Stinner Tunnel Podium Frame

Tunnel isn’t just a ride — it’s a challenge carved into the mountains above Santa Barbara. Rutted, raw, and relentlessly steep, it’s a trail that demands skill, commitment, and a bike built to deliver. It’s the kind of place that forges better riders — and better bikes. That ethos inspires the Stinner Tunnel line. Whether you’re just beginning your journey with the Select Series or pushing your performance with the Podium, these bikes are built with the same spirit: capable, purpose-driven, and ready for whatever lies ahead. Where it all begins. Where limits are tested.

Frameset Technical Specifications //

FRAME //

Material // Stinner Podium Titanium Tubeset - Straight Gauge

Finish // Bead Blasted Raw Ti

Dropouts // UDH Titanium Dropouts

Drivetrain Compatibility // SRAM AXS Eagle Transmission/Full Mount compatible

MAX Tire Clearance // 29 x 2.5"

MAX Chainring Clearance // 1x: 34t (55mm chainline)

Dropout Spacing // Boost 148 x 12mm

Rear Axle // 173mm - M12 x 1.0 - 15mm threaded portion

Brake Mount // Post Mount 160mm

MAX Rotor Size // 180mm

Brake Routing // Internal through frame - Hose enters the downtube just behind the headtube

Seatpost Diameter //  31.6mm - Wireless Dropper Compatible

Seatpost maximum insertion // Med: 205mm // M/L: 225mm // Large: 245mm // XL: 265mm

Seatpost Clamp Diameter // 34.9mm

Bottom Bracket // T47 73mm wide shell

Headtube Diameter // 44mm Internal Top and Bottom

Headset Specs // Upper: ZS44/28.6 - Lower: EC44/40 (1.5 Tapered Steerer)

Mounts // 2 bottle cage mounts in front triangle - triple mount under down tube

FORK //

The Tunnel is designed around a 140mm travel suspension fork with a 551mm axle to crown measurement.