Factor SARANA Rigid Fork Complete

Factor SARANA – Where Speed Meets Distance

Purpose-Built for Performance

The Factor SARANA is an ultra-distance gravel race bike, built for self-supported events spanning days rather than hours. Developed in collaboration with 2025 Unbound XL champion Rob Britton, it combines road-level efficiency with off-road resilience, engineered specifically for sustained high-speed riding across variable terrain and for stability and control late into a fatigued, multi-day effort.

Ready for the Roughest Ground

Massive 57mm (29 x 2.2-inch) tyre clearance means the SARANA can run anything from fast gravel slicks to aggressive off-road tread without compromise. The standard rigid fork keeps the frameset at its lightest and most road-efficient for riders who want maximum speed on mixed gravel. A T47 Wide bottom bracket and a leaf-spring seat-stay system cut vibration by 18%, taking the edge off washboard and chatter over a full day in the saddle, while the 30.9mm dropper-compatible seatpost keeps descents controlled when the terrain turns technical.

Designed Around Real Racers

Every build pairs the frame with the Black Inc HB05 integrated barstem and Black Inc FORTY SIX wheelset (46mm depth, 27mm internal width) for a cockpit and wheel package built to hold pace for days, not hours. It's a bike built around the demands of ultra-distance racing: efficient enough to hold a fast average, resilient enough to still be doing so twenty hours in.

Key Features:

• Massive 57mm max tyre clearance (29 x 2.2-inch)
• Leaf-spring seat-stay system — 18% vibration reduction
• Rigid fork for maximum road-level efficiency
• T47 Wide bottom bracket
• 30.9mm dropper-post-compatible seatpost
• Black Inc HB05 integrated barstem and Black Inc FORTY SIX wheelset
• Developed with 2025 Unbound XL champion Rob Britton

Whether it's a self-supported multi-day crossing or a one-day ultra race, the Factor SARANA rigid fork build is built to hold speed over distance most gravel bikes were never designed to survive.

Specs

Geometry