, and the carbon rim balance of stiffness and compliance takes the sting out of chatter without feeling vague in corners. They’re light but still confidence-inspiring when things get rowdy."

When our goal is to shave seconds off lap times and still have wheels we can trust on demanding courses, the FSA KFX i28 carbon wheelset delivers. Developed with input from elite racers and already proven at competition level, this wheelset is built for the intensity of XC, XCO, and marathon racing. The variable height carbon rim design provides vertical compliance to take the edge off rough terrain while retaining the lateral stiffness needed to hammer climbs and power through corners.

Tubeless-ready hookless rims with a 28mm internal width pair well with modern XC tires, giving us secure fit and enhanced traction. At the hubs, FSA’s PRS system ensures lightning-fast engagement so power transfers immediately when we stomp on the pedals. With 2 front and 5 rear sealed cartridge bearings and alloy hubs laced with direct pull spokes, every detail is engineered for smooth performance and durability. Artisan-built by hand, these wheels balance lightweight efficiency—just 1566g per pair—with the strength to handle the toughest race days.